高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (5): 516-520.

• 研究论文 • 上一篇    下一篇

聚氯乙烯-相转移催化剂膜在NaOH水溶液中脱氯化氢

王荣顺, 谢德民, 傅玉洁, 张喜艳, 王玉松, 赵成大   

  1. 东北师范大学化学系
  • 收稿日期:1988-09-28 出版日期:1990-05-24 发布日期:1990-05-24
  • 通讯作者: 谢德民

Dchydrochlorination of Polyvinylchloride-Phase Transfer Catalyst Film in Aqueous Sodium Hydroxide Solution

Wang Rongshun, Xie Demin, Fu Yujie, Zhang Xiyan, Wang Yusong, Zhao Chengda   

  1. Department of Chemistry, Northeast Normal University, Chaigchai
  • Received:1988-09-28 Online:1990-05-24 Published:1990-05-24

摘要: 将聚氯乙烯粉末与相转移催化剂(四丁基溴化铵-TBAB)混合溶液制成膜后,使其在NaOH水溶液中脱HCl。用FTIR和UV-Vis光谱表征产物的结构。本法脱HCl反应速度比Kise方法快,转化率比较高,产生了相当浓度的较长反式聚乙炔链段。研究了温度、时间和催化剂用量对反应的影响。

关键词: 脱氯化氢, 聚氯乙烯, 相转移催化剂

Abstract: The solution of polyvinylchloride with a phase transfer catalyst-tetrabutylammonium bromide (TBAB) was casted into film, then it was immersed in aqueous sodium hydroxide solution for de-hydrochlorination. The structure of the product was characterized by FTIR and UV-VIS spectropho-tometry. Comparing with Kise's method we found that the elevated extent of reaction rate and conversion in the system of PVCwas more remarkable than that in the system of PVDF, and a considerable concentration of very long trans-(CH)x, chain sequences was induced. We studied the effects of temperature, time and the quantity of catalyst used on the reaction and the best reaction condition was obtained.

Key words: Dehydrochlortnation, Polyvinylchloride, Phase transfer catalyst