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Synthesis of unsaturated polyester‐clay nanocomposites using reactive organoclays
Author(s) -
Fu XiaoAn,
Qutubuddin Syed
Publication year - 2004
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.20031
Subject(s) - nanocomposite , montmorillonite , materials science , cationic polymerization , ammonium chloride , ammonium , aqueous solution , polymer chemistry , polyester , surface modification , dispersion (optics) , chemical engineering , composite material , organic chemistry , chemistry , physics , optics , engineering
Abstract Two polymerizable cationic surfactants, vinylbenzyl n‐alkyldimethyl (n = 12 or 18) ammonium chlorides, were used for functionalization of montmorillonite (MMT) and preparation of unsaturated polyester (UP)‐clay nanocomposites. Polymerizable organophilic clays were prepared by exchanging the sodium ions of MMT with vinylbenzyldodecyldimethyl ammonium chloride (VDAC) or vinylbenzyloctadecyldimethyl ammonium chloride (VOAC) in an aqueous medium. The dispersion of organoclays in UP led to gel formation. UP/VDAC‐MMT resulted in intercalated nanocomposites while UP/VOAC‐MMT formed partially exfoliated nanocomposites. The nanocomposites exhibited higher dynamic modulus than pristine UP.