应用化学 ›› 1997, Vol. 0 ›› Issue (4): 91-93.

• 研究论文 • 上一篇    下一篇

PVB存在下PVC化学法脱氯化氢的研究

刘恒, 李大成, 陈朝珍   

  1. 四川联合大学化工学院, 成都 610065
  • 收稿日期:1996-09-08 修回日期:1997-05-26 出版日期:1997-08-10 发布日期:1997-08-10
  • 基金资助:
    国家教育委员会留学归国人员资助费资助

Chemical Dehydrochlorination of Poly(vinyl chloride) in the Presence of Poly(vinyl butyral)

Lui Heng, Li Dacheng, Chen Caozhen   

  1. Chemical Engineering School, Sichuan Union University, Chengdu 610065
  • Received:1996-09-08 Revised:1997-05-26 Published:1997-08-10 Online:1997-08-10

摘要: 近年来在 PVC 脱氯化氢制共轭聚合物的研究中, 为了提高产物的共轭链长及空气稳定性, 采用了一些新的方法[1~3]. 在反应体系中引入惰性聚合物载体也是其中之一[4]. 本文报道碱金属叔丁醇/四氢呋喃溶液中在聚乙烯醇缩丁醛(PVB)存在下 PVC 脱氯化氢的行为, 探讨了 PVB 对 PVC 脱氯化氢反应速度及产物结构的影响, 用钾钠合金与叔丁醇反应物代替叔丁醇钾用于PVC脱氯化氢, 仍可得到一种具有较长共轭链空气稳定性好的类聚乙炔结构的产物。

关键词: 聚氯乙烯, 脱氯化氢, 聚乙烯醇缩丁醛

Abstract: PVC has been dehydrochlorinated by alkali alkoxide in the presence of poly(vinyl butyral)(PVB). Effects of time, reagents and PVB on the reaction have been studied. The solution and product was analyzed by UV-Vis spectrophotometry and FTIR. A highly dehydrochlorinated PVC and stable product with long trans-(CH)x chain sequences has been found.

Key words: poly(vinyl chloride), dehydrochlorination, poly(vinyl butyral)