Preparation of tetraethoxysilane-based silica aerogels with polyimide cross-linking from 3, 3′, 4, 4′-biphenyltetracarboxylic dianhydride and 4, 4′-oxydianiline
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Sol-Gel Science and Technology"
DOI: 10.1007/s10971-017-4566-x
Abstract: AbstractPolyimide cross-linked silica aerogels with different weight percentages of polyimide were prepared through sol–gel technology and supercritical CO2 fluid drying technology. Tetraethoxysilane (TEOS) was used as a silica source precursor, 3-aminopropyltriethoxysilane (APTES) end-capped polyimide was… read more here.
Keywords: polyimide cross; cross; biphenyltetracarboxylic dianhydride; based silica ... See more keywords
Synthesis and properties of polyimides derived from 2,2′-dichloro-4,4′,5,5′-biphenyltetracarboxylic dianhydride
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DOI: 10.1016/j.polymer.2019.121862
Abstract: Abstract To investigate the effect of introducing 2,2′-dichloro substituted biphenyl linkage into the polymer backbones on the properties of polyimides (PI), 2,2′-dichloro-4,4′,5,5′-biphenyltetracarboxylic dianhydride (DCBPDA) was polymerized with aromatic diamines, including 2,2′-bis(trifluoromethyl)benzidine (TFMB) in m-cresol to… read more here.
Keywords: derived dichloro; dichloro biphenyltetracarboxylic; synthesis properties; biphenyltetracarboxylic dianhydride ... See more keywords