ICCAS OpenIR
Phase structure and transitions in a poly(methyloctadecylsilane) oligomer
Wu, ZM; Xie, FC; Hu, ZJ; Liu, JP; Du, BY; He, TB
2001-02-01
Source PublicationPOLYMER
ISSN0032-3861
Volume42Issue:3Pages:1047-1053
AbstractA poly(methyloctadecylsilane) oligomer was synthesized by a typical Wurtz coupling reaction. Upon cooling, three transitions were observed at temperatures of 39.9, 37.5 and 33.9 degreesC at a rate of 2.5 degreesC/min in differential scanning calorimetry (DSC). The first transition, with enthalpy change of 0.47 kT/mol and supercooling of 0.2 degreesC, was characteristic of the conformational change in the Si-Si backbone into an all-trans conformation, which was detected by temperature-dependent Fourier transform infrared (FT-FR) spectroscopy. The second and the third transitions with large supercooling were identified as the formation of two-dimensional hexagonal crystal packing and three-dimensional two-chain orthorhombic crystal packing, respectively. The crystal structure was determined by the combination of WAXD and transmission electron microscopy (TEM) experiments. (C) 2000 Elsevier Science Ltd. All rights reserved.
KeywordPolysilane Conformation Crystallization
Indexed BySCI
Language英语
WOS IDWOS:000089962500022
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/76734
Collection中国科学院化学研究所
Corresponding AuthorHe, TB
AffiliationChinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
Recommended Citation
GB/T 7714
Wu, ZM,Xie, FC,Hu, ZJ,et al. Phase structure and transitions in a poly(methyloctadecylsilane) oligomer[J]. POLYMER,2001,42(3):1047-1053.
APA Wu, ZM,Xie, FC,Hu, ZJ,Liu, JP,Du, BY,&He, TB.(2001).Phase structure and transitions in a poly(methyloctadecylsilane) oligomer.POLYMER,42(3),1047-1053.
MLA Wu, ZM,et al."Phase structure and transitions in a poly(methyloctadecylsilane) oligomer".POLYMER 42.3(2001):1047-1053.
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