期刊
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
卷 93, 期 1, 页码 95-100出版社
SPRINGER
DOI: 10.1007/s10973-007-8805-1
关键词
amine-functionalized POSS; dynamic-mechanical analysis; epoxy network; silsesquioxane
The hydrolytic condensation of a precursor synthesized by the reaction of equimolar amounts of (3-aminopropyl)triethoxysilane and phenylglycidylether led to a distribution of polyhedral oligomeric silsesquioxanes (POSS) containing 8-11 Si atoms, functionalized with amine groups. About 57% of the NH functionalities were active for reaction with epoxy groups. The multifunctional amine-POSS was used to modify an epoxy network obtained by the homopolymerization of diglycidylether of bisphenol A initiated by benzyldimethylamine. The main effect of POSS modification was an increase in both the glassy and rubbery modulus explained, respectively, by the increase in cohesive energy and crosslink densities.
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