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Preparation and characterization of thermoplastic vulcanizate/silica nanocomposites
Author(s) -
Wu TzongMing,
Chu MuShun
Publication year - 2005
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.22406
Subject(s) - materials science , polypropylene , nanocomposite , maleic anhydride , thermoplastic , dynamic mechanical analysis , thermal stability , composite material , grafting , monomer , glass transition , copolymer , thermoplastic elastomer , chemical engineering , polymer chemistry , polymer , engineering
This article describes the preparation, characterization, and properties of thermoplastic vulcanizate (TPV)/silica nanocomposites. The nanocomposites were prepared by the melt blending of TPV and maleic anhydride grafted polypropylene (mPP) into organically modified SiO 2 (m‐SiO 2 ), treated with n ‐hexadecyl trimethylammonium bromide as a grafting agent for TPV during the melt mixing. The thermal stability and storage modulus of the 1 wt % m‐SiO 2 containing TPV/mPP/m‐SiO 2 nanocomposite were higher than those of pristine TPV. The most important observation was obtained from dynamic mechanical analysis, which revealed that the glass‐transition temperature of the polypropylene phase of the nanocomposites increased (in comparison with that of virgin TPV), whereas the ethylene–propylene–diene monomer phase remained almost the same. The adhesion strength between the TPV/mPP/m‐SiO 2 nanocomposites and steel also increased with increasing m‐SiO 2 content. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 98: 2058–2063, 2005