| 时间分辨傅里叶变换红外光谱法研究聚偏氟乙烯的晶变 |
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| 引用本文： | 胡鑫尧,李元昌.时间分辨傅里叶变换红外光谱法研究聚偏氟乙烯的晶变[J].光谱学与光谱分析,1997,17(1):47-49. |
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| 作者姓名： | 胡鑫尧 李元昌 |
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| 作者单位： | 清华大学化学系 |
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| 摘 要： | 本文用时间分辨傅里叶变换红外光谱（ＴＲ－ＦＴＩＲＳ）法研究了聚偏氟乙烯（ＰＶＤＦ）的晶型转变，并认５０８ｃｍ＾－１峰的增强和５２８ｃｍ＾－１峰的减弱表示ａ晶型向β晶型的转变，瞬变的初期时间约５ｍｓ，在晶型转变中伴随有“磁滞回线”的非线性效应。
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| 关 键 词： | 聚偏氟乙烯 IR－FTIRS 晶变 |
TR FTIRS STUDY OF CRYSTAL PHASE TRANSFORMATION IN POLYVINYLIDENE FLUORIDE |
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| X Hu,Y Li,W Lu,S Sun.TR FTIRS STUDY OF CRYSTAL PHASE TRANSFORMATION IN POLYVINYLIDENE FLUORIDE[J].Spectroscopy and Spectral Analysis,1997,17(1):47-49. |
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| Authors: | X Hu Y Li W Lu S Sun |
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| Institution: | Department of Chemistry, Tsinghua University, 100084 Beijing. |
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| Abstract: | The study of polyvinylidene fluoride (PVDF) by time-resolved Fourier transform infrared spectroscopy (TR-FTIRS) was reported. The instantaneous change and process of both alpha-form and beta-form during transformation were studied under the pulse electric field excitation. Transformation of alpha-form to beta-form was indicated by the increasing of the peak at 508cm(-1), the decreasing of the peak at 528cm(-1) and a shift of those peaks. The transient change time was about 5ms. The decreasing of the peak at 528cm(-1) was nonlinear. A hysteresis-like loop was observed, which was related with the biaxially orientated property of PVDF and was in good agreement with its polarizated hysteresis loop. |
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| Keywords: | Time resolved Fourier transform infrared spectroscopy Polyvinylidene fluoried Crystal phase transformation Hysteresis loop |
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