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Complex structures formed by combination of polymer-grafted GO and impact modifier in epoxy
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SYSNO ASEP 0546636 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Complex structures formed by combination of polymer-grafted GO and impact modifier in epoxy Author(s) Kelnar, Ivan (UMCH-V) RID, ORCID
Kaprálková, Ludmila (UMCH-V)
Krejčíková, Sabina (UMCH-V)
Zhigunov, Alexander (UMCH-V) RID, ORCID
Janata, Miroslav (UMCH-V) RIDSource Title Journal of Materials Research and Technology-JMR&T. - : Elsevier - ISSN 2238-7854
Roč. 14, September–October (2021), s. 1969-1974Number of pages 6 s. Language eng - English Country BR - Brazil Keywords graphene oxide ; bimodal grafting ; epoxy Subject RIV JI - Composite Materials OECD category Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics R&D Projects GA19-06065S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support UMCH-V - RVO:61389013 UT WOS 000702861300012 EID SCOPUS 85111714872 DOI 10.1016/j.jmrt.2021.07.094 Annotation Parameters of epoxy can be effectively improved using polymer-grafted GO. This study reveals so far unknown structure-directing performance of single- and bimodally-grafted GO in impact-modified epoxy. Bimodal grafting leads to formation of lamellae with less ordered more distant GO and fair mobility of grafted dissimilar chains due to their repulsive interactions, resulting in favourable effect on mechanical properties of epoxy. Unlike single-grafted GO with aligned plates, this ordering is not disturbed by added rubber which is more markedly incorporated even as layered domains into lamellae. Formation of more complex structures controlled by grafting geometry was also found. Structure–properties relationships indicate low contribution of added rubber, both as single inclusions or incorporated into ordered GO domains, which confirms high effectivity of lamellar structure with linked polymer chains of relatively high mobility. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2022 Electronic address https://www.sciencedirect.com/science/article/pii/S2238785421007572?via%3Dihub
Number of the records: 1