Citation:
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, 11(2): 57-61.
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ε-Caprolactone was rapidly polymerizaed at 225℃ in the presence of succinic acid under 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,Mn=3×103.
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Keywords:
- ε-caprolactone,
- ring-opening polymerization,
- sliccinic acid
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