高等学校化学学报

高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (9): 1492.

• 研究简报 • 上一篇    

四氢呋喃聚合向丁二酸酐链转移的研究

栗方星1, 马克勤1, 陈琰1, 文佳1, 霍玉杰2   

  1. 1. 南开大学化学系, 天津, 300071;
    2. 天津安普公司
  • 收稿日期:1995-09-18 出版日期:1996-09-24 发布日期:1996-09-24
  • 通讯作者: 栗方星,男,50岁,副教授.
  • 作者简介:栗方星,男,50岁,副教授.

Studies on Chain Transfer to Succinic Anhydride of THF Polymerization

LI Fang-Xing1, MA Ke-Qin1, CHEN Yan1, WEN Jia1, HUO Yu-Jie2   

  1. 1. Department of Chemistry, Nankai University, Tianjin, 300071;
    2. Ample. Co., LTD., Tianjin
  • Received:1995-09-18 Online:1996-09-24 Published:1996-09-24

PDF (PC)

关键词: THF, TDI, CH3COSbCl6, 表观聚合速率常数

Abstract: During the polymerization process of THF, active center can transfer to succinic anhydride and produce polyether-ester block copolymer.If TDIis added into the system,the relative velocity of polymerization and chain transfer reaction can be controlled.It is found that when the molar ratio of TDI/catalyst is 1, the polymerization can be accelerated, while the transfer rate decreases during the latter period of the reaction .However, when this ratio is 5/1, the propagation rate changes little, but the transfer rate increases.In the systems without TDI, with one time and five times moles of TDIas the mole of catalyst at 8℃, the apparent propagation rate constants of THF, kp are 5.55×10-3,7.10× 10-3 and 8.10×10-3 L/(mol·s), respectively; the transfer rate constants ktr are 1.33 × 10-3,0.43 × 10-3 and 5.55×10-3 L/(mol·s), respectively.

Key words: THF, TDI, CH3COSbCl6, Apparent polymerization rate constant

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