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Tin-based "super-POSS" building blocks in epoxy nanocomposites with highly improved oxidation resistance
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SYSNO ASEP 0431055 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Tin-based "super-POSS" building blocks in epoxy nanocomposites with highly improved oxidation resistance Tvůrce(i) Strachota, Adam (UMCH-V) RID, ORCID
Rodzen, Krzysztof (UMCH-V)
Ribot, F. (FR)
Perchacz, Magdalena (UMCH-V) RID
Trchová, Miroslava (UMCH-V) RID, ORCID
Steinhart, Miloš (UMCH-V) RID
Starovoytova, Larisa (UMCH-V) RID
Šlouf, Miroslav (UMCH-V) RID, ORCID
Strachota, Beata (UMCH-V) RIDZdroj.dok. Polymer. - : Elsevier - ISSN 0032-3861
Roč. 55, č. 16 (2014), s. 3498-3515Poč.str. 18 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova nanocomposite ; POSS ; stannoxane Vědní obor RIV CD - Makromolekulární chemie CEP GAP108/11/2151 GA ČR - Grantová agentura ČR Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000340812300026 EID SCOPUS 84905438199 DOI 10.1016/j.polymer.2014.06.002 Anotace A novel tin-based POSS analogue, butylstannoxane dodecamer, was incorporated as chemically active nanofiller in epoxy resins and achieved a considerable anti-oxidative activity already near 0.05 wt% and very high activity near 1 wt%. The amino-functional nanofiller, which bonds as a linear segment, displayed a high reactivity towards the resin components during cure and was very poorly extractable. Interestingly, at elevated temperatures, the stannoxane nanofiller, whose functional substituents are attached by ionic bonds, displays a considerable short-range mobility in the matrix, and in course of a nano-phase-separation process, rearranges and polymerizes to needle-like nano-domains. This effect leads to additional crosslinking in the nanocomposite. This “solid-phase nano-precipitation” does not occur under oxidative conditions, where the nanofiller preferentially undergoes crosslinking with matrix chains and is thereby immobilized. Nanocomposite synthesis, characterization and the concentration dependence of the nanofiller effect are presented. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2015
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