Počet záznamů: 1
Poly(meth)acrylate nanocomposite membranes containing in situ exfoliated graphene platelets: synthesis, characterization and gas barrier properties
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SYSNO ASEP 0476829 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Poly(meth)acrylate nanocomposite membranes containing in situ exfoliated graphene platelets: synthesis, characterization and gas barrier properties Tvůrce(i) Poláková, Lenka (UMCH-V) RID
Sedláková, Zdeňka (UMCH-V) RID, ORCID
Ecorchard, Petra (UACH-T) SAI, RID, ORCID
Pavlova, Ewa (UMCH-V) RID
Peter, Jakub (UMCH-V) RID, ORCID
Paruzel, Bartosz (UMCH-V) RID, ORCID
Beneš, Hynek (UMCH-V) RID, ORCIDZdroj.dok. European Polymer Journal. - : Elsevier - ISSN 0014-3057
Roč. 94, September (2017), s. 431-445Poč.str. 15 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova graphite intercalation compounds ; quaternary ammonium salt ; exfoliation Vědní obor RIV CD - Makromolekulární chemie Obor OECD Polymer science Vědní obor RIV – spolupráce Ústav anorganické chemie - Anorganická chemie CEP GA17-08273S GA ČR - Grantová agentura ČR LO1507 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UMCH-V - RVO:61389013 ; UACH-T - RVO:61388980 UT WOS 000411546400038 EID SCOPUS 85026374788 DOI 10.1016/j.eurpolymj.2017.07.033 Anotace Here we report a novel method for the preparation of polymer nanocomposites containing in situ exfoliated graphene nanoplatelets. First, graphite particles were modified by sodium and ethylenediamine (en), yielding first-stage graphite intercalation compounds (GICs) containing [Na(en)]+ complex between carbon sheets. After subsequent ion-exchange reaction of the intercalated complex with quaternary ammonium salt bearing methacrylamide group, GICs possessing polymerizable double bond were obtained. It was found that the extent of [Na(en)]+ complex intercalation as well as the ion-exchange reaction was significantly dependent on the type of the graphite used (natural vs. synthetic). GICs derived from natural graphite were further employed in the synthesis of polymer nanocomposites. Using NMR and TEM it was confirmed that the methacrylamide group in GICs participated successfully in the process of copolymerization with 2-hydroxyethyl methacrylate and 2-ethylhexyl acrylate, resulting in the in situ GICs exfoliation. The prepared nanocomposite membranes were further characterized using X-ray diffraction, DSC and TGA. Gas permeability measurements on the polymer composites were also carried out, confirming that the initial GIC was present in an exfoliated form. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2018
Počet záznamů: 1