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Carborane‐incorporated poly(silyleneethynylenephenyleneethynylene)s with different side groups
Author(s) -
Wang Canfeng,
Jiang Yun,
Gao Yu,
Zhou Yan,
Huang Farong,
Du Lei
Publication year - 2012
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.23071
Subject(s) - thermosetting polymer , materials science , carborane , thermogravimetric analysis , differential scanning calorimetry , polymer chemistry , fourier transform infrared spectroscopy , polymer , pyrolysis , side chain , pyrolytic carbon , chemical engineering , composite material , organic chemistry , chemistry , physics , engineering , thermodynamics
Carborane‐incorporated poly(silyleneethynylenephenyleneethynylene)s with different side groups were synthesized from corresponding poly(silyleneethynylenephenyleneethynylene)s and decaborane (B 10 H 14 ) in the presence of acetonitrile through in‐situ reaction. The obtained polymers with o ‐carborane units were characterized by using Fourier transform infrared and nuclear magnetic resonance spectroscopies, rheological measurements, differential scanning calorimetry, and thermogravimetric analysis. The results show that the properties of these carborane‐incorporated polymers vary with side groups in main chains. They possess good processability and can be crosslinked to form thermosets at temperatures less than 250°C. The thermosets exhibit excellent thermal and thermooxidative stabilities. The weight losses of the thermosets heated to 800°C in air are only 10% approximately. After pyrolysis of the thermosets in nitrogen at 1000°C, the pyrolytic products have no further weight losses up to 1000°C in air. POLYM. ENG. SCI., 2012. © 2012 Society of Plastics Engineers