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

Chinese Journal of Applied Chemistry ›› 1994, Vol. 0 ›› Issue (2): 57-61.

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

Zhang Qijin¹, Wang Bing¹, Luo Xiaolie¹, Wang Zhiyong²

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

Abstract

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,M_a=3×10³.

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

Zhang Qijin, Wang Bing, Luo Xiaolie, Wang Zhiyong. Synthesis and Characterization of Poly(ε-Caprolactone) with Two Terminated Carboxyl Groups[J]. Chinese Journal of Applied Chemistry, 1994, 0(2): 57-61.

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

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