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ATRP of POSS monomers revisited: toward high-molecular weight methacrylate–POSS (co)polymers
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SYSNO ASEP 0434548 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title ATRP of POSS monomers revisited: toward high-molecular weight methacrylate–POSS (co)polymers Author(s) Raus, Vladimír (UMCH-V) RID, ORCID
Čadová, Eva (UMCH-V) RID
Starovoytova, Larisa (UMCH-V) RID
Janata, Miroslav (UMCH-V) RIDSource Title Macromolecules. - : American Chemical Society - ISSN 0024-9297
Roč. 47, č. 21 (2014), s. 7311-7320Number of pages 10 s. Language eng - English Country US - United States Keywords POSS ; iBuPOSSMA ; ATRP Subject RIV CD - Macromolecular Chemistry R&D Projects GAP106/12/0844 GA ČR - Czech Science Foundation (CSF) Institutional support UMCH-V - RVO:61389013 UT WOS 000344905800006 EID SCOPUS 84909619780 DOI 10.1021/ma501541g Annotation For the first time, ATRP was successfully employed for homopolymerization of a commercial methacrylate-functionalized polyhedral oligomeric silsesquioxane (POSS) monomer, iBuPOSSMA, to high molecular weights. It was found that iBuPOSSMA has a low ceiling temperature (Tc); therefore, low temperatures and/or high initial monomer concentrations need to be used in order to avoid low degrees of polymerization that had been observed previously. The values of Tc, as well as of the polymerization enthalpy ΔHp and entropy ΔSp were determined to be 130 °C (at [M]0 = 1 M), −41 kJ mol–1, and −101 J mol–1 K–1, respectively. Under optimized conditions, poly(iBuPOSSMA) homopolymers having low dispersity and high Mn, ranging from 23 000 to 460 000, were obtained in a well-controlled ATRP process. Moreover, various block copolymers having high-Mn poly(iBuPOSSMA) blocks were prepared by copolymerization of iBuPOSSMA with methyl methacrylate and styrene. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2015
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