Efficient ring-opening polymerization of epsilon-caprolactone catalyzed by iron(III) chloride under mild reaction conditions

被引:0
作者
Hai-Bo Wu
Xian-Tai Zhou
Xiao-Wu Zhou
Yan-Xiong Fang
机构
[1] Guangdong University of Technology,School of Chemical Engineering and Light Industry
[2] Sun Yat-sen University,School of Chemical Engineering and Technology
[3] Huizhou Research Institute,undefined
[4] Sun Yat-sen University,undefined
来源
Journal of Polymer Research | 2024年 / 31卷
关键词
Ring-opening polymerization; Epsilon-caprolactone; Iron(III) chloride; Poly(epsilon-caprolactone);
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摘要
As a biodegradable polyester, the commercialized synthesis protocol of poly(ε-caprolactone) (PCL) under mild conditions is of great significance and attractive. Herein, the ring-opening polymerization (ROP) of ε-caprolactone (ε-CL) using FeCl3 catalyst and benzyl alcohol (BnOH) as the initiator was developed. FeCl3 has been proved to be an efficient catalyst for the ROP of ε-CL under mild conditions. The conversion of ε-CL to PCL was 98.8% at 60 °C within 4 h, with number-average molecular weight (Mn) and dispersity (PDI) of 1.65 × 104 g/mol and 1.28, respectively. Moreover, a coordination-insertion ring-opening polymerization mechanism mediated by FeCl3 was proposed. Overall, this work is expected to provide a feasible industrial method for the preparation of PCL from the direct aerobic oxidation of cyclohexanone.
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