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Incorporation and chemical effect of Sn-POSS cages in poly(ethyl methacrylate)
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SYSNO ASEP 0444155 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Incorporation and chemical effect of Sn-POSS cages in poly(ethyl methacrylate) Author(s) Strachota, Adam (UMCH-V) RID, ORCID
Rodzen, Krzysztof (UMCH-V)
Raus, Vladimír (UMCH-V) RID, ORCID
Ribot, F. (FR)
Janata, Miroslav (UMCH-V) RID
Pavlova, Ewa (UMCH-V) RIDSource Title European Polymer Journal. - : Elsevier - ISSN 0014-3057
Roč. 68, July (2015), s. 366-378Number of pages 13 s. Language eng - English Country GB - United Kingdom Keywords POSS ; stannoxane ; organic–inorganic hybrid Subject RIV CD - Macromolecular Chemistry R&D Projects GAP108/11/2151 GA ČR - Czech Science Foundation (CSF) GAP106/12/0844 GA ČR - Czech Science Foundation (CSF) Institutional support UMCH-V - RVO:61389013 UT WOS 000357230800030 EID SCOPUS 84929306114 DOI 10.1016/j.eurpolymj.2015.04.024 Annotation Organic–inorganic hybrids based on poly(ethyl methacrylate) and Sn-POSS nano-building blocks were prepared via radical polymerization of ethyl methacrylate, in which Sn-POSS was dissolved. Sn-POSS was incorporated as non-functional or as bis(acrylamido)-functional unit, at the concentrations of 0.5–10 wt%. Both Sn-POSS cage types were shown to prevent the oxidative degradation of the matrix modulus, without causing an excessive crosslinking even at the highest Sn-POSS concentration. A very marked effect is, that the Sn-cages cause the preservation of the impact toughness of the poly(ethyl methacrylate)/Sn-POSS hybrids, if the latter are subjected to oxidation, while the impact toughness of the neat matrix decreases by one order after the same treatment. The effect of the Sn-POSS cages can be explained by radical reactions, in which the cages reconnect matrix chains previously interrupted by oxidative scission. The Sn-POSS thus practically causes a “reconstruction” of the interrupted linear chains. The process is already very efficient between 0.5 and 1 wt% of Sn-POSS. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2016
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