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Article Dans Une Revue European Polymer Journal Année : 2015

Incorporation and chemical effect of Sn-POSS cages in poly(ethyl methacrylate)

Adam Strachota
  • Fonction : Auteur
Krzysztof Rodzen
  • Fonction : Auteur
Vladimir Raus
  • Fonction : Auteur
Miroslav Janata
  • Fonction : Auteur
Ewa Pavlova
  • Fonction : Auteur

Résumé

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-PUSS 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.

Domaines

Matériaux
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Dates et versions

hal-01291242 , version 1 (21-03-2016)

Identifiants

Citer

Adam Strachota, Krzysztof Rodzen, Vladimir Raus, François Ribot, Miroslav Janata, et al.. Incorporation and chemical effect of Sn-POSS cages in poly(ethyl methacrylate). European Polymer Journal, 2015, 68 (SI), pp.366-378. ⟨10.1016/j.eurpolymj.2015.04.024⟩. ⟨hal-01291242⟩
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