中华医学超声杂志

应用化学 ›› 1994, Vol. 0 ›› Issue (2): 57-61.

• 研究论文 • 上一篇    下一篇

双羧基封端聚己内酯的合成与表征

张其锦1, 王冰1, 罗筱烈1, 汪志勇2   

  1. 1. 中国科学技术大学材料科学与工程系 合肥 230026;
    2. 中国科学技术大学化学物理系 合肥
  • 收稿日期:1993-08-18 修回日期:1993-12-15 出版日期:1994-04-10 发布日期:1994-04-10

Synthesis and Characterization of Poly(ε-Caprolactone) with Two Terminated Carboxyl Groups

Zhang Qijin1, Wang Bing1, Luo Xiaolie1, Wang Zhiyong2   

  1. 1. Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026;
    2. Department of Chemical Physics, University of Science and Technology of China, Hefei
  • Received:1993-08-18 Revised:1993-12-15 Published:1994-04-10 Online:1994-04-10

PDF

993

被引次数

22 | 4

摘要： 在氮气氛中和丁二酸存在下,进行了ε-己内酯的开环聚合.IR, 1H NMR和13C NMR测定结果表明,聚合反应产物为双羧基封端的聚ε-己内酯。产物的分子量随二元酸用量的减少而增加,在酸/内酯摩尔比为1:14,225℃聚合3小时,产物的分子量达到最大值,Ma=3×103。

关键词: ε－己内酯, 开环聚合, 丁二酸

Abstract: ε-Caprolactone was rapidly polymerizaed at 225℃ in the presence of succinic acidunder nitrogen atmosphere. The results of polymer characterization through IR, 1H NMR and 13C NMR suggested that the acid has been incorporated into poly(ε-caprolactone) chain, giving two terminal carboxylic acid groups. The VPO,1H NMR and the end group titration methods have been used to determine the molecular weight of the polymers. It is found that the molecular weights of the polymers increased with the increase of the ratio of ε-caprolactam to succinic acid and after 3 hours of reaction it reached a maximum value,Ma=3×103.

Key words: ε-caprolactone, ring-opening polymerization, sliccinic acid

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