在超声波辐照下甲基纤维素的降解及与丙烯腈共聚反应的研究

CIESC Journal

在超声波辐照下甲基纤维素的降解及与丙烯腈共聚反应的研究

宫晓颐,陈克强,徐僖

成都科技大学高分子研究所 ,成都科技大学高分子研究所 ,成都科技大学高分子研究所

出版日期:1987-09-25 发布日期:1987-09-25

Studies on Ultrasonic Degradation of Methyl Cellulose and Its Copolymerization with Acrylonitrile

Gong Xiaoyi Chen Keqiang and Xu Xi (Polymer Research Institute, Chengdu University of Science and Technology)

Online:1987-09-25 Published:1987-09-25

摘要/Abstract

摘要： 本文研究了水溶液中甲基纤维素的超声波辐照降解反应,证实该反应具有一般的力降解特征,发现降解速率不是辐照时间的单调增函数.以水/甲酸为溶剂,在超声波辐照下制得了甲基纤维素-丙烯腈共聚物,考察了共聚过程,提供了获得水溶性共聚物的反应条件.证实所得共聚物是接枝,嵌段兼有的共聚物,共聚点主要发生在甲氧基上,共聚物是非晶态的.初步研究了共聚产物水溶液的热稳定性和抗盐性,与甲基纤维素对比,这些性能均有改善.

Abstract: The ultrasonic degradation reactions of methyl cellulose (MC) in its aqueous solution under different conditions were studied. It was found that the degradation reactions are of a mechanochemical nature and the degradation rate is not an increasing function of irradiating time. The ultrasonic irradiation of MC and acrylonitrile (AN) in H2O/HCOOH resulted in a copolymer of MC and AN. A method for preparing the water-soluble copolymer was suggested. The copolymer is both block and graft with joints mainly located on methoxy groups of MC. This was elucidated by the character of the copolymerization reaction and by analysing the copolymer structure with the help of DTA, IR, PGC and MS.The state of molecular aggregation of the copolymer was identified by XRD and SEM. The surface activety, thermostability, and resistance to salt in the aqueous solution of the copolymerization product were examined. They were found to be better than those of MCs.

宫晓颐,陈克强,徐僖. 在超声波辐照下甲基纤维素的降解及与丙烯腈共聚反应的研究 [J]. CIESC Journal.

Gong Xiaoyi Chen Keqiang and Xu Xi (Polymer Research Institute, Chengdu University of Science and Technology). Studies on Ultrasonic Degradation of Methyl Cellulose and Its Copolymerization with Acrylonitrile[J]. .