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Self-healing and super-elastomeric polyMEA-co-SMA nanocomposites crosslinked by clay platelets
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SYSNO ASEP 0562761 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Self-healing and super-elastomeric polyMEA-co-SMA nanocomposites crosslinked by clay platelets Author(s) Strachota, Beata (UMCH-V) RID
Strachota, Adam (UMCH-V) RID, ORCID
Byś, Katarzyna (UMCH-V)
Pavlova, Ewa (UMCH-V) RID
Hodan, Jiří (UMCH-V)
Mossety-Leszczak, B. (PL)Article number 657 Source Title Gels. - : MDPI
Roč. 8, č. 10 (2022)Number of pages 31 s. Language eng - English Country CH - Switzerland Keywords nanocomposites ; super-elastomers ; self-healing Subject RIV CD - Macromolecular Chemistry OECD category Polymer science Method of publishing Open access Institutional support UMCH-V - RVO:61389013 UT WOS 000875303600001 EID SCOPUS 85140628724 DOI 10.3390/gels8100657 Annotation Novel solvent-free ultra-extensible, tough, and self-healing nanocomposite elastomers were synthesized. The self-assembled materials were based on the copolymer matrix poly(methoxyethyl acrylate-co-sodium methacrylate) physically crosslinked by clay nano-platelets (‘poly[MEA-co-SMA]/clay’). Depending on the content of SMA, the super-elastomers were predominantly hydrophobic, water-swelling, or fully water-soluble, and hence repeatedly processible. The SMA co-monomer introduces a tremendous increase in tensile strength, an increase in toughness, while ultra-extensibility is preserved. By tuning the contents of nano-clay and SMA co-monomer, a very wide range of product properties was achieved, including extreme ultra-extensibility, or high stiffness combined with more moderate super-extensibility, or very different values of tensile strength. There was very attractive, great improvement in autonomous self-healing ability induced by SMA, combined with tremendously enhanced self-recovery of internal mechanical damage: even complete self-recovery could be achieved. The ionic SMA repeat units were found to assemble to multiplets, which are phase-separated in the hydrophobic polyMEA matrix. The dynamics of SMA-units-hopping between these aggregates was of key importance for the mechanical, visco-elastic, tensile, and self-healing properties. The studied super-elastomers are attractive as advanced self-healing materials in engineering, soft robotics, and in medical or implant applications. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2023 Electronic address https://www.mdpi.com/2310-2861/8/10/657
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