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Poly(meth)acrylate nanocomposite membranes containing in situ exfoliated graphene platelets: synthesis, characterization and gas barrier properties

SYSNO ASEP	0476829
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Poly(meth)acrylate nanocomposite membranes containing in situ exfoliated graphene platelets: synthesis, characterization and gas barrier properties
Author(s)	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, ORCID}
Source Title	European Polymer Journal. - : Elsevier - ISSN 0014-3057 Roč. 94, September (2017), s. 431-445
Number of pages	15 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	graphite intercalation compounds ; quaternary ammonium salt ; exfoliation
Subject RIV	CD - Macromolecular Chemistry
OECD category	Polymer science
Subject RIV - cooperation	Institute of Inorganic Chemistry - Inorganic Chemistry
R&D Projects	GA17-08273S GA ČR - Czech Science Foundation (CSF)
	LO1507 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Institutional support	UMCH-V - RVO:61389013 ; UACH-T - RVO:61388980
UT WOS	000411546400038
EID SCOPUS	85026374788
DOI	10.1016/j.eurpolymj.2017.07.033
Annotation	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.
Workplace	Institute of Macromolecular Chemistry
Contact	Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
Year of Publishing	2018

Number of the records: 1