| Preliminary Study on Pyrolysis of Polymethylsilsesquioxane by FT—IR and XPS |
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| 作者姓名： | Jun MA Qing Yang FENG Liang He SHI Jian XU* State Key Laboratory of Polymer Physics & Chemistry Center for Molecular Science Institute of Chemistry Chinese Academy of Sciences Beijing |
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| 作者单位： | Jun MA，Qing Yang FENG，Liang He SHI，Jian XU* State Key Laboratory of Polymer Physics & Chemistry，Center for Molecular Science，Institute of Chemistry，Chinese Academy of Sciences，Beijing 100080 |
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| 基金项目： | 国家自然科学基金，State Key Laboratory of Polymer Physics & Chemistry of Institute of Chemistry of Chinese Academy of Sciences |
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| 摘 要： | The term polysilsesquioxanes in this paper refers to all structures with the empiri-cal formulas (RSiO3/2)n where R is hydrogen or any alkyl, alkylene, aryl, arylene, or organo-functional derivatives of alkyl, alkylene, or aryl. Polymethylsilsesquioxane (PMSQ) is characterized by its low weight loss at high temperatures. X-ray photoelectron spectroscopy (XPS) characterization of PMSQ was unavailable from reported literatures. In this study, the pyrolysis was carried out in an inert at…
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| 关 键 词： | 高温分解 聚甲基倍半硅氧烷 X射线电光子分光光谱 |
Preliminary Study on Pyrolysis of Polymethylsilsesquioxane by FT-IR and XPS |
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| Jun MA,Qing Yang FENG,Liang He SHI,Jian XU* State Key Laboratory of Polymer Physics & Chemistry,Center for Molecular Science,Institute of Chemistry,Chinese Academy of Sciences,Beijing .Preliminary Study on Pyrolysis of Polymethylsilsesquioxane by FT-IR and XPS[J].Chinese Chemical Letters,2002,13(1):75-78. |
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| Authors: | Jun MA Qing Yang FENG Liang He SHI Jian XU |
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| Abstract: | Changes of composition and structure of various samples of polymethylsilsesquioxane (PMSQ) pyrolysed at different temperature under flowing nitrogen were investigated by means of FT-IR and X-ray photoelectron spectroscopy. Two temperature domains correspond to important changes in the chemical composition of PMSQ. The former (Tp < 500oC) is related to the transition from regular structure to irregular structure and the latter (Tp > 500oC) is associated with the organic-inorgnic transition. |
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| Keywords: | Polymethylsilsesquioxane pyrolysis X-ray photoelectron spectroscopy |
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