应用化学 ›› 1988, Vol. 0 ›› Issue (4): 1-6.

• 研究论文 •    下一篇

丁二烯和异戊二烯无规共聚物的结晶行为

徐洋, 周恩乐, 钱保功   

  1. 中国科学院长春应用化学研究所
  • 收稿日期:1987-04-03 修回日期:1987-07-04 出版日期:1988-08-10 发布日期:1988-08-10

THE CRYSTALLIZATION BEHAVIOUR OF BUTADIENE-ISOPRENE COPOLYMER

Xu Yang, Zhou Enle, Qian Baogong   

  1. Changchun Institute of Applied Chemistry, Academia Sinica
  • Received:1987-04-03 Revised:1987-07-04 Published:1988-08-10 Online:1988-08-10

摘要: 本工作以电镜和线膨胀仪研究了丁二烯(B)和异戊二烯(IP)无规共聚物(BIC)的结晶行为.发现在丁二烯链节上引入少量的异戊二烯链节,可使BIC的结晶形态、结晶度、结晶机理发生明显的变化,并根据实验事实,对Avrami方程进行了修正.

关键词: 丁二烯-异戊二烯共聚物, 结晶行为, Avrami方程

Abstract: In this work, the crystal morphology and the crystallization process of butadiene-isoprene copolymers (BIC) have been observed by electron microscopy. The crystallinities and the crystallization rates were obtained quantitatively using a linear dilatometer. It was found that at the same temperature, the crystallization rate and the crystallinity decreased with the increase of isoprene content, and for the same sample BIC crystallized most rapidly at the temperature of -65℃— -45℃, According to the experimental results about the crystallization of BIC, the Avrami equation has been revised.

Key words: Butadicne-isoprenc copolymer, Crystallization behaviour, Avrami equation