| 聚对苯二甲酸乙二酯非晶区反式构象结构的探讨 |
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| 引用本文： | 杨小震,朱善农.聚对苯二甲酸乙二酯非晶区反式构象结构的探讨[J].高分子学报,1983,0(4):302-305. |
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| 作者姓名： | 杨小震 朱善农 |
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| 作者单位： | 中国科学院化学研究所
(杨小震)，中国科学院化学研究所(朱善农) |
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| 摘 要： | <正> 聚对苯二甲酸乙二酯(PET)的重复单元中有乙撑基。它的碳碳键内旋转产生反式构象(T)和左右式构象(G)。用其不同的构象来表征PET的聚集态结构,对研究结构与性能的关系是十分重要的。许多工作都已指出,乙撑基反式构象的谱带热处理时随结晶度的增加而增加。X-射线衍射的结果证实
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| 收稿时间： | 1982-07-31 |
THE STRUCTURE OF POLYETHYLENE TEREPHTHALATE TRANS CONFORMATION IN THE AMORPHOUS PHASE |
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| Yang Xiao-zhen,Zhu Shan-nong.THE STRUCTURE OF POLYETHYLENE TEREPHTHALATE TRANS CONFORMATION IN THE AMORPHOUS PHASE[J].Acta Polymerica Sinica,1983,0(4):302-305. |
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| Authors: | Yang Xiao-zhen Zhu Shan-nong |
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| Institution: | Institute of Chemistry; Aoademia Sinica |
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| Abstract: | PET film annealed at different temperatures have been studied in the far infrared spectra region (300-400cm-1). A 6 cm-1 shift near 382cm-1 band was found between crystalline trans (Tc) and amorphous trans conformation (Ta). The 388 cm-1 band should be associated with Ta conformation.According to the normal vibrational analysis, the differences among Tc, Ta and amorphous structure correspoding to the departures from planarity of the PET molecular unit were discussed. |
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