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Effect of GO modification and curing on formation of ordered structures in epoxy composites
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SYSNO ASEP 0547346 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Effect of GO modification and curing on formation of ordered structures in epoxy composites 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) RIDArticle number 131094 Source Title Materials Letters. - : ELSEVIER SCIENCE BV - ISSN 0167-577X
Roč. 308, Part A (2022)Number of pages 4 s. Language eng - English Country NL - Netherlands 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 Limited access Institutional support UMCH-V - RVO:61389013 UT WOS 000711380300008 EID SCOPUS 85117360138 DOI 10.1016/j.matlet.2021.131094 Annotation Modifications of GO by polymer chains may promote, in addition to exfoliation, also formation of ordered structures in epoxy. However, the contribution of self- assembly in the uncured matrix and reaction-induced phase separation to this process is not clear. SAXS study of analogous liquid and cured epoxy reveals that single grafted GO forms ordered structures only due to RIPS of grafted rubber. The marked self-assembly of bimodally grafted GO (BGO) before curing indicates that such modification changes its ordering performance substantially. Moreover, formation of ordered lamellar structures in liquid epoxy accompanied by easy migration of BGO may lead to formation of these arrays at the interface in carbon fibre composites. As a result, in-situ formation of effective nacre-like structures on the surface of CF, increasing delamination resistance, can be achieved. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2023 Electronic address https://www.sciencedirect.com/science/article/pii/S0167577X21017924?via%3Dihub
Number of the records: 1