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Doan-Nguyen TP, Mantala K, Atithep T, Crespy D. Osmotic Pressure as Driving Force for Reducing the Size of Nanoparticles in Emulsions. ACS NANO 2022; 17:940-954. [PMID: 36472438 DOI: 10.1021/acsnano.2c05565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
We describe here a method to decrease particle size of nanoparticles synthesized by miniemulsion polymerization. Small nanoparticles or nanocapsules were obtained by generating an osmotic pressure to induce the diffusion of monomer molecules from the dispersed phase of a miniemulsion before polymerization to an upper oil layer. The size reduction is dependent on the difference in concentration of monomer in the dispersed phase and in the upper oil layer and on the solubility of the monomer in water. By labeling the emulsion droplets with a copolymer of stearyl methacrylate and a polymerizable dye, we demonstrated that the migration of the monomer to the upper hexadecane layer relied on molecular diffusion rather than diffusion of monomer droplets to the oil layer. Moreover, surface tension measurements confirmed that the emulsions were still in the miniemulsion regime and not in the microemulsion regime. The particle size can be tuned by controlling the duration during which the miniemulsion stayed in contact with the hexadecane layer, the interfacial area between the miniemulsion and the hexadecane layer and by the concentration of surfactant. Our method was applied to reduce the size of polystyrene and poly(methyl methacrylate) nanoparticles, nanocapsules of a copolymer of styrene and methyl methacrylic acid, and silica nanocapsules. This work demonstrated that a successful reduction of nanoparticle size in the miniemulsion process can be achieved without using excess amounts of surfactant. The method relies on building osmotic pressure in oil droplets dispersed in water which acts as semipermeable membrane.
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Affiliation(s)
- Thao P Doan-Nguyen
- Max Planck-VISTEC Partner Laboratory for Sustainable Materials, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
| | - Kanyarat Mantala
- Max Planck-VISTEC Partner Laboratory for Sustainable Materials, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
| | - Thassanant Atithep
- Max Planck-VISTEC Partner Laboratory for Sustainable Materials, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
| | - Daniel Crespy
- Max Planck-VISTEC Partner Laboratory for Sustainable Materials, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
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Ambreen J, Al-Harbi F, Sakhawat H, Ajmal M, Naeem H, Farooqi ZH, Batool N, Siddiq M. Fabrication of poly (N-vinylcaprolactam-co-acrylic acid)-silver nanoparticles composite microgel with substantial potential of hydrogen peroxide sensing and catalyzing the reduction of water pollutants. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118931] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Marsili L, Dal Bo M, Berti F, Toffoli G. Chitosan-Based Biocompatible Copolymers for Thermoresponsive Drug Delivery Systems: On the Development of a Standardization System. Pharmaceutics 2021; 13:1876. [PMID: 34834291 PMCID: PMC8620438 DOI: 10.3390/pharmaceutics13111876] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/27/2021] [Accepted: 11/02/2021] [Indexed: 12/26/2022] Open
Abstract
Chitosan is a natural polysaccharide that is considered to be biocompatible, biodegradable and non-toxic. The polymer has been used in drug delivery applications for its positive charge, which allows for adhesion with and recognition of biological tissues via non-covalent interactions. In recent times, chitosan has been used for the preparation of graft copolymers with thermoresponsive polymers such as poly-N-vinylcaprolactam (PNVCL) and poly-N-isopropylamide (PNIPAM), allowing the combination of the biodegradability of the natural polymer with the ability to respond to changes in temperature. Due to the growing interest in the utilization of thermoresponsive polymers in the biological context, it is necessary to increase the knowledge of the key principles of thermoresponsivity in order to obtain comparable results between different studies or applications. In the present review, we provide an overview of the basic principles of thermoresponsivity, as well as a description of the main polysaccharides and thermoresponsive materials, with a special focus on chitosan and poly-N-Vinyl caprolactam (PNVCL) and their biomedical applications.
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Affiliation(s)
- Lorenzo Marsili
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via Licio Giorgieri 1, 34127 Trieste, Italy;
| | - Michele Dal Bo
- Experimental and Clinical Pharmacology Unit, CRO National Cancer Institute IRCCS, Via Franco Gallini 2, 33081 Aviano, Italy; (M.D.B.); (G.T.)
| | - Federico Berti
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via Licio Giorgieri 1, 34127 Trieste, Italy;
| | - Giuseppe Toffoli
- Experimental and Clinical Pharmacology Unit, CRO National Cancer Institute IRCCS, Via Franco Gallini 2, 33081 Aviano, Italy; (M.D.B.); (G.T.)
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Marsili L, Dal Bo M, Eisele G, Donati I, Berti F, Toffoli G. Characterization of Thermoresponsive Poly-N-Vinylcaprolactam Polymers for Biological Applications. Polymers (Basel) 2021; 13:2639. [PMID: 34451180 PMCID: PMC8400179 DOI: 10.3390/polym13162639] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 07/28/2021] [Accepted: 08/04/2021] [Indexed: 11/17/2022] Open
Abstract
Poly-N-Vinylcaprolactam (PNVCL) is a thermoresponsive polymer that exhibits lower critical solution temperature (LCST) between 25 and 50 °C. Due to its alleged biocompatibility, this polymer is becoming popular for biomedical and environmental applications. PNVCL with carboxyl terminations has been widely used for the preparation of thermoresponsive copolymers, micro- and nanogels for drug delivery and oncological therapies. However, the fabrication of such specific targeting devices needs standardized and reproducible preparation methods. This requires a deep understanding of how the miscibility behavior of the polymer is affected by its structural properties and the solution environment. In this work, PNVCL-COOH polymers were prepared via free radical polymerization (FRP) in order to exhibit LCST between 33 and 42 °C. The structural properties were investigated with NMR, FT-IR and conductimetric titration and the LCST was calculated via UV-VIS and DLS. The LCST is influenced by the molecular mass, as shown by both DLS and viscosimetric values. Finally, the behavior of the polymer was described as function of its concentration and in presence of different biologically relevant environments, such as aqueous buffers, NaCl solutions and human plasma.
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Affiliation(s)
- Lorenzo Marsili
- Experimental and Clinical Pharmacology Unit, CRO National Cancer Institute, IRCCS, Via Franco Gallini 2, 33081 Aviano, Italy
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via Licio Giorgieri 1, 34127 Trieste, Italy
| | - Michele Dal Bo
- Experimental and Clinical Pharmacology Unit, CRO National Cancer Institute, IRCCS, Via Franco Gallini 2, 33081 Aviano, Italy
| | - Giorgio Eisele
- Centro Alta Tecnologia "Istituto di Ricerche Chimiche e Biochimiche G. Ronzoni" Srl, via G. Colombo 81, 20133 Milan, Italy
| | - Ivan Donati
- Department of Life Sciences, University of Trieste, Via Licio Giorgieri 5, 34127 Trieste, Italy
| | - Federico Berti
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via Licio Giorgieri 1, 34127 Trieste, Italy
| | - Giuseppe Toffoli
- Experimental and Clinical Pharmacology Unit, CRO National Cancer Institute, IRCCS, Via Franco Gallini 2, 33081 Aviano, Italy
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Impact of Poly (Styrene-Acrylic Acid) Latex Nanoparticles on Colorectal and Cervical Cancer Cells. Polymers (Basel) 2021; 13:polym13132025. [PMID: 34206194 PMCID: PMC8271488 DOI: 10.3390/polym13132025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 06/12/2021] [Accepted: 06/16/2021] [Indexed: 01/22/2023] Open
Abstract
Polymer nanoparticles are a promising approach for cancer treatment and detection, due to their biocompatibility, biodegradability, targeting capabilities, capacity for drug loading and long blood circulation time. This study aims to evaluate the impact of poly (styrene–acrylic acid) latex particles on colorectal and cervical cancer cells for anti-tumor efficiency. Latex particles were synthesized by a surfactant-free radical emulsion polymerization process and the obtained polymer particles were characterized in terms of size, size distribution, morphology using scanning electron microscopy (SEM) and transmission electron microscopy (TEM), and electrokinetic property (i.e., zeta potential). Human colorectal and cervical cancer, and normal cell lines, were then treated with different concentrations of poly (styrene–acrylic acid) latex particles. The cell morphology changes were pointed out using an optical microscope and the nanoparticles’ (NPs) cell cytotoxicity was evaluated using MTT assay. The obtained results showed that poly (styrene–acrylic acid) latex particles are effective against colorectal and cervical cancer cells if treated with an appropriate particle concentration for 48 h. In addition, it showed that normal cells are the least affected by this treatment. This indicates that these NPs are safe as a drug delivery carrier when used at a low concentration.
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Mutharani B, Ranganathan P, Chen SM, Chen TW, Eldesoky GE, Ajmal Ali M, Wabaidur SM. Temperature-enabled reversible "On/Off" switch-like hazardous herbicide picloram voltammetric sensor in agricultural and environmental samples based on thermo-responsive PVCL-tethered MWCNT@Au catalyst. JOURNAL OF HAZARDOUS MATERIALS 2021; 402:123672. [PMID: 33254749 DOI: 10.1016/j.jhazmat.2020.123672] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 08/05/2020] [Accepted: 08/07/2020] [Indexed: 05/16/2023]
Abstract
Picloram (PCR), a vastly utilized chlorinated herbicide, is very stable in water and soil with severe ecological and health impacts. It is necessary to establish a fast and highly sensitive technique for accurately detecting trace level PCR in agricultural and environmental samples. We employed a temperature-responsive poly(N-vinylcaprolactam)-tethered multiwalled carbon nanotubes (MWCNT-PVCL) decorated gold nanoparticles (Au@MWCNT-PVCL) catalyst on the electrochemical sensor for the sensitive "On/Off" switch-like detection of PCR. The effect of temperature-sensitive catalyst surface chemistry on electrocatalytic activity was scrutinized. Results showed that the hydrophilic surface of PVCL at 25 °C (<lower critical solution temperature (LCST)) extended to bury the electroactive sites of Au nanoparticles and MWCNT, and the PCR unable to pass over the PVCL to achieve electron exchange process, signifying the "Off" state. Surface wettability of the prepared Au@MWCNT-PVCL then spontaneously switched its hydrophilic to hydrophobic surface one at 40 °C (>LCST) that immensely upgraded PCR oxidation on the catalyst in the electrochemical reaction, signifying the "On" state. The detection of the Au@MWCNT-PVCL modified electrode ranged from 0.02-183 μM with a low detection limit (LOD) of 1.5 nM at 40 °C toward PCR. The proposed sensor was successfully used to detect PCR in real agricultural and environmental samples.
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Affiliation(s)
- Bhuvanenthiran Mutharani
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC
| | - Palraj Ranganathan
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC
| | - Shen-Ming Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC.
| | - Tse-Wei Chen
- Research and Development Center for Smart Textile Technology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC; Department of Materials, Imperial College London, London, SW7 2AZ, United Kingdom
| | - Gaber E Eldesoky
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Mohammad Ajmal Ali
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Saikh M Wabaidur
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
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Wang Y, Wang W, Gu Z, Miao X, Huang Q, Chang B. Temperature-responsive iron nanozymes based on poly( N-vinylcaprolactam) with multi-enzyme activity. RSC Adv 2020; 10:39954-39966. [PMID: 35515401 PMCID: PMC9057499 DOI: 10.1039/d0ra07226e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 09/28/2020] [Indexed: 11/21/2022] Open
Abstract
Iron (Fe)-based nanozymes are widely applied in the biomedical field due to their enzyme-like catalytic activity. Herein, Fe(ii)-based coordination polymer nanohydrogels (FeCPNGs) have been conveniently prepared as a new type of nanozyme by the chelation reaction between ferrous iron and polymer nanohydrogels. The P(VCL-co-NMAM) nanohydrogels prepared by a reflux precipitation polymerization method using N-vinylcaprolactam (VCL) and N-methylol acrylamide (NMAM) as monomers and N,N-methylenebisacrylamide (MBA) as a crosslinker were esterified using P2O5 and then chelated with Fe(ii) ions to form nanozymes with peroxidase and superoxide dismutase (SOD) activity. It was found by dynamic light scattering (DLS) and transmission electron microscopy (TEM) that the nanohydrogels prepared with a monomer concentration of 4% and mass ratio of 1 : 1 (VCL : NMAM) had more uniform particle size, better dispersion and a distinct temperature response. The results of Fourier transform infrared (FTIR), DLS, TEM, X-ray powder diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) indicated the successful preparation of the esterified nanohydrogel and FeCPNGs. Of particular importance is that such FeCPNGs can functionally mimic two antioxidant enzymes (peroxidase and superoxide dismutase) by UV analysis of catalytic oxidation between 3,3,5,5-tetramethylbenzidine (TMB) and H2O2 and the kit analysis of SOD-like activity.
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Affiliation(s)
- Yang Wang
- Department of Medical Technology, Suzhou Chien-shiung Institute of Technology Taicang 215411 Jiangsu Province P. R. China
| | - Wei Wang
- Nhwa Pharma. Corporation Xuzhou 221000 Jiangsu Province P. R.China
| | - Zhun Gu
- Department of Medical Technology, Suzhou Chien-shiung Institute of Technology Taicang 215411 Jiangsu Province P. R. China
| | - Xiangyang Miao
- Department of Medical Technology, Suzhou Chien-shiung Institute of Technology Taicang 215411 Jiangsu Province P. R. China
| | - Qiuyan Huang
- Department of Medical Technology, Suzhou Chien-shiung Institute of Technology Taicang 215411 Jiangsu Province P. R. China
| | - Baisong Chang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology Wuhan 430070 P. R. China
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González-Ayón MA, Licea-Claverie A, Sañudo-Barajas JA. Different Strategies for the Preparation of Galactose-Functionalized Thermo-Responsive Nanogels with Potential as Smart Drug Delivery Systems. Polymers (Basel) 2020; 12:E2150. [PMID: 32967249 PMCID: PMC7569999 DOI: 10.3390/polym12092150] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 09/04/2020] [Accepted: 09/04/2020] [Indexed: 01/21/2023] Open
Abstract
Different synthetic strategies were tested for the incorporation of galactose molecules on thermoresponsive nanogels owing to their affinity for receptors expressed in cancer cells. Three families of galactose-functionalized poly(N-vinylcaprolactam) nanogels were prepared with the aim to control the introduction of galactose-moieties into the core, the core-shell interface and the shell. First and second of the above mentioned, were prepared via surfactant free emulsion polymerization (SFEP) by a free-radical mechanism and the third one, via SFEP/reversible addition-fragmentation chain transfer (RAFT) polymerization. Synthetic recipes for the SFEP/free radical method included besides N-vinylcaprolactam (NVCL), a shell forming poly(ethylene glycol) methyl ether methacrylate (PEGMA), while the galactose (GAL) moiety was introduced via 6-O-acryloyl-1,2,:3,4-bis-O-(1-methyl-ethylidene)-α-D-galactopiranose (6-ABG, protected GAL-monomer): nanogels I, or 2-lactobionamidoethyl methacrylate (LAMA, GAL-monomer): nanogels II. For the SFEP/RAFT methodology poly(2-lactobionamidoethyl methacrylate) as GAL macro-chain transfer agent (PLAMA macro-CTA) was first prepared and on a following stage, the macro-CTA was copolymerized with PEGMA and NVCL, nanogels III. The crosslinker ethylene glycol dimethacrylate (EGDMA) was added in both methodologies for the polymer network construction. Nanogel's sizes obtained resulted between 90 and 370 nm. With higher content of PLAMA macro-CTA or GAL monomer in nanogels, a higher the phase-transition temperature (TVPT) was observed with values ranging from 28 to 46 °C. The ρ-parameter, calculated by the ratio of gyration and hydrodynamic radii from static (SLS) and dynamic (DLS) light scattering measurements, and transmission electron microscopy (TEM) micrographs suggest that core-shell nanogels of flexible chains were obtained; in either spherical (nanogels II and III) or hyperbranched (nanogels I) form.
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Affiliation(s)
- Mirian A. González-Ayón
- Centro de Graduados e Investigación en Química, Tecnológico Nacional de México/Instituto Tecnológico de Tijuana, Apartado Postal 1166, Tijuana 22454, Mexico;
| | - Angel Licea-Claverie
- Centro de Graduados e Investigación en Química, Tecnológico Nacional de México/Instituto Tecnológico de Tijuana, Apartado Postal 1166, Tijuana 22454, Mexico;
| | - J. Adriana Sañudo-Barajas
- Centro de Investigación en Alimentación y Desarrollo, A. C. Carretera a El dorado Km 5.5, Culiacán 80110, Mexico;
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Gumerov RA, Gau E, Xu W, Melle A, Filippov SA, Sorokina AS, Wolter NA, Pich A, Potemkin II. Amphiphilic PVCL/TBCHA microgels: From synthesis to characterization in a highly selective solvent. J Colloid Interface Sci 2020; 564:344-356. [DOI: 10.1016/j.jcis.2019.12.123] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 12/26/2019] [Accepted: 12/27/2019] [Indexed: 10/25/2022]
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Peng J, Tang D, Lv H, Wang N, Yang X, Sun Z, Yu Z. Thermal phase transition of poly(N-vinyl caprolactam)-based copolymers: the distribution of hydrophilic units within polymeric chains. Colloid Polym Sci 2019. [DOI: 10.1007/s00396-019-04537-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Etchenausia L, Villar-Alvarez E, Forcada J, Save M, Taboada P. Evaluation of cationic core-shell thermoresponsive poly(N-vinylcaprolactam)-based microgels as potential drug delivery nanocarriers. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 104:109871. [PMID: 31499979 DOI: 10.1016/j.msec.2019.109871] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 06/05/2019] [Accepted: 06/06/2019] [Indexed: 01/21/2023]
Abstract
The present work investigates the potentiality of poly(N-vinyl caprolactam) (PVCL)-based thermoresponsive microgels decorated with cationic polymer brushes as drug delivery carriers. The effect of physico-chemical features of the colloids on cell viability response have to be carefully investigated to establish the range of suitable hydrodynamic diameters, crosslinking densities, lengths and ratios of the cationic polyelectrolyte shell which allow their efficient and effective use for cargo loading, transport and delivery. The colloidal stability of all cationic thermoresponsive microgels is maintained over several days of incubation at 37 °C in biological mimicking medium (Dulbecco's Modified Eagle's Medium supplemented with fetal bovine serum). The thin cationic polymer shell covalently anchored does not hinder the all range of microgels to be biocompatible while the higher cytotoxicity of the doxorubicin-loaded microgels on HeLa cells proves their anti-tumor activity. The core-shell PVCL drug delivery nanocarriers allow a sustained release of doxorubicin with a slightly higher viability of HeLa cells incubated in the presence of DOXO-loaded microgels compared to the free DOXO. The nature of the endocytosis pathway is investigated through a quantification of the extent of the cellular survival rate in the presence of various cellular uptake inhibitors. A clathrin-dependent internalization was observed.
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Affiliation(s)
- Laura Etchenausia
- CNRS, University Pau & Pays Adour, E2S UPPA, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux, IPREM, UMR5254, 64000 Pau, France; Bionanoparticles Group, Department of Applied Chemistry, University of the Basque Country UPV/EHU, Donostia-San Sebastián, Spain
| | - Eva Villar-Alvarez
- Condensed Matter Physics Department, Faculty of Physics, 15782 Campus Sur, Universidad de Santiago de Compostela, Santiago de Compostela, Spain
| | - Jacqueline Forcada
- Bionanoparticles Group, Department of Applied Chemistry, University of the Basque Country UPV/EHU, Donostia-San Sebastián, Spain
| | - Maud Save
- CNRS, University Pau & Pays Adour, E2S UPPA, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux, IPREM, UMR5254, 64000 Pau, France.
| | - Pablo Taboada
- Condensed Matter Physics Department, Faculty of Physics, 15782 Campus Sur, Universidad de Santiago de Compostela, Santiago de Compostela, Spain.
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Gumerov RA, Filippov SA, Richtering W, Pich A, Potemkin II. Amphiphilic microgels adsorbed at oil-water interfaces as mixers of two immiscible liquids. SOFT MATTER 2019; 15:3978-3986. [PMID: 31025694 DOI: 10.1039/c9sm00389d] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Amphiphilic microgels adsorbed at an oil-water interface were studied by means of dissipative particle dynamics (DPD) simulations. The hydrophobic (A) and hydrophilic (B) monomer units in the polymer network are considered to be randomly distributed. Effects of the crosslinking density, interfacial tension between the liquids, their selectivity as solvents towards species A and B, and the degree of incompatibility between the A and B units on the internal microgel structure and distribution of the liquids are considered. The most important predictions are that (i) two immiscible liquids can homogeneously be mixed within the microgels and (ii) the adsorbed microgels contain a high fraction of the liquids (they are swollen at the interface). Simultaneous fulfillment of these two conditions can have a high impact on the design of new and efficient catalytic systems. In particular, such microgels can mix immiscible reactants dissolved in water and oil and trigger chemical reactions in the presence of a catalyst embedded into the microgel.
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Affiliation(s)
- Rustam A Gumerov
- Physics Department, Lomonosov Moscow State University, Moscow 119991, Russian Federation.
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Marien YW, Van Steenberge PHM, Pich A, D'hooge DR. Coupled stochastic simulation of the chain length and particle size distribution in miniemulsion radical copolymerization of styrene and N-vinylcaprolactam. REACT CHEM ENG 2019. [DOI: 10.1039/c9re00218a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Kinetic Monte Carlo modeling is applied for the coupled simulation of the chain length and particle size distribution in isothermal batch miniemulsion copolymerization of styrene and N-vinylcaprolactam.
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Affiliation(s)
- Yoshi W. Marien
- Laboratory for Chemical Technology (LCT)
- Ghent University
- 9052 Zwijnaarde
- Belgium
- DWI – Leibniz Institute for Interactive Materials e.V
| | | | - Andrij Pich
- DWI – Leibniz Institute for Interactive Materials e.V
- 52074 Aachen
- Germany
- Institute of Technical and Macromolecular Chemistry
- RWTH Aachen University
| | - Dagmar R. D'hooge
- Laboratory for Chemical Technology (LCT)
- Ghent University
- 9052 Zwijnaarde
- Belgium
- Centre for Textile Science and Engineering (CTSE)
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Puertas-Bartolomé M, Vázquez-Lasa B, San Román J. Bioactive and Bioadhesive Catechol Conjugated Polymers for Tissue Regeneration. Polymers (Basel) 2018; 10:polym10070768. [PMID: 30960693 PMCID: PMC6403640 DOI: 10.3390/polym10070768] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 07/03/2018] [Accepted: 07/11/2018] [Indexed: 01/12/2023] Open
Abstract
The effective treatment of chronic wounds constitutes one of the most common worldwide healthcare problem due to the presence of high levels of proteases, free radicals and exudates in the wound, which constantly activate the inflammatory system, avoiding tissue regeneration. In this study, we describe a multifunctional bioactive and resorbable membrane with in-built antioxidant agent catechol for the continuous quenching of free radicals as well as to control inflammatory response, helping to promote the wound-healing process. This natural polyphenol (catechol) is the key molecule responsible for the mechanism of adhesion of mussels providing also the functionalized polymer with bioadhesion in the moist environment of the human body. To reach that goal, synthesized statistical copolymers of N-vinylcaprolactam (V) and 2-hydroxyethyl methacrylate (H) have been conjugated with catechol bearing hydrocaffeic acid (HCA) molecules with high yields. The system has demonstrated good biocompatibility, a sustained antioxidant response, an anti-inflammatory effect, an ultraviolet (UV) screen, and bioadhesion to porcine skin, all of these been key features in the wound-healing process. Therefore, these novel mussel-inspired materials have an enormous potential for application and can act very positively, favoring and promoting the healing effect in chronic wounds.
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Affiliation(s)
- María Puertas-Bartolomé
- Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain.
- CIBER's Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Health Institute Carlos III, C/Monforte de Lemos 3-5, Pabellón 11, 28029 Madrid, Spain.
| | - Blanca Vázquez-Lasa
- Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain.
- CIBER's Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Health Institute Carlos III, C/Monforte de Lemos 3-5, Pabellón 11, 28029 Madrid, Spain.
| | - Julio San Román
- Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain.
- CIBER's Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Health Institute Carlos III, C/Monforte de Lemos 3-5, Pabellón 11, 28029 Madrid, Spain.
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16
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Peng Z, Zhou P, Zhang F, Peng X. Preparation and Properties of Polyurethane Hydrogels Based on Hexamethylene Diisocyanate/Polycaprolactone-Polyethylene Glycol. J MACROMOL SCI B 2018. [DOI: 10.1080/00222348.2018.1439223] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Zhiyuan Peng
- Department of Chemistry, College of Chemistry and Chemical Engineering, Jishou University, Jishou, P. R. China
| | - Peng Zhou
- Department of Chemistry, College of Chemistry and Chemical Engineering, Jishou University, Jishou, P. R. China
| | - Fan Zhang
- Department of Chemistry, College of Chemistry and Chemical Engineering, Jishou University, Jishou, P. R. China
| | - Xiaochun Peng
- Department of Chemistry, College of Chemistry and Chemical Engineering, Jishou University, Jishou, P. R. China
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17
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Puertas-Bartolomé M, Fernández-Gutiérrez M, García-Fernández L, Vázquez-Lasa B, San Román J. Biocompatible and bioadhesive low molecular weight polymers containing long-arm catechol-functionalized methacrylate. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2017.11.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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18
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Naghibi S, Sahebi H. Employment of modified Fe3
O4
nanoparticles using thermo-sensitive polymer for extraction and pre-concentration of cefexime in biological samples. Biomed Chromatogr 2017; 32. [DOI: 10.1002/bmc.4082] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Revised: 07/10/2017] [Accepted: 08/16/2017] [Indexed: 12/31/2022]
Affiliation(s)
- Saman Naghibi
- Department of Biological Sciences; Birkbeck College, University of London; London UK
| | - Hamed Sahebi
- Department of Chemistry; Faculty of Science, Azad University Central Tehran Branch; Tehran Iran
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19
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Sevgili LM, Gök A, Kayman Ü, Çavuş S. Swelling behaviors of poly(dodecyl methacrylate-co-methyl eugenol) and poly(dodecyl methacrylate-co-methyl chavicol) gels in essential oil components. CHEMICAL PAPERS 2017. [DOI: 10.1007/s11696-017-0130-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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20
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Fabrication of thermo-responsive cotton fabrics using poly(vinyl caprolactam-co-hydroxyethyl acrylamide) copolymer. Carbohydr Polym 2017; 174:626-632. [PMID: 28821113 DOI: 10.1016/j.carbpol.2017.06.092] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 06/16/2017] [Accepted: 06/22/2017] [Indexed: 11/21/2022]
Abstract
A thermo-responsive polymer with hydrophilic to hydrophobic transition behavior, poly(vinyl caprolactam-co-hydroxyethyl acrylamide) P(VCL-co-HEAA), was prepared by copolymerization of vinyl caprolactam and N-hydroxyethyl acrylamide via free radical solution polymerization. The resulting copolymer was characterized by Fourier transform infrared spectroscopy (FTIR), 1H nuclear magnetic resonance (NMR), gel permeation chromatography (GPC), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). The lower critical solution temperature (LCST) of P(VCL-co-HEAA) was determined at 34.5°C. This thermo-responsive polymer was then grafted onto cotton fabrics using 1,2,3,4-butanetetracarboxylic acid (BTCA) as crosslinker and sodium hypophosphite (SHP) as catalyst. FTIR and energy dispersive X-ray spectroscopy (EDS) studies confirmed the successful grafting reaction. The modified cotton fabric exhibited thermo-responsive behavior as evidenced by water vapor permeability measurement confirming decreased permeability at elevated temperature. This is the first demonstration that a PVCL based copolymer is grafted to cotton fabrics. This study provides a new thermo-responsive polymer for fabrication of smart cotton fabrics with thermally switchable hydrophilicity.
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21
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Medeiros SF, Lopes MV, Rossi-Bergmann B, Ré MI, Santos AM. Synthesis and characterization of poly(N-vinylcaprolactam)-based spray-dried microparticles exhibiting temperature and pH-sensitive properties for controlled release of ketoprofen. Drug Dev Ind Pharm 2017; 43:1519-1529. [DOI: 10.1080/03639045.2017.1321660] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Simone F. Medeiros
- Chemical Engineering Department, Engineering School of Lorena, University of São Paulo, Lorena, Brazil
| | - Milene V. Lopes
- Laboratory of Immunopharmacology (IBiof), Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Bartira Rossi-Bergmann
- Laboratory of Immunopharmacology (IBiof), Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Maria Inês Ré
- Mines Albi, UMR-CNRS 5302, Centre RAPSODEE, Université de Toulouse, Campus Jarlard, Albi, France
| | - Amilton M. Santos
- Chemical Engineering Department, Engineering School of Lorena, University of São Paulo, Lorena, Brazil
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22
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González E, Frey MW. Synthesis, characterization and electrospinning of poly(vinyl caprolactam-co-hydroxymethyl acrylamide) to create stimuli-responsive nanofibers. POLYMER 2017. [DOI: 10.1016/j.polymer.2016.11.053] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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23
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Cortez-Lemus NA, Licea-Claverie A. Poly(N-vinylcaprolactam), a comprehensive review on a thermoresponsive polymer becoming popular. Prog Polym Sci 2016. [DOI: 10.1016/j.progpolymsci.2015.08.001] [Citation(s) in RCA: 240] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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24
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Góis JR, Costa JRC, Popov AV, Serra AC, Coelho JFJ. Synthesis of well-defined alkyne terminated poly( N-vinyl caprolactam) with stringent control over the LCST by RAFT. RSC Adv 2016; 6:16996-17007. [PMID: 27019706 PMCID: PMC4803047 DOI: 10.1039/c6ra01014h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The reversible addition-fragmentation chain transfer (RAFT) of N-vinyl caprolactam (NVCL) using two new xanthates with alkyne functionalities is reported. The kinetic data obtained for polymerization of this non-activated monomer using a protected alkyne-terminated RAFT agent (PAT-X1) revealed a linear increase of the polymer molecular weight with the monomer conversion as well as low dispersity (Đ) during the entire course of the polymerization. The system reported here allowed us to enhance the final conversion, diminish Đ and reduce the polymerization temperature compared to the typical values reported in the scarce literature available for the RAFT polymerization of NVCL. The resulting PNVCL was fully characterized using 1H nuclear magnetic resonance (1H NMR), matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF-MS), Fourier-transform infrared spectroscopy (FTIR) and gel permeation chromatography (GPC) techniques. The temperature-responsive features of PNVCL in aqueous solutions were fully investigated under different conditions using turbidimetry. The presented strategy allows the synthesis of well-defined PNVCL with sharp and reversible phase transition temperatures around 37 °C. By manipulating the polymer molecular weight, or the solution properties, it is possible to tune the PNVCL phase transition. As a proof-of concept, the alkyne functionalized PNVCL was used to afford new linear block copolymers, by reacting with an azide-terminated poly(ethylene glycol) (N3-PEG) through the copper catalyzed azide-alkyne [3+2] dipolar cycloaddition (CuAAC) reaction. The results presented establish a robust system to afford the synthesis of PNCVL with fine tuned characteristics that will enable more efficient exploration of the remarkable potential of this polymer in biomedical applications.
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Affiliation(s)
- Joana R Góis
- CEMUC, Department of Chemical Engineering, University of Coimbra, Polo II, Rua Sílvio Lima, 3030-790 Coimbra, Portugal. ; Tel:+351 239 798 744;
| | - João R C Costa
- CEMUC, Department of Chemical Engineering, University of Coimbra, Polo II, Rua Sílvio Lima, 3030-790 Coimbra, Portugal. ; Tel:+351 239 798 744;
| | - Anatoliy V Popov
- Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104, United States
| | - Arménio C Serra
- CEMUC, Department of Chemical Engineering, University of Coimbra, Polo II, Rua Sílvio Lima, 3030-790 Coimbra, Portugal. ; Tel:+351 239 798 744;
| | - Jorge F J Coelho
- CEMUC, Department of Chemical Engineering, University of Coimbra, Polo II, Rua Sílvio Lima, 3030-790 Coimbra, Portugal. ; Tel:+351 239 798 744;
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25
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N-vinylcaprolactam-based microgels: synthesis, characterization and drug release applications. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2422-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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26
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Tang G, Hu M, Ma Y, You D, Bi Y. Synthesis and solution properties of novel thermo- and pH-responsive poly(N-vinylcaprolactam)-based linear–dendritic block copolymers. RSC Adv 2016. [DOI: 10.1039/c6ra04327e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
This study describes the synthesis and solution properties of the novel linear–dendritic block copolymers (LDBCs) based on thermoresponsive poly(N-vinylcaprolactam) (PNVCL) chains and pH-responsive poly(benzyl ether) dendrons.
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Affiliation(s)
- Gang Tang
- College of Chemistry and Chemical Engineering
- Yunnan Normal University
- Kunming 650500
- China
| | - Minqi Hu
- College of Chemistry and Chemical Engineering
- Yunnan Normal University
- Kunming 650500
- China
| | - Yongcui Ma
- College of Chemistry and Chemical Engineering
- Yunnan Normal University
- Kunming 650500
- China
| | - Dan You
- College of Chemistry and Chemical Engineering
- Yunnan Normal University
- Kunming 650500
- China
| | - Yunmei Bi
- College of Chemistry and Chemical Engineering
- Yunnan Normal University
- Kunming 650500
- China
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27
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Peng H, Xu W, Pich A. Temperature and pH dual-responsive poly(vinyl lactam) copolymers functionalized with amine side groups via RAFT polymerization. Polym Chem 2016. [DOI: 10.1039/c6py00885b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A series of statistical copolymers based on cyclic N-vinyl lactams and N-vinylformamide were synthesized via RAFT polymerization. Tempertaure/pH dual responsive polymers were obtained via hydrolysis the copolymers in alkaline conditions.
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Affiliation(s)
- Huan Peng
- Functional and Interactive Polymers
- Institute of Technical and Macromolecular Chemistry
- RWTH Aachen University
- D-52074 Aachen
- Germany
| | - Wenjing Xu
- Functional and Interactive Polymers
- Institute of Technical and Macromolecular Chemistry
- RWTH Aachen University
- D-52074 Aachen
- Germany
| | - Andrij Pich
- Functional and Interactive Polymers
- Institute of Technical and Macromolecular Chemistry
- RWTH Aachen University
- D-52074 Aachen
- Germany
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28
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González-Ayón MA, Sañudo-Barajas JA, Picos-Corrales LA, Licea-Claverie A. PNVCL-PEGMA nanohydrogels with tailored transition temperature for controlled delivery of 5-fluorouracil. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27766] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Mirian A. González-Ayón
- Centro de Investigación en Alimentación y Desarrollo A. C; Unidad Culiacán, A.P. 32-A 80110 Culiacán Sinaloa México
| | - J. Adriana Sañudo-Barajas
- Centro de Investigación en Alimentación y Desarrollo A. C; Unidad Culiacán, A.P. 32-A 80110 Culiacán Sinaloa México
| | - Lorenzo A. Picos-Corrales
- Universidad Autónoma de Sinaloa, Facultad de Ciencias Químico Biológicas, Ciudad Universitaria; 80013 Culiacán Sinaloa México
| | - Angel Licea-Claverie
- Instituto Tecnológico de Tijuana, Centro de Graduados e Investigación en Química; A.P. 1166 22000 Tijuana B.C. México
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29
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Zheng Z, Tian X, Sun J, Yuan Y, Xie B. Studies of latex blends of natural rubber/poly(methyl methacrylate-co-2-ethylhexyl methacrylate) and their comparison with incompatible natural rubber/poly(methyl methacrylate). POLYMER SCIENCE SERIES A 2015. [DOI: 10.1134/s0965545x15050181] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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30
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Yu Z, Gu H, Tang D, Lv H, Ren Y, Gu S. Fabrication of PVCL-co-PMMA nanofibers with tunable volume phase transition temperatures and maintainable shape for anti-cancer drug release. RSC Adv 2015. [DOI: 10.1039/c5ra10808j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Thermo responsive PVCL-co-PMMA nanofibers for controlled release of anticancer drugs were fabricated. The thermo response temperatures of the nanofibers could be easily tuned, and the fibrous shapes could be maintained after heating–cooling cycles.
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Affiliation(s)
- Zaiqian Yu
- Department of Chemistry
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Hongjuan Gu
- Northeast Branch
- China State Institute of Pharmaceutical Industry
- Changchun 130012
- China
- Sinopharm A-think Pharmaceutical Co. Ltd
| | - Dongyan Tang
- Department of Chemistry
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Haitao Lv
- Department of Chemistry
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Yonghui Ren
- Zhejiang Davi Pharmaceutical Co., Ltd
- Huzhou
- China
| | - Shuo Gu
- Department of Electrical and Computer Engineering
- The George Washington University
- Washington
- USA
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31
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Pal J, Deb MK, Deshmukh DK. Removal of phenol in aqueous solution by adsorption onto green synthesized coinage nanoparticles beads. RESEARCH ON CHEMICAL INTERMEDIATES 2014. [DOI: 10.1007/s11164-014-1898-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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32
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Wu Q, Zhou D, Kang R, Tang X, Yang Q, Song X, Zhang G. Synthesis and Self-Assembly of Thermoresponsive Amphiphilic Biodegradable Polypeptide/Poly(ethyl ethylene phosphate) Block Copolymers. Chem Asian J 2014; 9:2850-8. [DOI: 10.1002/asia.201402524] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Indexed: 12/13/2022]
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33
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Bian S, Zheng J, Yang W. Dual stimuli-responsive microgels based on photolabile crosslinker: Temperature sensitivity and light-induced degradation. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/pola.27165] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Shanshan Bian
- State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science; Fudan University; No. 220 Handan Road Shanghai 200433 People's Republic of China
| | - Jin Zheng
- State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science; Fudan University; No. 220 Handan Road Shanghai 200433 People's Republic of China
| | - Wuli Yang
- State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science; Fudan University; No. 220 Handan Road Shanghai 200433 People's Republic of China
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34
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Comparative thermodynamic study of functional polymeric latex particles with different morphologies. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2013.12.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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35
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Efficient adsorption of congo red dye from aqueous solution using green synthesized coinage nanoparticles coated activated carbon beads. APPLIED NANOSCIENCE 2013. [DOI: 10.1007/s13204-013-0277-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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36
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Synthesis and self-assembly of new amphiphilic thermosensitive poly(N-vinylcaprolactam)/poly(ε-caprolactone) block copolymers via the combination of ring-opening polymerization and click chemistry. JOURNAL OF POLYMER RESEARCH 2013. [DOI: 10.1007/s10965-013-0262-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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37
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Wu Q, Wang L, Fu X, Song X, Yang Q, Zhang G. Synthesis and self-assembly of a new amphiphilic thermosensitive poly(N-vinylcaprolactam)/poly(ε-caprolactone) block copolymer. Polym Bull (Berl) 2013. [DOI: 10.1007/s00289-013-1041-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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38
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Wang Y, Nie J, Chang B, Sun Y, Yang W. Poly(vinylcaprolactam)-Based Biodegradable Multiresponsive Microgels for Drug Delivery. Biomacromolecules 2013; 14:3034-46. [DOI: 10.1021/bm401131w] [Citation(s) in RCA: 133] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Yang Wang
- State Key Laboratory of Molecular
Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai 200433, P. R. China
| | - Jinshan Nie
- Department of Gastroenterology, Taicang No.1 People Hospital, the Affiliated Hospital
of Soochow University, Taicang 215400, Jiangsu Province, P.R. China
| | - Baisong Chang
- State Key Laboratory of Molecular
Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai 200433, P. R. China
| | - Yangfei Sun
- State Key Laboratory of Genetic
Engineering and School of Life Sciences, Fudan University, Shanghai, 200433, China
| | - Wuli Yang
- State Key Laboratory of Molecular
Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai 200433, P. R. China
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39
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Microwave-assisted synthesis of silver nanoparticles using benzo-18-crown-6 as reducing and stabilizing agent. APPLIED NANOSCIENCE 2013. [DOI: 10.1007/s13204-013-0229-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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40
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Bi Y, Yan C, Shao L, Wang Y, Ma Y, Tang G. Well-defined thermoresponsive dendritic polyamide/poly(N
-vinylcaprolactam) block copolymers. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26716] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Yunmei Bi
- Department of Medicinal Chemistry; College of Chemistry and Chemical Engineering, Yunnan Normal University; Kunming 650092 People's Republic of China
| | - Caixian Yan
- Department of Medicinal Chemistry; College of Chemistry and Chemical Engineering, Yunnan Normal University; Kunming 650092 People's Republic of China
| | - Lidong Shao
- Department of Medicinal Chemistry; College of Chemistry and Chemical Engineering, Yunnan Normal University; Kunming 650092 People's Republic of China
| | - Yufei Wang
- Department of Medicinal Chemistry; College of Chemistry and Chemical Engineering, Yunnan Normal University; Kunming 650092 People's Republic of China
| | - Yongcui Ma
- Department of Medicinal Chemistry; College of Chemistry and Chemical Engineering, Yunnan Normal University; Kunming 650092 People's Republic of China
| | - Gang Tang
- Department of Medicinal Chemistry; College of Chemistry and Chemical Engineering, Yunnan Normal University; Kunming 650092 People's Republic of China
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41
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42
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de Oliveira V, de Morais W, Pereira M, Fonseca J. Dynamic light scattering in semidilute and concentrated chitosan solutions. Eur Polym J 2012. [DOI: 10.1016/j.eurpolymj.2012.07.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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43
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Deen GR, Lim EK, Mah CH, Heng KM. New Cationic Linear Copolymers and Hydrogels of N-Vinyl Caprolactam and N-Acryloyl-N′-ethyl Piperazine: Synthesis, Reactivity, Influence of External Stimuli on the LCST and Swelling Properties. Ind Eng Chem Res 2012. [DOI: 10.1021/ie301987m] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- G. Roshan Deen
- Soft Materials Laboratory,
Natural
Sciences and Science Education, National Institute of Education, Nanyang Technological University, 1-Nanyang Walk, Singapore
637616
| | - Eu Kiat Lim
- School of Physical
and Mathematical
Sciences, Nanyang Technological University, 21-Nanyang Link, Singapore 637371
| | - Chin Hao Mah
- School of Physical
and Mathematical
Sciences, Nanyang Technological University, 21-Nanyang Link, Singapore 637371
| | - Kuang Meng Heng
- Soft Materials Laboratory,
Natural
Sciences and Science Education, National Institute of Education, Nanyang Technological University, 1-Nanyang Walk, Singapore
637616
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44
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Synthesis and micellar characterization of thermosensitive amphiphilic poly(ε-caprolactone)-b-poly(N-vinylcaprolactam) block copolymers. Colloid Polym Sci 2012. [DOI: 10.1007/s00396-012-2630-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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45
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Targeted, Multifunctional Hydrogel Nanoparticles for Imaging and Treatment of Cancer. NANOSTRUCTURE SCIENCE AND TECHNOLOGY 2012. [DOI: 10.1007/978-1-4614-2305-8_11] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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46
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Crespy D, Zuber S, Turshatov A, Landfester K, Popa AM. A straightforward synthesis of fluorescent and temperature-responsive nanogels. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.25875] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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47
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48
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Song MM, Branford-White C, Nie HL, Zhu LM. Optimization of adsorption conditions of BSA on thermosensitive magnetic composite particles using response surface methodology. Colloids Surf B Biointerfaces 2011; 84:477-83. [DOI: 10.1016/j.colsurfb.2011.02.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2010] [Revised: 12/11/2010] [Accepted: 02/01/2011] [Indexed: 10/18/2022]
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49
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Ieong NS, Redhead M, Bosquillon C, Alexander C, Kelland M, O’Reilly RK. The Missing Lactam-Thermoresponsive and Biocompatible Poly(N-vinylpiperidone) Polymers by Xanthate-Mediated RAFT Polymerization. Macromolecules 2011. [DOI: 10.1021/ma1026466] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nga Sze Ieong
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U.K
| | - Martin Redhead
- School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - Cynthia Bosquillon
- School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - Cameron Alexander
- School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - Malcolm Kelland
- Department of Mathematics and Natural Sciences, Faculty of Science and Technology, University of Stavanger, 4036 Stavanger, Norway
| | - Rachel K. O’Reilly
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U.K
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