【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，并以５０８ｃｍ－１峰的增强和５２８ｃｍ－１峰的减弱表示α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。更多还原

【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 α form and β form during transformation were studied under the pulse electric field excitation.Transformation of α form to β 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.更多还原