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Polymer blends of poly(2-cyanoethyl vinyl ether) and poly(methyl methacrylate) with improved dielectric properties for flexible electronics
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SYSNO ASEP 0475990 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Polymer blends of poly(2-cyanoethyl vinyl ether) and poly(methyl methacrylate) with improved dielectric properties for flexible electronics Tvůrce(i) Piana, Francesco (UMCH-V) RID, ORCID
Kredatusová, Jana (UMCH-V) RID
Paruzel, Bartosz (UMCH-V) RID, ORCID
Pfleger, Jiří (UMCH-V) RIDZdroj.dok. Express Polymer Letters. - : Budapest University of Technology and Economics, Department of Polymer Engineering - ISSN 1788-618X
Roč. 11, č. 9 (2017), s. 731-737Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. HU - Maďarsko Klíč. slova polymer blends and alloys ; dielectric properties ; differential scanning calorimetry Vědní obor RIV CD - Makromolekulární chemie Obor OECD Polymer science CEP LO1507 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000404994800006 EID SCOPUS 85021882371 DOI 10.3144/expresspolymlett.2017.70 Anotace There is a big demand for the development of polymer materials for flexible electronics, among them polymers with a high dielectric constant play an important role. Here the preparation and properties of a polymer blend composed of poly(2-cyanoethyl vinyl ether) (CEPVA) as an amorphous polymer with dielectric constant (epsilon´) ~ 15 but glass temperature (Tg) close to room temperature, and poly(methyl methacrylate) (PMMA), a polymer with low epsilon´ ~ 5 and high Tg, are reported. The film forming ability, structure and dielectric properties of the blend are reported to verify its applicability for capacitors and field effect transistors. PMMA:CEPVA ratios 10:90 and 30:70 represent the best composition for obtaining a monophasic system with increased dielectric constant and Tg well above the room temperature. The improved properties have been attributed to the impact of PMMA on the relaxation phenomena of CEPVA, namely to an increased mobility of cyano-groups responsible for the dielectric behavior, as it was observed by the broadband dielectric and nuclear magnetic resonance (NMR) spectroscopies. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2018
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