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ATRP of POSS monomers revisited: toward high-molecular weight methacrylate–POSS (co)polymers
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SYSNO ASEP 0434548 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název ATRP of POSS monomers revisited: toward high-molecular weight methacrylate–POSS (co)polymers Tvůrce(i) Raus, Vladimír (UMCH-V) RID, ORCID
Čadová, Eva (UMCH-V) RID
Starovoytova, Larisa (UMCH-V) RID
Janata, Miroslav (UMCH-V) RIDZdroj.dok. Macromolecules. - : American Chemical Society - ISSN 0024-9297
Roč. 47, č. 21 (2014), s. 7311-7320Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova POSS ; iBuPOSSMA ; ATRP Vědní obor RIV CD - Makromolekulární chemie CEP GAP106/12/0844 GA ČR - Grantová agentura ČR Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000344905800006 EID SCOPUS 84909619780 DOI 10.1021/ma501541g Anotace 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. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2015
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