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Effects of raw and poly(propylene oxide) grafted nanosilica on the morphology and thermal and mechanical properties of polyurethane foam
Author(s) -
Gao Xia,
Chen Keping,
Liang Shuen,
Fan Chunchun,
Huang Yigang,
Jia Xiaorong,
Tian Chunrong,
Wang Jianhua
Publication year - 2015
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.42400
Subject(s) - polyurethane , materials science , thermogravimetric analysis , composite material , scanning electron microscope , fourier transform infrared spectroscopy , dynamic mechanical analysis , compression molding , propylene oxide , polymerization , thermal stability , ultimate tensile strength , filler (materials) , transmission electron microscopy , polymer , chemical engineering , copolymer , mold , ethylene oxide , engineering , nanotechnology
Poly(propylene oxide) (PPO)‐grafted nanosilica (NS)/polyurethane foam (PUF) composites were synthesized by a ring‐opening polymerization catalytic process and reaction‐molding technology. The raw NS and PPO–NS were characterized by Fourier transform infrared spectroscopy, thermogravimetric analysis, and transmission electron microscopy. Scanning electron microscopy, dynamic mechanical analysis, and compressive strength tests were used to compare the morphology and thermal and mechanical properties of the PPO–NS/PUF and raw NS/PUF composites with a series of filler contents. The PPO–NS/PUF composites generally exhibited better morphology, thermal and mechanical properties than raw NS/PUF composites. Moreover, the PPO–NS/PUF composites with lower contents (0.5, 1 php) of filler showed even higher mechanical reinforcement than that with higher contents (1.5, 2 php) of filler, which was caused by the interaction between additives and PUF matrix. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42400.