| ENVIRONMENTAL STABILITY OF THE POLYENE PREPARED BY DEHYDROCHLORINATION OF POLY(VINYL CHLORIDE) |
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| 引用本文： | 石高全. ENVIRONMENTAL STABILITY OF THE POLYENE PREPARED BY DEHYDROCHLORINATION OF POLY(VINYL CHLORIDE)[J]. 高分子科学, 2003, 0(1): 71-75 |
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| 作者姓名： | 石高全 |
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| 作者单位： | Department of |
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| 基金项目： | This work was supported by the National Natural Science Foundation of China (Grant No. 50073012). |
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| 摘 要： | A high-quality polyene can be obtained by exensive dehydrochlorination of poly(vinyl chloride) (PVC) in aliquid/solid two-phase system. The liquid phase is a tetrahydrofuran solution of PVC containing a small amount ofpoly(ethylene glycol) with molar mass of 400 g as a phase transfer catalys. The solid phase is potassium hydroxide particles.The structure of the polyene is polyacetylene-like and has a long conjugated C=C sequence and a narrow dispersity ofpolyene sequences according to its FT-infrared and Raman spectra. The environmental stability of the polyene was alsostudied by IR, Raman spectra and elemental analysis. Experimental results demonstrated that the polyene was susceptible toair and could be changed into a material containing high concentrations of hydroxyl and carbonyl groups. The polyenesequences were shortened and its dispersity became broader due to the effect of dioxygen.
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| 收稿时间： | 2002-02-26 |
| 修稿时间： | 2002-04-22 |
ENVIRONMENTAL STABILITY OF THE POLYENE PREPARED BY DEHYDROCHLORINATION OF POLY(VINYL CHLORIDE)* |
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| Liang-ti Qu,Su-qin Sun,Chen Liu,Feng-en Chen,Xiao-yin Hong,Gao-quan Shi. ENVIRONMENTAL STABILITY OF THE POLYENE PREPARED BY DEHYDROCHLORINATION OF POLY(VINYL CHLORIDE)*[J]. Chinese Journal of Polymer Science, 2003, 0(1): 71-75 |
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| Authors: | Liang-ti Qu Su-qin Sun Chen Liu Feng-en Chen Xiao-yin Hong Gao-quan Shi |
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| Affiliation: | Department of Chemistry; Tsinghua University Beijing 100084; China |
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| Abstract: | A high-quality polyene can be obtained by exensive dehydrochlorination of poly(vinyl chloride) (PVC) in aliquid/solid two-phase system. The liquid phase is a tetrahydrofuran solution of PVC containing a small amount ofpoly(ethylene glycol) with molar mass of 400 g as a phase transfer catalys. The solid phase is potassium hydroxide particles.The structure of the polyene is polyacetylene-like and has a long conjugated C=C sequence and a narrow dispersity ofpolyene sequences according to its FT-infrared and Raman spectra. The environmental stability of the polyene was alsostudied by IR, Raman spectra and elemental analysis. Experimental results demonstrated that the polyene was susceptible toair and could be changed into a material containing high concentrations of hydroxyl and carbonyl groups. The polyenesequences were shortened and its dispersity became broader due to the effect of dioxygen. |
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| Keywords: | PVC Two-phase dehydrochlorination Stability IR spectroscopy Raman spectroscopy |
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