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Poly(N-isopropylacrylamide)-clay hydrogels: control of mechanical properties and structure by the initiating conditions of polymerization
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SYSNO ASEP 0458840 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Poly(N-isopropylacrylamide)-clay hydrogels: control of mechanical properties and structure by the initiating conditions of polymerization Author(s) Strachota, Beata (UMCH-V) RID
Hodan, Jiří (UMCH-V)
Matějka, Libor (UMCH-V) RIDSource Title European Polymer Journal. - : Elsevier - ISSN 0014-3057
Roč. 77, April (2016), s. 1-15Number of pages 15 s. Language eng - English Country GB - United Kingdom Keywords polymer-clay hydrogel ; thermoresponsive hydrogel ; nanocomposite Subject RIV CD - Macromolecular Chemistry R&D Projects GAP108/12/1459 GA ČR - Czech Science Foundation (CSF) LD14010 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UMCH-V - RVO:61389013 UT WOS 000373657900001 EID SCOPUS 84958758682 DOI 10.1016/j.eurpolymj.2016.02.011 Annotation The mechanical properties of the poly(N-isopropylacrylamide) (PNIPA)–clay gels are efficiently controlled by the initiating conditions of the polymerization. The concentration and composition of the redox initiating system, initiator ammonium peroxodisulfate (APS) and activator tetramethylethylenediamine (TEMED), are found to be crucial in the gel synthesis, governing not only the polymerization process, but also the gel structure and mechanical properties. For the description of mechanical properties of nanocomposite gels, the combination of the theory of elasticity with the model of mechanical properties of composites is applied, because the incorporated clay serves both as a crosslinker and as reinforcing nanofiller. Based on this approach, the complex mechanical behavior of the gels is described and the experimental data are explained, including the effect of clay, monomer and the initiators. The results contribute to the elucidation of the relationships between formation, structure and mechanical properties of the nanocomposite gels. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2017
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