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Synthesis, characterization, and properties of a polyhedral oligomeric octadiphenylsulfonylsilsesquioxane
Author(s) -
Li Ziqian,
Yang Rongjie
Publication year - 2014
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.40892
Subject(s) - thermogravimetric analysis , silsesquioxane , differential scanning calorimetry , thermal stability , materials science , glass transition , fourier transform infrared spectroscopy , thermal decomposition , ultimate tensile strength , polymer chemistry , mass spectrometry , composite material , chemical engineering , chemistry , polymer , organic chemistry , physics , chromatography , engineering , thermodynamics
A novel polyhedral oligomeric octadiphenylsulfonylsilsesquioxane (ODPSS) was synthesized from octaphenylsilsesquioxane and benzenesulfonyl chloride via a Friedel–Crafts reaction with a high yield. ODPSS was identified by Fourier transform infrared spectroscopy, 1 H‐NMR, 13 C‐NMR, 29 Si‐NMR, matrix‐assisted laser desorption/ionization time‐of‐flight mass spectrometry (MALDI–TOF MS), wide‐angle X‐ray diffraction, and elemental analysis to be a kind of polyhedral oligomeric silsesquioxane of a T 8 R 8 structure. ODPSS exhibited superior thermal stability according to thermogravimetric analysis. Its initial thermal decomposition temperature ( T onset ) was at 491°C in air and 515°C in nitrogen. Thermal and mechanical properties of epoxy resin (EP) composites with ODPSS added were studied by differential scanning calorimetry and tensile testing. The results show that the incorporation of ODPSS at a low loading content not only improved the glass‐transition temperature of the EP composites but also enhanced their tensile strength. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 40892.