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Organo‐vermiculite structure ordering after PVAc introduction
Author(s) -
Simha Martynková Gražyna,
Valášková Marta,
Šupová Monika
Publication year - 2007
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200675345
Subject(s) - vermiculite , crystallite , nanocomposite , polyvinyl acetate , materials science , bilayer , intercalation (chemistry) , chemical engineering , polymerization , polymer chemistry , chemistry , composite material , organic chemistry , crystallography , membrane , polymer , biochemistry , engineering
Natural vermiculite served as a host for intercalation with quaternary ammonium salt (QUAT) followed by in‐situ polymerization of polyvinyl acetate (PVAc). We studied the structural changes of organo‐vermiculite and its PVAc nanocomposite with the help of X‐ray diffraction analysis. The mean crystallite size of PVAc nanocomposite is double compared to that of organo‐vermiculite and its distribution of crystallite sizes presents a broader region but more uniform values than the curve calculated for organo‐vermiculite. Molecular dynamic calculation proved a monolayer arrangement of QUAT guests and a bilayer‐like system of guest organic molecules in the vermiculite gallery. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)