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The effect of short polystyrene brushes grafted from graphene oxide on the behavior of miscible PMMA/SAN blends
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SYSNO ASEP 0533162 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The effect of short polystyrene brushes grafted from graphene oxide on the behavior of miscible PMMA/SAN blends Author(s) Ilčíková, M. (SK)
Galeziewska, M. (PL)
Mrlik, M. (CZ)
Osicka, J. (CZ)
Masar, M. (CZ)
Šlouf, Miroslav (UMCH-V) RID, ORCID
Maslowski, M. (PL)
Kracalik, M. (AT)
Pietrasik, R. (PL)
Mosnáček, J. (SK)
Pietrasik, J. (PL)Article number 123088 Source Title Polymer. - : Elsevier - ISSN 0032-3861
Roč. 211, 21 December (2020), s. 1-9Number of pages 9 s. Language eng - English Country GB - United Kingdom Keywords polymer blends ; PMMA ; SAN Subject RIV CD - Macromolecular Chemistry OECD category Polymer science R&D Projects TN01000008 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) Method of publishing Limited access Institutional support UMCH-V - RVO:61389013 UT WOS 000601160400005 EID SCOPUS 85092092465 DOI 10.1016/j.polymer.2020.123088 Annotation A new concept of utilization of particle-polymer hybrids as multifunctional additives for polymer blends was introduced in this study. Graphene oxide particles with short densely grafted polystyrene brushes (GO-g-PS) were prepared by surface-initiated atom transfer radical polymerization (SI-ATRP). Melt rheology studies revealed that GO-g-PS suppressed the phase separation of miscible poly(methyl methacrylate)/poly(styrene-co-acrylonitrile) (PMMA/SAN) blends. The studies suggested specific interactions of GO-g-PS with the PMMA phase and this was confirmed based on calculations of activation energies of segmental relaxations by broadband dielectric spectroscopy (BDS). These unusual interactions of GO-g-PS with PMMA phase were assigned to the specific and precise architecture of the GO-g-PS particles as well as chemical nature of PS polymer brushes. The short chains of PMMA and PS provide miscibility originating from UCST behavior of PMMA/PS blend of short polymer chains. Additionally, BDS also revealed improved charge transport in PMMA/SAN blend in presence of GO-g-PS hybrid. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2021 Electronic address https://www.sciencedirect.com/science/article/pii/S0032386120309137?via%3Dihub
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