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Epoxy modified with polymer-grafted GO: role of bimodal functionalization in formation of ordered structures
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SYSNO ASEP 0544215 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Epoxy modified with polymer-grafted GO: role of bimodal functionalization in formation of ordered structures Tvůrce(i) Kelnar, Ivan (UMCH-V) RID, ORCID
Kaprálková, Ludmila (UMCH-V)
Krejčíková, Sabina (UMCH-V)
Zhigunov, Alexander (UMCH-V) RID, ORCID
Dybal, Jiří (UMCH-V) RID, ORCID
Janata, Miroslav (UMCH-V) RIDČíslo článku 124996 Zdroj.dok. Materials Chemistry and Physics. - : Elsevier - ISSN 0254-0584
Roč. 272, 1 November (2021)Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova graphene oxide ; bimodal grafting ; epoxy Vědní obor RIV JI - Kompozitní materiály Obor OECD Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics CEP GA19-06065S GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000683020400003 EID SCOPUS 85109618465 DOI 10.1016/j.matchemphys.2021.124996 Anotace The modification of epoxy with polymer-grafted graphene oxide (GO) is a radical alternative to mere combination of GO with a polymeric modifier. Here, this aspect is revealed for the case of bimodal grafting of GO with hydrophobic polybutadiene and hydrophilic polyoxypropylene or polyethylene glycol utilizing grafting-to approach to link different chains in the plane and edge area of GO. The results indicate fair ability of bimodally grafted GO to form ordered lamellar structures in epoxy. However, these structures show larger distance between less aligned GO plates in contrast to tightly aligned GO arrangement in case of single grafting. This is enabled by repulsive interactions between dissimilar chains. Such a structure with higher mobility of grafted chains has favorable effect on mechanical performance of epoxy. The effect of chain type and geometry of grafting is highlighted as well. Important finding is promotion of lamellar structure formation also by grafted low-m. w. compounds. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2022 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S0254058421007793?via%3Dihub
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