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Yang J, Lu Q, Li Y, Gou L. Filler found in bone: Surgical removal of polyacrylamide hydrogel (Amazingel) from the mandible after 24 years: A case report and literature review. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2024:101962. [PMID: 38972597 DOI: 10.1016/j.jormas.2024.101962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2024] [Revised: 06/22/2024] [Accepted: 07/03/2024] [Indexed: 07/09/2024]
Abstract
Polyacrylamide hydrogel (PAAG) is widely regarded as a safe soft tissue filler and has been extensively utilized for cosmetic enhancements, such as breast and facial augmentation in China from 1997 until its ban in 2006. Common complications associated with its use include inflammation, infection, granulomas, fibrosis, gel migration, and facial and soft tissue deformities. This case report describes a 45-year-old Chinese woman who experienced PAAG migration into her mandible 24 years after facial augmentation, causing irritation of the mandibular alveolar nerve - apparently the first documented instance of this occurrence. Surgical intervention was necessary to remove the migrated gel and associated calcifications. A literature review explored adverse events and management strategies for PAAG complications in cosmetic procedures. While generally considered safe, this report underscores the importance of meticulous injection techniques and careful anatomical site selection to prevent such severe complications.
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Affiliation(s)
- Jun Yang
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, the Stomatological Hospital of Chongqing Medical University, Chongqing, China; Department of Oral and Maxillofacial Surgery, the Stomatological Hospital of Chongqing Medical University, Chongqing, China; Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Qi Lu
- Department of Oral and Maxillofacial Surgery, the Stomatological Hospital of Chongqing Medical University, Chongqing, China
| | - Yong Li
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, the Stomatological Hospital of Chongqing Medical University, Chongqing, China; Department of Oral and Maxillofacial Surgery, the Stomatological Hospital of Chongqing Medical University, Chongqing, China; Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Liming Gou
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, the Stomatological Hospital of Chongqing Medical University, Chongqing, China; Department of Oral and Maxillofacial Surgery, the Stomatological Hospital of Chongqing Medical University, Chongqing, China; Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China.
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2
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Chen T, Wang Y, Zhang Y. Thermal Decomposition Mechanism of P(DAC-AM) with Serial Cationicity and Intrinsic Viscosity. Polymers (Basel) 2024; 16:1522. [PMID: 38891468 PMCID: PMC11174957 DOI: 10.3390/polym16111522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 05/13/2024] [Accepted: 05/20/2024] [Indexed: 06/21/2024] Open
Abstract
The thermal decomposition of the thermodynamic, kinetic and mechanisms of copolymer P(DAC-AM) samples with serial cationicity and intrinsic viscosity ([η]), and the control samples of homopolymer PAM and PDAC, were studied and analyzed using TG, DSC, FTIR. The results of the thermal decomposition thermodynamics confirmed that the thermal decomposition processes of the serial P(DAC-AM) samples and the two control samples could be divided into two stages. It was found that the processes of the copolymer P(DAC-AM) samples were not a simple superposition of those of homopolymers, whose monomers had composed the unit structures of the copolymer, but there were interactions between the two suspension groups. The results of thermal decomposition kinetics showed that the apparent activation energy (E) of the thermal decomposition process of all polymer samples had different varying trends in the terms of weight-loss rate (α). The reaction order (n) of the thermal decomposition of P(DAC-AM) in Stage I and II was close to 1, but in the former and the latter it tended to be 2 and 0.5, respectively. Finally, the thermal decomposition mechanism of copolymer P(DAC-AM) samples was discussed. The above research could not only fill in the knowledge vacancy of the thermal decomposition of the thermodynamic, kinetic and mechanisms of P(DAC-AM), but could also lay a foundation for the study of thermal decomposition mechanisms of the other types of polymers, including cationic polymers.
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Affiliation(s)
- Tingting Chen
- School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, China; (T.C.); (Y.W.)
- Shaanxi Coal Chemical Industry Technology Research Institute Co., Ltd., Xi’an 710100, China
| | - Yongji Wang
- School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, China; (T.C.); (Y.W.)
- School of Chemistry and Material Engineering, Chaohu University, Chaohu 238024, China
| | - Yuejun Zhang
- School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, China; (T.C.); (Y.W.)
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3
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Sharma P, Singh J, Singh B. Evaluation of physiochemical and biomedical properties of psyllium-poly(vinyl phosphonic acid-co-acrylamide)-cl-N,N-methylene bis acrylamide based hydrogels. Int J Biol Macromol 2024; 260:129546. [PMID: 38246461 DOI: 10.1016/j.ijbiomac.2024.129546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 01/07/2024] [Accepted: 01/15/2024] [Indexed: 01/23/2024]
Abstract
Present investigation deals with the synthesis of psyllium based copolymeric hydrogels and evaluation of their physiochemical and biomedical properties. These copolymers have been prepared by grafting of poly(vinyl phosphonic acid) (poly (VPA)) and poly(acrylamide) (poly(AAm)) onto psyllium in the presence of crosslinker N,N-methylene bis acrylamide (NNMBA). These copolymers [psyllium-poly(VPA-co-AAm)-cl-NNMBA] were characterized by field emission-scanning electron micrographs (FE-SEM), electron dispersion X-ray analysis (EDAX), Atomic force microscopy (AFM), Fourier transform infrared spectroscopy (FTIR), 13C-nuclear magnetic resonance (NMR), X-ray diffraction (XRD), and thermogravimetric analysis (TGA)- differential thermal analysis (DTG). FESEM, AFM and XRD demonstrated heterogeneous morphology with a rough surface and an amorphous nature. Diffusion of ornidazole occurred with a non-Fickian diffusion mechanism, and the release profile data was fitted in the Korsemeyer-Peppas kinetic model. Biochemical analysis of hydrogel properties confirmed the blood-compatible nature during blood-polymer interactions and revealed haemolysis value 3.95 ± 0.05 %. The hydrogels exhibited mucoadhesive character during biomembrane-polymer interactions and demonstrated detachment force = 99.0 ± 0.016 mN. During 2,2-diphenyl-1-picrylhydrazyl reagent (DPPH) assay, free radical scavenging was observed 37.83 ± 3.64 % which illustrated antioxidant properties of hydrogels. Physiological and biomedical properties revealed that these hydrogels could be explored for drug delivery uses.
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Affiliation(s)
- Prerna Sharma
- Department of Chemistry, Himachal Pradesh University, Shimla 171005, India
| | - Jasvir Singh
- Department of Chemistry, Himachal Pradesh University, Shimla 171005, India
| | - Baljit Singh
- Department of Chemistry, Himachal Pradesh University, Shimla 171005, India.
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4
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Klaus MVX, Gutierrez AM, Hilt JZ. Development of Poly(acrylamide)-Based Hydrogel Composites with Powdered Activated Carbon for Controlled Sorption of PFOA and PFOS in Aqueous Systems. Polymers (Basel) 2023; 15:4384. [PMID: 38006108 PMCID: PMC10675425 DOI: 10.3390/polym15224384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 11/04/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023] Open
Abstract
Per- and polyfluoroalkyl substances (PFAS) are anthropogenic compounds developed for various applications; some are connected to adverse health impacts including immunosuppression and higher susceptibility to some cancers. Current PFAS remediation treatments from aqueous sources include granular activated carbon (GAC) adsorption, membrane separation, and anion-exchange resin (AER) removal. Each has specific disadvantages, hence the need for a new and efficient technology. Herein, acrylamide-based hydrogel composites were synthesized with powdered activated carbon (PAC) and characterized to determine their affinity for PFAS. Physicochemical characterization included Fourier-Transform infrared spectroscopy (FTIR) to identify chemical composition, thermogravimetric analysis (TGA) to confirm PAC loading percentage, and aqueous swelling studies to measure the effect of crosslinking density. FTIR showed successful conversion of carbonyl and amine groups, and TGA analysis confirmed the presence of PAC within the network. Surface characterization also confirmed carbon-rich areas within composite networks, and the swelling ratio decreased with increasing crosslinking density. Finally, sorption of PFAS was detected via liquid chromatography with tandem mass spectrometry (LC-MS/MS), with removal efficiencies of up to 98% for perfluorooctanoic sulfonic acid (PFOS) and 96% for perfluorooctanoic acid (PFOA). The developed hydrogel composites exhibited great potential as advanced materials with tunable levers that can increase affinity towards specific compounds in water.
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Affiliation(s)
- Maria Victoria X. Klaus
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506, USA; (M.V.X.K.); (A.M.G.)
- Superfund Research Center, University of Kentucky, Lexington, KY 40506, USA
| | - Angela M. Gutierrez
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506, USA; (M.V.X.K.); (A.M.G.)
- Superfund Research Center, University of Kentucky, Lexington, KY 40506, USA
| | - J. Zach Hilt
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506, USA; (M.V.X.K.); (A.M.G.)
- Superfund Research Center, University of Kentucky, Lexington, KY 40506, USA
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5
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Simeonov M, Apostolov AA, Georgieva M, Tzankov D, Vassileva E. Poly(acrylic acid-co-acrylamide)/Polyacrylamide pIPNs/Magnetite Composite Hydrogels: Synthesis and Characterization. Gels 2023; 9:365. [PMID: 37232957 PMCID: PMC10217237 DOI: 10.3390/gels9050365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 04/20/2023] [Accepted: 04/22/2023] [Indexed: 05/27/2023] Open
Abstract
Novel composite hydrogels based on poly(acrylic acid-co-acrylamide)/polyacrylamide pseudo-interpenetrating polymer networks (pIPNs) and magnetite were prepared via in situ precipitation of Fe3+/Fe2+ ions within the hydrogel structure. The magnetite formation was confirmed by X-ray diffraction, and the size of the magnetite crystallites was shown to depend on the hydrogel composition: the crystallinity of the magnetite particles increased in line with PAAM content within the composition of the pIPNs. The Fourier transform infrared spectroscopy revealed an interaction between the hydrogel matrix, via the carboxylic groups of polyacrylic acid, and Fe ions, which strongly influenced the formation of the magnetite articles. The composites' thermal properties, examined using differential scanning calorimetry (DSC), show an increase in the glass transition temperature of the obtained composites, which depends on the PAA/PAAM copolymer ratio in the pIPNs' composition. Moreover, the composite hydrogels exhibit pH and ionic strength responsiveness as well as superparamagnetic properties. The study revealed the potential of pIPNs as matrices for controlled inorganic particle deposition as a viable method for the production of polymer nanocomposites.
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Affiliation(s)
- Marin Simeonov
- Laboratory on Structure and Properties of Polymers, Faculty of Chemistry and Pharmacy, University of Sofia “St. Kliment Ohridski”, 1, James Bourchier blvd., 1164 Sofia, Bulgaria
| | - Anton Atanasov Apostolov
- Laboratory on Structure and Properties of Polymers, Faculty of Chemistry and Pharmacy, University of Sofia “St. Kliment Ohridski”, 1, James Bourchier blvd., 1164 Sofia, Bulgaria
| | - Milena Georgieva
- Faculty of Physics, University of Sofia “St. Kliment Ohridski”, 5, James Bourchier blvd., 1164 Sofia, Bulgaria
| | - Dimitar Tzankov
- Faculty of Physics, University of Sofia “St. Kliment Ohridski”, 5, James Bourchier blvd., 1164 Sofia, Bulgaria
| | - Elena Vassileva
- Laboratory on Structure and Properties of Polymers, Faculty of Chemistry and Pharmacy, University of Sofia “St. Kliment Ohridski”, 1, James Bourchier blvd., 1164 Sofia, Bulgaria
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6
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Lv Y, Zhang S, Zhang Y, Yin H, Feng Y. Hydrophobically Associating Polyacrylamide “Water-in-Water” Emulsion Prepared by Aqueous Dispersion Polymerization: Synthesis, Characterization and Rheological Behavior. Molecules 2023; 28:molecules28062698. [PMID: 36985669 PMCID: PMC10055691 DOI: 10.3390/molecules28062698] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/06/2023] [Accepted: 03/08/2023] [Indexed: 03/19/2023] Open
Abstract
The hydrophobically associating polyacrylamide (HAPAM) is an important kind of water-soluble polymer, which is widely used as a rheology modifier in many fields. However, HAPAM products prepared in a traditional method show disadvantages including poor water solubility and the need for hydrocarbon solvents and appropriate surfactants, which lead to environmental pollution and increased costs. To solve these problems, we reported a novel kind of HAPAM “water-in-water” (w/w) emulsion and its solution properties. In this work, a series of cationic hydrophobic monomers with different alkyl chain lengths were synthesized and characterized. Then, HAPAM w/w emulsions were prepared by the aqueous dispersion polymerization of acrylamide, 2-methylacryloylxyethyl trimethyl ammonium chloride and a hydrophobic monomer. All these emulsions can be stored more than 6 months, showing excellent stability. An optical microscopy observation showed that the particle morphology and the particle size of the HAPAM emulsion were more regular and bigger than the emulsion without the hydrophobic monomer. The solubility tests showed that such HAPAM w/w emulsions have excellent solubility, which took no more than 180 s to dilute and achieve a homogeneous and clear solution. The rheology measurements showed that the HAPAM association increases with a hydrophobe concentration or the length of hydrophobic alkyl chains, resulting in better shear and temperature resistances. The total reduced viscosity was 124.42 mPa·s for cw101, 69.81 mPa·s for cw6-1, 55.38 mPa·s for cw8-0.25, 48.95 mPa·s for cw12-0.25 and 28 mPa·s for cw16-0.25 when the temperature increased from 30 °C to 90 °C. The cw8-2.0 that contains a 2 mol% hydrophobe monomer has the lowest value at 19.12 mPa·s due to the best association. Based on the excellent stability, solubility and rheological properties, we believe that these HAPAM w/w emulsions could find widespread applications.
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Affiliation(s)
- Yongli Lv
- Petroleum Engineering Technology Research Institute of Shengli Oilfield, SINOPEC, Dongying 257000, China
| | - Sheng Zhang
- Shengli Oilfield Shengli Chemicals Co., Ltd., Dongying 257055, China
| | - Yunshan Zhang
- Shengli Oilfield Shengli Chemicals Co., Ltd., Dongying 257055, China
| | - Hongyao Yin
- Polymer Research Institute, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
- Correspondence: (H.Y.); (Y.F.)
| | - Yujun Feng
- Polymer Research Institute, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
- Correspondence: (H.Y.); (Y.F.)
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7
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Scaling-Up an Aqueous Self-Degassing Electrochemically Mediated ATRP in Dispersion for the Preparation of Cellulose-Polymer Composites and Films. Polymers (Basel) 2022; 14:polym14224981. [PMID: 36433108 PMCID: PMC9692721 DOI: 10.3390/polym14224981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/07/2022] [Accepted: 11/15/2022] [Indexed: 11/19/2022] Open
Abstract
Electrochemically mediated atom transfer radical polymerization (eATRP) is developed in dispersion conditions to assist the preparation of cellulose-based films. Self-degassing conditions are achieved by the addition of sodium pyruvate (SP) as a ROS scavenger, while an aluminum counter electrode provides a simplified and more cost-effective electrochemical setup. Different polyacrylamides were grown on a model cellulose substrate which was previously esterified with 2-bromoisobutyrate (-BriB), serving as initiator groups. Small-scale polymerizations (15 mL) provided optimized conditions to pursue the scale-up up to 1000 mL (scale-up factor ~67). Cellulose-poly(N-isopropylacrylamide) was then chosen to prepare the tunable, thermoresponsive, solvent-free, and flexible films through a dissolution/regeneration method. The produced films were characterized by Fourier-transform infrared (FTIR), scanning electron microscopy (SEM), dynamic scanning calorimetry (DSC), and thermogravimetric analysis (TGA).
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8
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Militello MP, Gambetta C, Ramírez ML, Bertolotti SG, Previtali CM, Arbeloa EM. New Dye/Dendrimer Photoinitiating Systems Operating under Visible Radiation: Eco‐Friendly Synthesis of Highly Viscous Polymers. ChemistrySelect 2022. [DOI: 10.1002/slct.202201933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- María Paula Militello
- Departamento de Química FCEFQN Universidad Nacional de Rio Río Cuarto Instituto de Tecnologías Energéticas y Materiales Avanzados (IITEMA-CONICET) Ruta 36 Km 601 5800 Río Cuarto Córdoba Argentina
| | - Carolina Gambetta
- Departamento de Microbiología e Inmunología FCEFQN Universidad Nacional de Río Cuarto Instituto de Investigación en Micología y Micotoxicología (IMICO-CONICET) Ruta 36 Km 601 5800 Río Cuarto Córdoba Argentina
| | - María Laura Ramírez
- Departamento de Microbiología e Inmunología FCEFQN Universidad Nacional de Río Cuarto Instituto de Investigación en Micología y Micotoxicología (IMICO-CONICET) Ruta 36 Km 601 5800 Río Cuarto Córdoba Argentina
| | - Sonia Graciela Bertolotti
- Departamento de Química FCEFQN Universidad Nacional de Rio Río Cuarto Instituto de Tecnologías Energéticas y Materiales Avanzados (IITEMA-CONICET) Ruta 36 Km 601 5800 Río Cuarto Córdoba Argentina
| | - Carlos Mario Previtali
- Departamento de Química FCEFQN Universidad Nacional de Rio Río Cuarto Instituto de Tecnologías Energéticas y Materiales Avanzados (IITEMA-CONICET) Ruta 36 Km 601 5800 Río Cuarto Córdoba Argentina
| | - Ernesto Maximiliano Arbeloa
- Departamento de Química FCEFQN Universidad Nacional de Rio Río Cuarto Instituto de Tecnologías Energéticas y Materiales Avanzados (IITEMA-CONICET) Ruta 36 Km 601 5800 Río Cuarto Córdoba Argentina
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9
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Optimizing the Conditions of Cationic Polyacrylamide Inverse Emulsion Synthesis Reaction to Obtain High–Molecular–Weight Polymers. Polymers (Basel) 2022; 14:polym14142866. [PMID: 35890642 PMCID: PMC9316886 DOI: 10.3390/polym14142866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 07/09/2022] [Accepted: 07/11/2022] [Indexed: 02/01/2023] Open
Abstract
Cationic polyacrylamide (CPAM) emulsifier is widely applied in the wastewater treatment industry, mining industry, paper industry, cosmetic chemistry, etc. However, optimization of input parameters in the synthesis of CPAM by using the traditional approach (i.e., changing one factor while leaving the others fixed at a particular set of conditions) would require a long time and a high cost of input materials. Onsite mass production of CPAM requires fast optimization of input parameters (i.e., stirring speed, reaction temperature and time, the amount of initiator, etc.) to minimize the production cost of specific–molecular–weight CPAM. Therefore, in this study, we synthesized CPAM using reverse emulsion copolymerization, and proposed response surface models for predicting the average molecular weight and reaction yield based on those input parameters. This study offers a time–saving tool for onsite mass production of specific–molecular–weight CPAM. Based on our response surface models, we obtained the optimal conditions for the synthesis of CPAM emulsions, which yielded medium–molecular–weight polymers and high conversion, with a reaction temperature of 60–62 °C, stirring speed of 2500–2600 rpm, and reaction time of 7 h. Quadratic models showed a good fit for predicting molecular weight (Adj.R2 = 0.9888, coefficient of variation = 2.08%) and reaction yield (Adj.R2 = 0.9982, coefficient of variation = 0.50%). The models suggested by our study would benefit the cost–minimization of CPAM mass production, where one could find optimal conditions for synthesizing different molecular weights of CPAM more quickly than via the traditional approach.
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10
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Zhang X, Han M, Xu L, AlSofi AM. Long-term stability prediction of polyacrylamide-type polymers at harsh conditions via thermogravimetric analysis. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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11
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Calvillo-Muñoz EY, Vega-Paz A, Guzman-Lucero D, Lijanova IV, Olivares-Xometl O, Likhanova NV. Synthesis of water-soluble ionic terpolymers by inverse microemulsion and solution polymerization methods. RSC Adv 2022; 12:12273-12282. [PMID: 35480365 PMCID: PMC9036531 DOI: 10.1039/d2ra01173e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 04/13/2022] [Indexed: 11/30/2022] Open
Abstract
The synthesis of terpolymers can lead to very interesting combinations of monomers, which can affect the solubility of the polymer, its thermal stability or resistance in saline aqueous media. Free-radical inverse microemulsion and solution polymerization techniques were used to prepare water-soluble acrylamide-N-vinylpyrrolidone-(vinylbenzyl)trimethylammonium chloride terpolymers. The formulation of the polymerizable microemulsion was optimized by using the screening of surfactant percentage and HLB concept. The influence of synthesis temperature on the terpolymer composition and molecular weight was investigated. The reactions were carried out at 60, 70, and 75 °C for the microemulsion technique and at 40, 50, and 55 °C for the solution polymerization technique. The reaction products from both processes were water-soluble polymers, and the two techniques reached high conversions and molecular masses. Maximal molecular weights were displayed by terpolymers prepared by the solution method at 40 °C (959, 840 g mol−1) and the inverse microemulsion method at 60 °C (795, 994 g mol−1). According to NMR analysis, the highest amount of (vinylbenzyl) trimethylammonium chloride was incorporated into the terpolymer structure by the inverse microemulsion method. In contrast, the solution method yielded higher contents of acrylamide and N-vinylpyrrolidone. The viscosity properties of the terpolymers in aqueous solutions were directly correlated to their molecular weight and synthesis conditions. Terpolymers based on acrylamide, N-vinylpyrrolidone and (vinylbenzyl)trimethylammonium chloride (VBTA) were synthesized using inverse microemulsion and solution methods. The microemulsion promoted the incorporation of VBTA in the terpolymer structure.![]()
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Affiliation(s)
- Evelyn Y Calvillo-Muñoz
- Instituto Politécnico Nacional, CIITEC Cerrada Cecati S/N, Colonia Santa Catarina de Azcapotzalco CP 02250 CDMX México
| | - Araceli Vega-Paz
- Instituto Mexicano del Petróleo Eje Central Norte Lázaro Cárdenas No. 152, col. San Bartolo Atepehuacan, G. A. Madero 07730 CDMX México
| | - Diego Guzman-Lucero
- Instituto Mexicano del Petróleo Eje Central Norte Lázaro Cárdenas No. 152, col. San Bartolo Atepehuacan, G. A. Madero 07730 CDMX México
| | - Irina V Lijanova
- Instituto Politécnico Nacional, CIITEC Cerrada Cecati S/N, Colonia Santa Catarina de Azcapotzalco CP 02250 CDMX México
| | - Octavio Olivares-Xometl
- Benemérita Universidad Autónoma de Puebla, Facultad de Ingeniería Química Av. San Claudio y 18 Sur, Ciudad Universitaria. Col. San Manuel 72570 Puebla México
| | - Natalya V Likhanova
- Instituto Mexicano del Petróleo Eje Central Norte Lázaro Cárdenas No. 152, col. San Bartolo Atepehuacan, G. A. Madero 07730 CDMX México
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12
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Properties of polyacrylamide composites reinforced by cellulose nanocrystals. Heliyon 2020; 6:e05529. [PMID: 33294677 PMCID: PMC7683315 DOI: 10.1016/j.heliyon.2020.e05529] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 09/02/2020] [Accepted: 11/12/2020] [Indexed: 12/02/2022] Open
Abstract
In this work, a series of polyacrylamide/cellulose nanocrystal (PAM/CNC) composites with a wide range of compositions were prepared by a solution casting method. Subsequently, the influence of the PAM conformation on the behaviour of the PAM/CNC composites was studied. The microstructural, thermal, and mechanical properties of the PAM/CNC composites were also investigated, as well as their flocculation and dispersion behaviour. Thermal degradation of both CNC and PAM in the composites occurred simultaneously, at a much higher temperature than the degradation of the neat CNC. By TEM and SEM, PAM globule aggregates in the PAM/CNC composites were detected. With an increase in the medium acidity, the PAM globule aggregate size of in the composites decreased. Moreover, the composite films cast from high pH solutions (extended PAM conformation) exhibited superior strength properties than those cast from low pH solutions (contracted coil PAM conformation). The PAM globule conformation provided good re-dispersibility of the freeze-dried PAM/CNC composites by preventing aggregation of the CNC particles. The PAM globule adsorption onto the CNC particles caused CNC surface hydrophobization and a decrease in their surface charge, while maintaining high colloidal stability of the CNC suspensions. Furthermore, the CNC particles with adsorbed PAM were demonstrated to be useful as emulsifiers and compatibilisers.
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13
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Hina M, Bashir S, Kamran K, Ramesh S, Ramesh K. Synthesis and characterization of self-healable poly (acrylamide) hydrogel electrolytes and their application in fabrication of aqueous supercapacitors. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.123020] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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14
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Nanomaterial-Based Drilling Fluids for Exploitation of Unconventional Reservoirs: A Review. ENERGIES 2020. [DOI: 10.3390/en13133417] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The world’s energy demand is steadily increasing where it has now become difficult for conventional hydrocarbon reservoir to meet levels of demand. Therefore, oil and gas companies are seeking novel ways to exploit and unlock the potential of unconventional resources. These resources include tight gas reservoirs, tight sandstone oil, oil and gas shales reservoirs, and high pressure high temperature (HPHT) wells. Drilling of HPHT wells and shale reservoirs has become more widespread in the global petroleum and natural gas industry. There is a current need to extend robust techniques beyond costly drilling and completion jobs, with the potential for exponential expansion. Drilling fluids and their additives are being customized in order to cater for HPHT well drilling issues. Certain conventional additives, e.g., filtrate loss additives, viscosifier additives, shale inhibitor, and shale stabilizer additives are not suitable in the HPHT environment, where they are consequently inappropriate for shale drilling. A better understanding of the selection of drilling fluids and additives for hydrocarbon water-sensitive reservoirs within HPHT environments can be achieved by identifying the challenges in conventional drilling fluids technology and their replacement with eco-friendly, cheaper, and multi-functional valuable products. In this regard, several laboratory-scale literatures have reported that nanomaterial has improved the properties of drilling fluids in the HPHT environment. This review critically evaluates nanomaterial utilization for improvement of rheological properties, filtrate loss, viscosity, and clay- and shale-inhibition at increasing temperature and pressures during the exploitation of hydrocarbons. The performance and potential of nanomaterials, which influence the nature of drilling fluid and its multi-benefits, is rarely reviewed in technical literature of water-based drilling fluid systems. Moreover, this review presented case studies of two HPHT fields and one HPHT basin, and compared their drilling fluid program for optimum selection of drilling fluid in HPHT environment.
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15
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Simultaneous thermal analysis of cationic, nonionic and anionic polyacrylamide. Heliyon 2020; 5:e02973. [PMID: 31890948 PMCID: PMC6926190 DOI: 10.1016/j.heliyon.2019.e02973] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 11/14/2019] [Accepted: 11/28/2019] [Indexed: 11/24/2022] Open
Abstract
Polyacrylamide (PAM) and its derivatives are the most commercially available water-soluble polymers and are frequently used for the production of clay-polymer composites. The characterization of their thermal behavior and decomposition was carried out mainly under reduced conditions by using N2, He or Ar gas flow. The object of this study was to investigate the thermal decomposition of cationic (PAMS,τ40Cl), nonionic (PAM°S), and anionic (NaPAMS,τ40) polyacrylamide under synthetic air (SynA) in detail using a thermogravimetry/differential scanning calorimetry (TG/DSC) system connected to a quadrupole mass spectrometer (MS). MS data indicated the release of NH3, CH4 and NO together with H2O, CO2 and NO2 during decomposition. The gas release differed between the three polymers. Stoichiometric calculations showed that PAMS,τ40Cl and PAM°S decomposed completely, while NaPAMS,τ40 decomposed only partially and the Na present for charge balancing remained in the form of Na2O. The thermal decomposition of PAMS,τ40Cl, PAM°S and NaPAMS,τ40 under SynA occurred via pyrolysis and oxidation reactions.
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16
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Multanen V, Bhushan B. Bioinspired self-healing, superliquiphobic and self-cleaning hydrogel-coated surfaces with high durability. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2019; 377:20190117. [PMID: 31177949 PMCID: PMC6562356 DOI: 10.1098/rsta.2019.0117] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/20/2019] [Indexed: 06/09/2023]
Abstract
Bioinspired self-healing materials are being developed with intrinsic or extrinsic mechanisms. Some materials heal by an external stimulus, such as heat, UV light, pH, electric field and humidity. Hydrogels are among the commonly used materials, which can self-heal by application of an external stimulus. In this study, a self-healing polyacrylamide hydrogel was selected which is known to swell when exposed to water and heal. Silica nanoparticles were added to the hydrogel and a fluorosilane overcoat was used to produce a superliquiphobic surface with a low tilt angle and self-cleaning properties. A fused titania coating on the glass substrate was used to promote adhesion to hydrogel coatings. Hydrogel-based coatings exhibited the ability to repel water and oil, anti-icing properties down to -60°C, self-cleaning, the ability to maintain superliquiphobicity in hot environments up to about 95°C and high wear resistance. The hydrogel-based coating also demonstrated self-healing capability after hydration of a scratched surface. This article is part of the theme issue 'Bioinspired materials and surfaces for green science and technology (part 2)'.
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Affiliation(s)
| | - Bharat Bhushan
- Nanoprobe Laboratory for Bio and Nanotechnology and Biomimetics (NLBB), The Ohio State University, 201 West 19th Avenue, Columbus, OH 43210-1142, USA
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17
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Sankaranarayanan S, Likozar B, Navia R. Real-time Particle Size Analysis Using the Focused Beam Reflectance Measurement Probe for In Situ Fabrication of Polyacrylamide-Filler Composite Materials. Sci Rep 2019; 9:10126. [PMID: 31300698 PMCID: PMC6625984 DOI: 10.1038/s41598-019-46451-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 06/28/2019] [Indexed: 11/18/2022] Open
Abstract
Real-time particle size analysis, using an engineered focused beam reflectance measurement (FBRM), was studied for the fabrication of chemical composite materials, applying various (inorganic/organic/biological) filler powders with polyacrylamide via the in situ polymerization production process at 80 °C for 24 h. The measured diameter dimensions, differential distribution functions and growth during reactive compound manufacturing technology were monitored by determining quantitative chord length, this being the altering scale use of FBRM technique. Materials characterizations such as formulation part-, scanning electron microscopy-, substance elemental- and complex Fourier-transform infrared spectroscopy analyses, supported well the successful structural preparation of differing-property constituent compositions. In addition, it was also observed that operations such as granulation, coating and filling, were involved in the design of stronger polymer-reinforcement components. A comparison of the surface area variation of montmorillonite (245 m2/g), alumina (236 m2/g) and residual biomass (0.8 m2/g) with their corresponding formed composites (112, 84 and 0.1 m2/g, respectively) revealed that the presence of thermoset plastic matrix results in a drop in interface due to a defined multiple step formation processing. Furthermore, thermal characterization of alumina and the developed nanocomposite materials confirmed, as expected, the interaction of the nanocomposite precursors.
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Affiliation(s)
- Sivashunmugam Sankaranarayanan
- Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Av. Francisco Salazar 01145, Temuco, 4780000, Chile.
- Department of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry, Hajdrihova 19, SI-1001, Ljubljana, Slovenia.
| | - Blaž Likozar
- Department of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry, Hajdrihova 19, SI-1001, Ljubljana, Slovenia
| | - Rodrigo Navia
- Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Av. Francisco Salazar 01145, Temuco, 4780000, Chile
- Department of Chemical Engineering, Faculty of Engineering and Sciences, Universidad de La Frontera, Av. Francisco Salazar 01145, Temuco, 4780000, Chile
- Centre for Biotechnology and Bioengineering (CeBiB), Universidad de La Frontera, Av. Francisco Salazar 01145, Temuco, 4780000, Chile
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18
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Xu G, Zhu Y, Wang X, Wang S, Cheng T, Ping R, Cao J, Lv K. Novel chitosan and Laponite based nanocomposite for fast removal of Cd(II), methylene blue and Congo red from aqueous solution. E-POLYMERS 2019. [DOI: 10.1515/epoly-2019-0025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractA series of chitosan and Laponite based nano-composite adsorbents, which showed an excellent performance for fast and efficient removal of Cd(II), methylene blue (MB) and Congo red (CR) from aqueous solution, were prepared. In the adsorbent, with the increase of Laponite component, the surface area increased from 44.69 m2 g-1 to 64.58 m2 g-1. As a result, the adsorption rates were enhanced by increasing Laponite component. The adsorption capacities for Cd(II) and MB increased with increasing Laponite component due the cationic characteristic of two pollutants, and the opposite result was found for the removal of CR. The impacts of some factors, e.g. solution pH, temperature, pollutant concentration and salt, on the adsorption capacity were investigated. Additionally, this adsorbent could be effectively regenerated by dilute HCl solution after the adsorption of Cd(II), and the mixture of methanol and acetic acid was a suitable eluent after the adsorption of two dyes.
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Affiliation(s)
- Guobin Xu
- College of Chemical Engineering, China University of Petroleum (East China), Qingdao266580, China
| | - Yuejun Zhu
- State Key Lab of Offshore Oil Exploitation, Beijing100028, China
- CNOOC Research Institute Co. Ltd, Beijing100028, China
| | - Xiujun Wang
- State Key Lab of Offshore Oil Exploitation, Beijing100028, China
- CNOOC Research Institute Co. Ltd, Beijing100028, China
| | - Shanshan Wang
- State Key Lab of Offshore Oil Exploitation, Beijing100028, China
- CNOOC Research Institute Co. Ltd, Beijing100028, China
| | - Tianxiang Cheng
- Shandong Key Laboratory of Oilfield Chemistry, School of Petroleum Engineering, China University of Petroleum (East China), Qingdao266580, China
| | - Rang Ping
- College of Chemical Engineering, China University of Petroleum (East China), Qingdao266580, China
| | - Jie Cao
- Shandong Key Laboratory of Oilfield Chemistry, School of Petroleum Engineering, China University of Petroleum (East China), Qingdao266580, China
| | - Kaihe Lv
- Shandong Key Laboratory of Oilfield Chemistry, School of Petroleum Engineering, China University of Petroleum (East China), Qingdao266580, China
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19
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Singh B, Kumar R. Designing biocompatible sterile organogel–bigel formulations for drug delivery applications using green protocol. NEW J CHEM 2019. [DOI: 10.1039/c8nj05480k] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Present article discusses the formation of a bigel formulation for drug delivery applications via a newly developed green approach using gamma radiation induced crosslinking.
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Affiliation(s)
- Baljit Singh
- Department of Chemistry
- Himachal Pradesh University
- Shimla-171005
- India
| | - Rajender Kumar
- Department of Chemistry
- Himachal Pradesh University
- Shimla-171005
- India
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20
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Xiong C, Wei F, Li W, Liu P, Wu Y, Dai M, Chen J. Mechanism of Polyacrylamide Hydrogel Instability on High-Temperature Conditions. ACS OMEGA 2018; 3:10716-10724. [PMID: 31459189 PMCID: PMC6645078 DOI: 10.1021/acsomega.8b01205] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 07/19/2018] [Indexed: 05/27/2023]
Abstract
A gel system composed of acrylamide (AM), N,N'-methylenebisAM (BIS), and ammonium persulfate ((NH4)2S2O8) was developed and applied extensively in reservoirs to reduce water cut and increase oil production in mature fields. However, this gel system suffers from thermal stability loss and syneresis at high temperatures that reduces its ability to control water flow. It has been widely accepted that the loss of gel thermal stability can be explained via three aspects: the rupture of polymer chains, the breakage of cross-linker chains, and hydrolysis of polymer. The mechanism of hydrogel syneresis through polymer hydrolysis has been investigated extensively in other publications. However, research on the other two mechanisms is quite limited. In this article, we conduct a series of experiments to demonstrate how the rupture of polymer and cross-linker chains leads to the hydrogel instability at high temperatures. Viscosity and energy-dispersive system measurements suggested that polyAM chains were disrupted by the oxidation reactions involving free radicals. The method to measure the cross-linking degree was established and in combination with X-ray photoelectron spectroscopy measurements, the results showed that cross-linker chains were broken as a result of weaker C-N bond resulting from positively charged mesomethylene carbon and hydrolysis of amide groups on the cross-linker. Because of the application of deionized water in the experiments, nuclear magnetic resonance and FTIR measurements showed that the hydrolysis degree of polymer was weak. Hence, our results verified that breakage of polymer and cross-linker chains led to the rupture of the gel network at high temperature. Besides, cross-linker chains may play a more important role in the thermal stability of the gel, which explains some work into high-temperature-resistant gels.
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Affiliation(s)
- Chunming Xiong
- Research
Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, P. R. China
| | - Falin Wei
- Research
Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, P. R. China
| | - Weitao Li
- Research
Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, P. R. China
| | - Pingde Liu
- Research
Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, P. R. China
| | - Yong Wu
- Sichuan
University, Chengdu 610044, P. R. China
| | - Mingli Dai
- Research
Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, P. R. China
| | - Jun Chen
- China
National Oil and Gas Exploration and Development Company Ltd., Beijing 100034, P. R. China
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21
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Saha R, Uppaluri RVS, Tiwari P. Silica Nanoparticle Assisted Polymer Flooding of Heavy Crude Oil: Emulsification, Rheology, and Wettability Alteration Characteristics. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b00540] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rahul Saha
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Ramgopal V. S. Uppaluri
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Pankaj Tiwari
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
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22
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Evaluation of rheological properties of a novel thermo-viscosifying functional polymer for enhanced oil recovery. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.04.053] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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23
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King B, Lessard BH. Controlled Synthesis and Degradation of Poly(N-(isobutoxymethyl) acrylamide) Homopolymers and Block Copolymers. MACROMOL REACT ENG 2017. [DOI: 10.1002/mren.201600073] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Benjamin King
- Department of Chemical and Biological Engineering; University of Ottawa; 161 Louis Pasteur Ottawa Ontario K1N 6N5 Canada
| | - Benoît H. Lessard
- Department of Chemical and Biological Engineering; University of Ottawa; 161 Louis Pasteur Ottawa Ontario K1N 6N5 Canada
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24
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Morsi RE, Labena A, Khamis EA. Core/shell (ZnO/polyacrylamide) nanocomposite: In-situ emulsion polymerization, corrosion inhibition, anti-microbial and anti-biofilm characteristics. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2016.03.037] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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25
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Roos K, Planes M, Bakkali-Hassani C, Mehats J, Vax A, Carlotti S. Solvent-Free Anionic Polymerization of Acrylamide: A Mechanistic Study for the Rapid and Controlled Synthesis of Polyamide-3. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02410] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kevin Roos
- LCPO, UMR 5629, University of Bordeaux, F-33600 Pessac, France
- LCPO, UMR 5629, CNRS, F-33600 Pessac, France
- UMR 5629, Bordeaux INP, F-33600 Pessac, France
| | - Mikael Planes
- LCPO, UMR 5629, University of Bordeaux, F-33600 Pessac, France
- LCPO, UMR 5629, CNRS, F-33600 Pessac, France
- UMR 5629, Bordeaux INP, F-33600 Pessac, France
| | - Camille Bakkali-Hassani
- LCPO, UMR 5629, University of Bordeaux, F-33600 Pessac, France
- LCPO, UMR 5629, CNRS, F-33600 Pessac, France
- UMR 5629, Bordeaux INP, F-33600 Pessac, France
| | - Jérémy Mehats
- LCPO, UMR 5629, University of Bordeaux, F-33600 Pessac, France
- LCPO, UMR 5629, CNRS, F-33600 Pessac, France
- UMR 5629, Bordeaux INP, F-33600 Pessac, France
| | - Amelie Vax
- LCPO, UMR 5629, University of Bordeaux, F-33600 Pessac, France
- LCPO, UMR 5629, CNRS, F-33600 Pessac, France
- UMR 5629, Bordeaux INP, F-33600 Pessac, France
| | - Stephane Carlotti
- LCPO, UMR 5629, University of Bordeaux, F-33600 Pessac, France
- LCPO, UMR 5629, CNRS, F-33600 Pessac, France
- UMR 5629, Bordeaux INP, F-33600 Pessac, France
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26
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Simeonov MS, Apostolov AA, Vassileva ED. In situ calcium phosphate deposition in hydrogels of poly(acrylic acid)–polyacrylamide interpenetrating polymer networks. RSC Adv 2016. [DOI: 10.1039/c5ra26066c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Interpenetrating networks of poly(acrylic acid) and polyacrylamide were used for the first time as templates for in situ calcium phosphate (CP) deposition in an attempt to mimic the naturally occurring biomineralization.
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Affiliation(s)
- M. S. Simeonov
- Sofia University
- Faculty of Chemistry and Pharmacy
- Bulgaria
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27
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Saber-Samandari S, Gazi M. Pullulan based porous semi-IPN hydrogel: Synthesis, characterization and its application in the removal of mercury from aqueous solution. J Taiwan Inst Chem Eng 2015. [DOI: 10.1016/j.jtice.2015.01.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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28
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Chen L, Zhang G, Ge J, Jiang P, Zhu X, Ran Y, Liu D. Mechanism of sodium tripolyphosphate inhibiting the syneresis of HPAM hydrogel. RSC Adv 2015. [DOI: 10.1039/c5ra19465b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Experimental investigations have been conducted to elucidate the mechanism of sodium tripolyphosphate (STPP) inhibiting hydrogel syneresis with respect to the reaction between STPP and partly hydrolyzed polyacrylamide (HPAM).
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Affiliation(s)
- Lifeng Chen
- College of Petroleum Engineering
- China University of Petroleum (East China)
- Qingdao
- China
| | - Guicai Zhang
- College of Petroleum Engineering
- China University of Petroleum (East China)
- Qingdao
- China
| | - Jijiang Ge
- College of Petroleum Engineering
- China University of Petroleum (East China)
- Qingdao
- China
| | - Ping Jiang
- College of Petroleum Engineering
- China University of Petroleum (East China)
- Qingdao
- China
| | - Xiaoming Zhu
- College of Petroleum Engineering
- China University of Petroleum (East China)
- Qingdao
- China
| | - Yunling Ran
- College of Petroleum Engineering
- China University of Petroleum (East China)
- Qingdao
- China
| | - Dexin Liu
- College of Petroleum Engineering
- China University of Petroleum (East China)
- Qingdao
- China
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29
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Gou S, Luo S, Liu T, Zhao P, He Y, Pan Q, Guo Q. A novel water-soluble hydrophobically associating polyacrylamide based on oleic imidazoline and sulfonate for enhanced oil recovery. NEW J CHEM 2015. [DOI: 10.1039/c5nj01153a] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report here a novel imidazoline functionalized hydrophobically associating copolymer that exhibits excellent rheological properties and outstanding potential for enhanced oil recovery.
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Affiliation(s)
- Shaohua Gou
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
- Southwest Petroleum University
- Chengdu
- China
- Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province
| | - Shan Luo
- Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province
- College of Chemistry and Chemical Engineering
- Southwest Petroleum University
- Chengdu
- China
| | - Tongyi Liu
- Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province
- College of Chemistry and Chemical Engineering
- Southwest Petroleum University
- Chengdu
- China
| | - Peng Zhao
- Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province
- College of Chemistry and Chemical Engineering
- Southwest Petroleum University
- Chengdu
- China
| | - Yang He
- Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province
- College of Chemistry and Chemical Engineering
- Southwest Petroleum University
- Chengdu
- China
| | - Qinglin Pan
- Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province
- College of Chemistry and Chemical Engineering
- Southwest Petroleum University
- Chengdu
- China
| | - Qipeng Guo
- Polymers Research Group
- Institute for Frontier Materials
- Deakin University
- Geelong
- Australia
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30
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Aqueous Hybrids of Silica Nanoparticles and Hydrophobically Associating Hydrolyzed Polyacrylamide Used for EOR in High-Temperature and High-Salinity Reservoirs. ENERGIES 2014. [DOI: 10.3390/en7063858] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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31
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Ding F, Tang Z, Ding B, Xiong Y, Cai J, Deng H, Du Y, Shi X. Tunable thermosensitive behavior of multiple responsive chitin. J Mater Chem B 2014; 2:3050-3056. [PMID: 32261680 DOI: 10.1039/c4tb00067f] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Chitin can be dissolved and homogeneously functionalized in NaOH/urea aqueous solvent. Previously, we reported that chitin modified with acrylamide (AMC) possesses high water solubility and can undergo a sol-gel transition responding to pH and cationic ions. In this report, we further explored the thermosensitive behavior of this multiple responsive chitin. We showed that the sol-gel transition temperature of AMC can be facilely adjusted by the degree of substitution (DS), pH, polymer concentration and the presence of anions or cations. Importantly, AMC can form a hydrogel at 37 °C and return to solution at 4 °C by adjusting experimental parameters. We anticipate this multiple responsive chitin may have potential applications in injectable materials and smart drug delivery.
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Affiliation(s)
- Fuyuan Ding
- School of Resource and Environmental Science, Hubei Biomass-Resource Chemistry, Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan, 430079, China.
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32
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Xu L, Che L, Zheng J, Huang G, Wu X, Chen P, Zhang L, Hu Q. Synthesis and thermal degradation property study of N-vinylpyrrolidone and acrylamide copolymer. RSC Adv 2014. [DOI: 10.1039/c4ra05720a] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of acrylamide (AM) and N-vinylpyrrolidone (NVP) copolymer with various NVP content were synthesised by free radical solution polymerization.
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Affiliation(s)
- Lili Xu
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065, China
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33
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Mishra V, Kumar R. Uptake of hazardous heavy metal ions by aqueous solution of poly(acrylamide) prepared through atom transfer radical polymerization process. J Appl Polym Sci 2012. [DOI: 10.1002/app.38521] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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34
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Thermal degradation behavior and kinetic studies of polyacrylamide gel in TiO2 nanoparticles synthesis. IRANIAN POLYMER JOURNAL 2012. [DOI: 10.1007/s13726-012-0086-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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35
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Huang G, Yang J, Gao J, Wang X. Thin Films of Intumescent Flame Retardant-Polyacrylamide and Exfoliated Graphene Oxide Fabricated via Layer-by-Layer Assembly for Improving Flame Retardant Properties of Cotton Fabric. Ind Eng Chem Res 2012. [DOI: 10.1021/ie301911t] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Guobo Huang
- School of Pharmaceutical and Chemical
Engineering, Taizhou University, Linhai,
Zhejiang 317000, P. R. China
| | - Jianguo Yang
- School of Pharmaceutical and Chemical
Engineering, Taizhou University, Linhai,
Zhejiang 317000, P. R. China
| | - Jianrong Gao
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou, Zhejiang
310014, P. R. China
| | - Xu Wang
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou, Zhejiang
310014, P. R. China
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Thermoviscosifying polymer used for enhanced oil recovery: rheological behaviors and core flooding test. Polym Bull (Berl) 2012. [DOI: 10.1007/s00289-012-0798-7] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Hynd MR, Turner JN, Shain W. Applications of hydrogels for neural cell engineering. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 18:1223-44. [DOI: 10.1163/156856207782177909] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Matthew R. Hynd
- a Laboratory of Nervous System Disorders, Wadsworth Center, P.O. Box 509, Empire State Plaza, Albany, NY 12201-0509, USA
| | - James N. Turner
- b Laboratory of Nervous System Disorders, Wadsworth Center, P.O. Box 509, Empire State Plaza, Albany, NY 12201-0509, USA
| | - William Shain
- c Laboratory of Nervous System Disorders, Wadsworth Center, P.O. Box 509, Empire State Plaza, Albany, NY 12201-0509, USA
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Effect of inorganic salts on viscosifying behavior of a thermoassociative water-soluble terpolymer based on 2-acrylamido-methylpropane sulfonic acid. J Appl Polym Sci 2012. [DOI: 10.1002/app.36745] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Shukla NB, Madras G. Photo, thermal, and ultrasonic degradation of EGDMA-crosslinked poly(acrylic acid-co-sodium acrylate-co-acrylamide) superabsorbents. J Appl Polym Sci 2011. [DOI: 10.1002/app.36289] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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A novel thermoviscosifying water-soluble polymer: Synthesis and aqueous solution properties. J Appl Polym Sci 2010. [DOI: 10.1002/app.31884] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Kabiri K, Mirzadeh H, Zohuriaan-Mehr MJ. Undesirable effects of heating on hydrogels. J Appl Polym Sci 2008. [DOI: 10.1002/app.28148] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Bhardwaj P, Singh S, Singh V, Aggarwal S, Mandal UK. Nanosize Polyacrylamide/SiO2 Composites by Inverse Microemulsion Polymerization. INT J POLYM MATER PO 2008. [DOI: 10.1080/00914030701729156] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Pallavi Bhardwaj
- a University School of Basic and Applied Science , GGS Indraprastha University , Delhi, India
| | - Sujata Singh
- a University School of Basic and Applied Science , GGS Indraprastha University , Delhi, India
| | - Vaishali Singh
- a University School of Basic and Applied Science , GGS Indraprastha University , Delhi, India
| | - Saroj Aggarwal
- a University School of Basic and Applied Science , GGS Indraprastha University , Delhi, India
| | - U. K. Mandal
- b University School of Chemical Technology , GGS Indraprastha University , Delhi, India
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Tolstikh LI, Akimov NI, Golubeva IA, Shvetsov IA. Degradation and Stabilization of Polyacrylamide in Polymer Flooding Conditions. INT J POLYM MATER PO 2006. [DOI: 10.1080/00914039208041113] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Vijayalakshmi SP, Madras G. Thermal degradation of water soluble polymers and their binary blends. J Appl Polym Sci 2006. [DOI: 10.1002/app.23246] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Drevelle C, Duquesne S, Le Bras M, Lefebvre J, Delobel R, Castrovinci A, Magniez C, Vouters M. Influence of ammonium polyphosphate on the mechanism of thermal degradation of an acrylic binder resin. J Appl Polym Sci 2004. [DOI: 10.1002/app.20868] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Yang MH. On the thermal degradation of poly(styrene sulfone)s. V. Thermogravimetric kinetic simulation of polyacrylamide pyrolysis. J Appl Polym Sci 2002. [DOI: 10.1002/app.10900] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Hornsby P, Wang J, Rothon R, Jackson G, Wilkinson G, Cossick K. Thermal decomposition behaviour of polyamide fire-retardant compositions containing magnesium hydroxide filler. Polym Degrad Stab 1996. [DOI: 10.1016/0141-3910(95)00181-6] [Citation(s) in RCA: 99] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Aggour Y. Thermal degradation of copolymers of 2-acrylamido-2-methylpropanesulphonic acid with acrylamide. Polym Degrad Stab 1994. [DOI: 10.1016/0141-3910(94)90034-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Golubeva IA, Tolstych LI, Gallyamova EP, Zeldina SS. Degradation and Stabilization of Polyacrylamide. INT J POLYM MATER PO 1992. [DOI: 10.1080/00914039208035415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- I. A. Golubeva
- a Moscow, Gubkin Oil and Gas Institute , 117917 , Moscow , USSR
| | - L. I. Tolstych
- a Moscow, Gubkin Oil and Gas Institute , 117917 , Moscow , USSR
| | | | - S. S. Zeldina
- a Moscow, Gubkin Oil and Gas Institute , 117917 , Moscow , USSR
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Dupuy B, Gin H, Cadic C, Baquey A, Baquey C, Ducassou D. Crosslinking with diacrylylpiperazine (PIP) reduces activation of complement by polyacrylamide microcapsules. BIOMATERIALS, ARTIFICIAL CELLS, AND IMMOBILIZATION BIOTECHNOLOGY : OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY FOR ARTIFICIAL CELLS AND IMMOBILIZATION BIOTECHNOLOGY 1991; 19:667-74. [PMID: 1810401 DOI: 10.3109/10731199109117845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Activation of the complement system in vitro by a series of microcapsules based on polylysine, alginate or polyacrylamide was determined. Least activation was observed with microcapsules whose outer layer was composed of polyacrylamide. Activation was further reduced using diacrylylpiperazine instead of bisacrylamide as crosslinker.
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Affiliation(s)
- B Dupuy
- INSERM U.306, Bordeaux, France
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