ICCAS OpenIR
Pyrolysis of polymethylsilsesquioxane
Ma, J; Shi, LH; Shi, YY; Luo, SU; Xu, J
2002-08-01
Source PublicationJOURNAL OF APPLIED POLYMER SCIENCE
ISSN0021-8995
Volume85Issue:5Pages:1077-1086
AbstractChanges of the composition and structure of various samples of polymethylsilsesquioxane (PMSQ), pyrolyzed at different temperatures under flowing nitrogen, were investigated using thermogravimetric analysis, Raman and Fourier transform infrared spectroscopies, X-ray photoelectron spectroscopy, elemental analysis, scanning electron microscopy, and transmission electron microscopy. The center of the Si2p peak could be used to estimate the extent of the pyrolysis of PMSQ. Two temperature domains correspond to important changes in the chemical composition of PMSQ. The former (T-p < 500degreesC) is related to the conversion from a regular structure to an irregular structure and the latter (T-p > 500degreesC) is associated with the organic-ceramic conversion. During the latter pyrolysis, flowing of the molten bulk occurred and then a final solid structure was obtained. The main product of PMSQ, pyrolyzed at 900degreesC, is silica, as well as some amount of silicon oxycarbide and traces of amorphous carbon. Based on the above analysis and observation, a conversion process from polysilsesquioxane to a ceramic is proposed. (C) 2002 Wiley Periodicals, Inc.
KeywordPolymethylsilsesquioxane Pyrolysis Ceramic
DOI10.1002/app.10576
Indexed BySCI
Language英语
WOS IDWOS:000175983000023
PublisherJOHN WILEY & SONS INC
Citation statistics
Cited Times:38[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/78604
Collection中国科学院化学研究所
Corresponding AuthorMa, J
Affiliation1.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China
2.Beijing Univ Chem Technol, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Ma, J,Shi, LH,Shi, YY,et al. Pyrolysis of polymethylsilsesquioxane[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2002,85(5):1077-1086.
APA Ma, J,Shi, LH,Shi, YY,Luo, SU,&Xu, J.(2002).Pyrolysis of polymethylsilsesquioxane.JOURNAL OF APPLIED POLYMER SCIENCE,85(5),1077-1086.
MLA Ma, J,et al."Pyrolysis of polymethylsilsesquioxane".JOURNAL OF APPLIED POLYMER SCIENCE 85.5(2002):1077-1086.
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