| 热释电流法研究聚对苯二甲酸乙二醇酯的Sub-T_g存放 |
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| 引用本文： | 李炜,童刚,周漪琴,漆宗能.热释电流法研究聚对苯二甲酸乙二醇酯的Sub-T_g存放[J].高分子学报,1986,0(5):360-364. |
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| 作者姓名： | 李炜 童刚 周漪琴 漆宗能 |
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| 作者单位： | 中国科学技术大学应用化学系 合肥
(李炜，童刚，周漪琴)，中国科学院化学研究所 北京(漆宗能) |
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| 摘 要： | 测量了一系列在T
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| 收稿时间： | 1984-08-09 |
STUDIES ON Sub-Tg ANNEALED POLYETHYLENE TEREPHTHALATE BY THERMALLY STIMULATED CURRENT |
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| LI Wei,TONG Gang,ZHOU Yi-qin,QI Zong-neng.STUDIES ON Sub-Tg ANNEALED POLYETHYLENE TEREPHTHALATE BY THERMALLY STIMULATED CURRENT[J].Acta Polymerica Sinica,1986,0(5):360-364. |
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| Authors: | LI Wei TONG Gang ZHOU Yi-qin QI Zong-neng |
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| Institution: | Department of Applied Chemistry; University of Science and Technology of China; Hefei; Institute of Chemistry; Academia Sinica; Beijing |
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| Abstract: | The Thermally Stimulated Current (TSC) spectra of a series of Sub-Tg annealed Polyethylene Terephthalate (PET) specimens have been measured. It is found that there is only one peak at 80℃ above room temperature, which relates to the thermo-relaxation of frozen-in dip oles. The activation energy of such dipole motion has been calculated. The relation between the maximum current and the storage time can be explained by the free volume theory and agrees with the results from the exess thermodynamic properties. Compared with differential scanning calorimeter (DSC) and tensile stress-strain method, TSC is a simpler and more sensitive method in studying Sub-Tg annealed polymers. |
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