【摘要】 用纵拉、先纵后横、纵——横——纵等拉伸方式得到了各种平面取向程度的PET薄膜。FTIR光声光谱表明,薄膜中旁式构象的含量随平面取向度增大线性下降,反式构象含量线性增长。由短路热释电空间电荷峰计算了陷阱深度。结果表明,薄膜平面取向程度愈高,其平均陷阱能级愈深,呈现线性关系。更多还原

【Abstract】 PET films with various degree of plannar orientation were prepared by the stretching uniaxially and biaxially. FTIR spectra study indicates that the content of gauche conformation decreased linearly with the degree of plannar orientation, while one of trans conformation increased, linearly. A linear relationship between the mean trap depth calculated from TSC spectra and degree of plannar orientation has been observed.更多还原