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Novel phenyl acetylene terminated poly(carborane‐silane): Synthesis, characterization, and thermal property
Author(s) -
Zhou Quan,
Mao Zuju,
Ni Lizhong,
Chen Jianding
Publication year - 2007
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.25719
Subject(s) - thermogravimetric analysis , char , acetylene , polymer chemistry , carborane , gel permeation chromatography , materials science , yield (engineering) , pyrolysis , thermosetting polymer , nuclear chemistry , chemistry , organic chemistry , polymer , composite material
Phenyl acetylene terminated poly(carborane‐silanec) (PACS) was synthesized by the couple reaction of methyldichlorosilane with 1,7‐dilithio‐ m ‐carborane and lithium phenylacetylide. The structure was characterized using FTIR, 1 H‐NMR, 13 C‐NMR, 29 Si‐NMR, and gel permeation chromatography. PACS exhibits solubility in common organic solvents. Thermal and oxidative properties were evaluated by thermogravimetric analysis (TGA). Thermoset exhibits extremely thermal and oxidative property and TGA curves show that the temperature of 5% weight loss (Td 5 ) is 762°C and char yield at 800°C is 94.2% in nitrogen. In air, surprisingly, both Td 5 and char yield at 800°C show slight increase, which is greater than 800°C and 95.6%, respectively. After pyrolysis, the char has no additional weight loss up to 800°C in air. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 104: 2498–2503, 2007