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Studies of organoclays with functionalized pillaring agents
Author(s) -
Zhang Yongcheng,
Pittman Charles U.,
Arockiasamy Antonyraj,
King Roger L.
Publication year - 2011
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.33709
Subject(s) - epoxy , montmorillonite , thermal stability , materials science , composite material , ion exchange , olefin fiber , polymer chemistry , ammonium , chemical engineering , chemistry , organic chemistry , ion , polymer , engineering
A series of clay pillaring agents with amino, olefin, and epoxy groups were synthesized. These pillaring agents were used to modify montmorillonite clay by ion‐exchange reactions. TGA studies showed that organoclays with imidazolium pillaring agents have a higher thermal stability than those with ammonium groups. The d ‐spacings of organoclays were not affected by the pillaring agent functional groups and were sensitive to the size of pillaring agents. The dynamic‐mechanical properties of the resulting clay/epoxy composites determined by DMA were similar. The addition of these clays to this epoxy resin enhanced the T g value of the resulting composites and greatly enhanced the storage moduli versus the pure epoxy resin by 1.6–1.8 times at 135°C. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011