Study on Pyrolysis of Polymethylsissesquioxane
Date
2002
Authors
Ma, J.
Shi, L.
Xu, J.
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Journal article
Citation
Journal of Applied Polymer Science, 2002; 20(6):573-577
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Abstract
X-ray photoelectron spectroscopy and Raman spectroscopy were used to determine the chemical change of polyphenylsilsesquioxane (PPSQ) during pyrolysis in flowing nitrogen. Two temperature ranges were found for pyrolysed PPSQ below and above 600°C, respectively. The former is related to the rearrangement of PPSQ backbone and the latter reflects that most of backbone structure of PPSQ might be broken down and unorganized. Carbon formed in carbonization of PPSQ sample pyrolysed at 900°C should be sp<sup>3</sup> bonded, carbon with crystallite size effects or defects.