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Polybenzoxazine containing polysilsesquioxane: Preparation and thermal properties
Author(s) -
Liu Yonghong,
Zhang Weian,
Chen Yan,
Zheng Sixun
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.22270
Subject(s) - thermogravimetric analysis , thermal stability , thermal decomposition , hydrolysis , paraformaldehyde , polymer chemistry , phenol , materials science , char , nuclear chemistry , mannich reaction , chemistry , catalysis , pyrolysis , organic chemistry
Benzoxazine bearing trimethoxylsilane (BA‐b) was successfully synthesized via Mannich condensation among phenol, paraformaldehyde, and γ‐aminopropyltrimethoxysilane. The hydrolysis and condensation of the BA‐b catalyzed by hydrochloric acid can afford a soluble polysilsesquioxane bearing benzoxazine groups (denoted PSSQ‐b). By initiating the cocuring reaction of PSSQ‐b with difunctional benzoxazine of bisphenol A (BA‐a), the inorganic–organic hybrids of polybenzoxazine with polysilsesquioxane were prepared. The hybrids displayed enhanced T g 's in comparison with the control polybenzoxazine. In terms of initial decomposition temperature ( T d ) and char and ceramic yields, the hybrids exhibited improved thermal stability as shown by thermogravimetric analysis (TGA). © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 99: 927–936, 2006
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