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Nanocellulose bio-based composites for the removal of methylene blue from water: An experimental and theoretical exploration. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Bora D, Jayaramudu J, Saikia P, Bohra RC, Phukan L, S PS, Ray SS, Sadiku E. Effect of boehmite alumina nanoparticles on the physical and chemical characteristics of eco-friendly sodium alginate/polyvinyl alcohol bio-nanocomposite film. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2022. [DOI: 10.1080/1023666x.2022.2061749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Dipjyoti Bora
- Polymer, Petroleum and Coal Chemistry Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, India
- Academy of Scientific and Innovative Research, (AcSIR) Ghaziabad, India
| | - J. Jayaramudu
- Polymer, Petroleum and Coal Chemistry Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, India
- Academy of Scientific and Innovative Research, (AcSIR) Ghaziabad, India
| | - Prasenjit Saikia
- Polymer, Petroleum and Coal Chemistry Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, India
- Academy of Scientific and Innovative Research, (AcSIR) Ghaziabad, India
| | - Ramesh C. Bohra
- Polymer, Petroleum and Coal Chemistry Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, India
- Academy of Scientific and Innovative Research, (AcSIR) Ghaziabad, India
| | - Lachit Phukan
- Polymer, Petroleum and Coal Chemistry Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, India
- Academy of Scientific and Innovative Research, (AcSIR) Ghaziabad, India
| | - Periyar Selvam S
- Department of Food Process Engineering, Postharvest Research Lab, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, India
| | - S. S. Ray
- Centre for Nanostructures and Advanced Materials, DSI-CSIR Nanotechnology Innovation Centre, Council for Scientific and Industrial Research, Pretoria, South Africa
| | - E.R. Sadiku
- Tshwane University of Technology, Department of Chemical, Metallurgical and Materials Engineering (Polymer Division), Pretoria, South Africa
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Synthesis and Appraisal of Natural Drug-Polymer-Based Matrices Relevant to the Application of Drug-Eluting Coronary Stent Coatings. Cardiol Res Pract 2020; 2020:4073091. [PMID: 33282417 PMCID: PMC7685865 DOI: 10.1155/2020/4073091] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 10/15/2020] [Accepted: 10/28/2020] [Indexed: 11/17/2022] Open
Abstract
Cardiovascular diseases are becoming a leading cause of death in the world, and attention is being paid to develop natural drug-based treatment to cure heart diseases. Curcumin, ginger, and magnolol are pharmaceutically active in many ways, having properties including anticoagulation, antiproliferation, anti-inflammatory, and antioxidant, and may be used to synthesis coatings for drug-eluting stents to treat cardiovascular diseases. In the present investigation, a degradable polymer with varying molecular weights was used as a drug carrier to control the degradation of polymer; three different natural drugs such as curcumin, magnolol, and ginger were used owing to their reported pharmacological properties. The results of in vitro measurements of all three natural drugs released from drug-loaded polymeric films showed an initial burst release followed by a sustained release for up to 38 days of measurement. On the other hand, different levels of hemocompatibility were observed by varying concentrations of natural drugs in human erythrocytes. As per the ASTM F756 standard, ginger having low concentration showed optimum hemocompatibility with regard to the drug-eluting stent application as compared with magnolol and curcumin concentrations, which showed suboptimal hemocompatibility and fall in the range of mild-to-severe blood toxicity category. The structure of the coating films was characterized by Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM) with results suggesting that there was no chemical bonding between the polymer and drug. Thus, according to this study, it can be concluded that after more detailed in vitro testing such as hemocompatibility tests and platelet adhesion testing, ginger can be a better candidate as a drug-coating material for drug-eluting stent applications.
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Li Q, Tang Y, Yan Z, Zhang P. Identification of trace additives in polymer materials by attenuated total reflection Fourier transform infrared mapping coupled with multivariate curve resolution. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 180:154-160. [PMID: 28284161 DOI: 10.1016/j.saa.2017.03.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Revised: 02/13/2017] [Accepted: 03/05/2017] [Indexed: 06/06/2023]
Abstract
Although multivariate curve resolution (MCR) has been applied to the analysis of Fourier transform infrared (FTIR) imaging, it is still problematic to determine the number of components. The reported methods at present tend to cause the components of low concentration missed. In this paper a new idea was proposed to resolve this problem. First, MCR calculation was repeated by increasing the number of components sequentially, then each retrieved pure spectrum of as-resulted MCR component was directly compared with a real-world pixel spectrum of the local high concentration in the corresponding MCR map. One component was affirmed only if the characteristic bands of the MCR component had been included in its pixel spectrum. This idea was applied to attenuated total reflection (ATR)/FTIR mapping for identifying the trace additives in blind polymer materials and satisfactory results were acquired. The successful demonstration of this novel approach opens up new possibilities for analyzing additives in polymer materials.
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Affiliation(s)
- Qian Li
- State Key Laboratory of Chemical Resource Engineering, Analysis and Test Center, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yongjiao Tang
- State Key Laboratory of Chemical Resource Engineering, Analysis and Test Center, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhiwei Yan
- State Key Laboratory of Chemical Resource Engineering, Analysis and Test Center, Beijing University of Chemical Technology, Beijing 100029, China
| | - Pudun Zhang
- State Key Laboratory of Chemical Resource Engineering, Analysis and Test Center, Beijing University of Chemical Technology, Beijing 100029, China.
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Lu Y, Xu N, Lv Y, Feng Y. Fibrous material based on a combination of poly(acrylic acid-co
-hydroxyethyl methacrylate) with iron ions as a heterogeneous Fenton catalyst for dye oxidative decomposition. J Appl Polym Sci 2017. [DOI: 10.1002/app.44875] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yuyao Lu
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering; Tianjin Polytechnic University; Tianjin 300387 China
| | - Naiku Xu
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering; Tianjin Polytechnic University; Tianjin 300387 China
| | - Yuanyuan Lv
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Textiles; Tianjin Polytechnic University; Tianjin 300387 China
| | - Yan Feng
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Textiles; Tianjin Polytechnic University; Tianjin 300387 China
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Tang Y, Jing N, Zhang P. Attenuated Total Reflection Fourier Transform Infrared Spectroscopy (ATR FT-IR) Mapping Coupled with Multivariate Curve Resolution (MCR) for Studying the Miscibility of Chlorobutyl Rubber/Polyamide-12 Blends. APPLIED SPECTROSCOPY 2015; 69:1319-1326. [PMID: 26647055 DOI: 10.1366/14-07721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A series of chlorobutyl rubber/polyamide-12 (CIIR/PA-12) blends compatibilized by different amounts of maleic anhydride (MAH) grafted polypropylene (PP-g-MAH) were investigated by attenuated total reflection Fourier transform infrared spectroscopy (ATR FT-IR) mapping. Multivariate curve resolution (MCR) was used to process the FT-IR images. Both the spectra of pure components in the blends and their concentration distributions in a micro-region were acquired. Our results demonstrated that the blend with 15 parts per hundred rubber PP-g-MAH showed the best miscibility. An amide interphase and an imide interphase were inferred by analyzing the spectra of MCR component 3 of the blends with and without PP-g-MAH, respectively. Correspondingly, two different compatibilizing mechanisms were proposed for these blends.
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Affiliation(s)
- Yongjiao Tang
- State Key Laboratory of Chemical Resource Engineering, Analysis and Test Center, Beijing University of Chemical Technology, Beijing 100029, China
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Feldman D. Polyblend Nanocomposites. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2015. [DOI: 10.1080/10601325.2015.1050638] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Hakalahti M, Salminen A, Seppälä J, Tammelin T, Hänninen T. Effect of interfibrillar PVA bridging on water stability and mechanical properties of TEMPO/NaClO2 oxidized cellulosic nanofibril films. Carbohydr Polym 2015; 126:78-82. [PMID: 25933525 DOI: 10.1016/j.carbpol.2015.03.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 03/03/2015] [Accepted: 03/04/2015] [Indexed: 11/16/2022]
Abstract
TEMPO/NaClO2 oxidized cellulosic nanofibrils (TCNF) were covalently bonded with poly(vinyl alcohol) (PVA) to render water stable films. Pure TCNF films and TCNF-PVA films in dry state showed similar humidity dependent behavior in the elastic region. However, in wet films PVA had a significant effect on stability and mechanical characteristics of the films. When soaked in water, pure TCNF films exhibited strong swelling behavior and poor wet strength, whereas covalently bridged TCNF-PVA composite films remained intact and could easily be handled even after 24h of soaking. Wet tensile strength of the films was considerably enhanced with only 10 wt% PVA addition. At 25% PVA concentration wet tensile strengths were decreased and films were more yielding. This behavior is attributed to the ability of PVA to reinforce and plasticize TCNF-based films. The developed approach is a simple and straightforward method to produce TCNF films that are stable in wet conditions.
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Affiliation(s)
- Minna Hakalahti
- VTT Technical Research Centre of Finland, VTT, PO Box 1000, FIN-02044 Espoo, Finland.
| | - Arto Salminen
- Polymer Technology, Department of Biotechnology and Chemical Technology, Aalto University School of Chemical Technology, Aalto, PO Box 16100, FIN-00076 Espoo, Finland.
| | - Jukka Seppälä
- Polymer Technology, Department of Biotechnology and Chemical Technology, Aalto University School of Chemical Technology, Aalto, PO Box 16100, FIN-00076 Espoo, Finland.
| | - Tekla Tammelin
- VTT Technical Research Centre of Finland, VTT, PO Box 1000, FIN-02044 Espoo, Finland.
| | - Tuomas Hänninen
- VTT Technical Research Centre of Finland, VTT, PO Box 1000, FIN-02044 Espoo, Finland.
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Liu Y, Zhang R, Wang X, Sun P, Chen W, Shen J, Xue G. The strong interaction between poly(vinyl chloride) and a new eco-friendly plasticizer: A combined experiment and calculation study. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.04.037] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Opportunities for live cell FT-infrared imaging: macromolecule identification with 2D and 3D localization. Int J Mol Sci 2013; 14:22753-81. [PMID: 24256815 PMCID: PMC3856089 DOI: 10.3390/ijms141122753] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 10/31/2013] [Accepted: 11/01/2013] [Indexed: 12/22/2022] Open
Abstract
Infrared (IR) spectromicroscopy, or chemical imaging, is an evolving technique that is poised to make significant contributions in the fields of biology and medicine. Recent developments in sources, detectors, measurement techniques and speciman holders have now made diffraction-limited Fourier transform infrared (FTIR) imaging of cellular chemistry in living cells a reality. The availability of bright, broadband IR sources and large area, pixelated detectors facilitate live cell imaging, which requires rapid measurements using non-destructive probes. In this work, we review advances in the field of FTIR spectromicroscopy that have contributed to live-cell two and three-dimensional IR imaging, and discuss several key examples that highlight the utility of this technique for studying the structure and chemistry of living cells.
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Properties of novel polyvinyl alcohol/cellulose nanocrystals/silver nanoparticles blend membranes. Carbohydr Polym 2013; 98:1573-7. [DOI: 10.1016/j.carbpol.2013.07.065] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Revised: 06/30/2013] [Accepted: 07/26/2013] [Indexed: 11/23/2022]
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