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。
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 PVC was more remarkable than that in the system of PVDF, and a considerable concentration of very long trans-(CH), 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.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1990年第5期516-520,共5页
Chemical Journal of Chinese Universities
关键词
聚氯乙烯
脱氯乙氢
相转移催化剂
Dehydrochlortnation, Polyvinylchloride, Phase transfer catalyst
