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Ultra‐extensible solvent‐free elastomers based on nanocomposite poly(2‐methoxyethylacrylate)/clay xerogels
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SYSNO ASEP 0534425 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Ultra‐extensible solvent‐free elastomers based on nanocomposite poly(2‐methoxyethylacrylate)/clay xerogels Author(s) Strachota, Beata (UMCH-V) RID
Strachota, Adam (UMCH-V) RID, ORCID
Steinhart, Miloš (UMCH-V) RID
Šlouf, Miroslav (UMCH-V) RID, ORCID
Hodan, Jiří (UMCH-V)Article number e49836 Source Title Journal of Applied Polymer Science. - : Wiley - ISSN 0021-8995
Roč. 138, č. 7 (2021)Number of pages 24 s. Language eng - English Country US - United States Keywords elastomers ; nanoparticles ; nanowires Subject RIV CD - Macromolecular Chemistry OECD category Polymer science R&D Projects GA19-04925S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UMCH-V - RVO:61389013 UT WOS 000562917900001 EID SCOPUS 85089868663 DOI 10.1002/app.49836 Annotation Physically cross‐linked solvent‐free supramolecularly assembled nanocomposite elastomers were prepared, which displayed exceptionally high extensibility (up to 6000%), besides generally high mechanical properties (G' in rubber region between 1.5 and 40 MPa). The nanocomposites are based on linear poly(2‐methoxyethylacrylate) (polyMEA) and montmorillonite clay (physical cross‐linker), and were obtained via free‐radical polymerization of the monomer in the presence of the exfoliated nanofiller dispersed in water. The mechanical properties of the studied products were varied in a very wide range by changing the concentrations of the radical redox co‐initiator pair, at given constant nanofiller loadings. The latter in turn also strongly altered the product properties. This applied synthesis approach, aimed at obtaining longer elastic chains, made possible to increase the elongation at break up to six times, and also to tremendously and simultaneously increase the toughness (effect of entanglements), as well as to shift the tensile curves between “plastic‐like elastomer” and “simple elastomer.” In all cases, however, the nanocomposite samples displayed a highly efficient recovery, even after very high deformations. The structure–property relationships were deeper elucidated by thermo‐mechanical analysis (DMTA), TGA (thermal stability, elastic chains' immobilization), TEM and X‐ray diffraction. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2022 Electronic address https://onlinelibrary.wiley.com/doi/10.1002/app.49836
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