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Novel tough and transparent ultra-extensible nanocomposite elastomers based on poly(2-methoxyethylacrylate) and their switching between plasto-elasticity and viscoelasticity
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SYSNO ASEP 0550080 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Novel tough and transparent ultra-extensible nanocomposite elastomers based on poly(2-methoxyethylacrylate) and their switching between plasto-elasticity and viscoelasticity Tvůrce(i) Byś, Katarzyna (UMCH-V)
Strachota, Beata (UMCH-V) RID
Strachota, Adam (UMCH-V) RID, ORCID
Pavlova, Ewa (UMCH-V) RID
Steinhart, Miloš (UMCH-V) RID
Mossety-Leszczak, B. (PL)
Zajac, W. (PL)Číslo článku 4254 Zdroj.dok. Polymers. - : MDPI
Roč. 13, č. 23 (2021)Poč.str. 32 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova nanocomposites ; transparent ; physical networks Vědní obor RIV CD - Makromolekulární chemie Obor OECD Polymer science CEP GA19-04925S GA ČR - Grantová agentura ČR TN01000008 GA TA ČR - Technologická agentura ČR Způsob publikování Open access Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000734377600001 EID SCOPUS 85121330383 DOI 10.3390/polym13234254 Anotace Novel stiff, tough, highly transparent and ultra-extensible self-assembled nanocomposite elastomers based on poly(2-methoxyethylacrylate) (polyMEA) were synthesized. The materials are physically crosslinked by small in-situ-formed silica nanospheres, sized 3–5 nm, which proved to be a very efficient macro-crosslinker in the self-assembled network architecture. Very high values of yield stress (2.3 MPa), tensile strength (3.0 MPa), and modulus (typically 10 MPa), were achieved in combination with ultra-extensibility: the stiffest sample was breaking at 1610% of elongation. Related nanocomposites doubly filled with nano-silica and clay nano-platelets were also prepared, which displayed interesting synergy effects of the fillers at some compositions. All the nanocomposites exhibit ‘plasto-elastic’ tensile behaviour in the ‘as prepared’ state: they display considerable energy absorption (and also ‘necking’ like plastics), but at the same time a large but not complete (50%) retraction of deformation. However, after the first large tensile deformation, the materials irreversibly switch to ‘real elastomeric’ tensile behaviour (with some creep). The initial ‘plasto-elastic’ stretching thus causes an internal rearrangement. The studied materials, which additionally are valuable due to their high transparency, could be of application interest as advanced structural materials in soft robotics, in implant technology, or in regenerative medicine. The presented study focuses on structure-property relationships, and on their effects on physical properties, especially on the complex tensile, elastic and viscoelastic behaviour of the polyMEA nanocomposites. View Full-Text Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2022 Elektronická adresa https://www.mdpi.com/2073-4360/13/23/4254
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