期刊
EUROPEAN POLYMER JOURNAL
卷 142, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eurpolymj.2020.110127
关键词
Ring opening polymerization; Polycaprolactone; pyrolyzed Zn-DABCO MOFs; Porous carbon; Heterogeneous catalyst
资金
- State Key Lab of Advanced Technology for Materials Synthesis and Processing (Wuhan University of Technology)
The ZnO dispersed in an N-doped carbon matrix was successfully derived and utilized as a catalyst for the polymerization of E-caprolactone. The catalyst displayed excellent activity and stability, leading to high molecular weight cyclic polycaprolactone.
For the first time, ZnO dispersed in an N-doped carbon matrix (ZnO/NCs) was derived from the controlled thermal treatment of Zn-DABCO and utilized as a robust heterogeneous catalyst for the polymerization of E-caprolactone. The as-prepared ZnO/NCs catalysts were characterized using TEM, SEM, Raman spectroscopy, XPS, XRD, TPD and N2 adsorption. The catalyst displayed excellent activity towards the E-caprolactone polymerization reaction, following the trend, Zn/NC-1000 < Zn/NC-800 < Zn/NC-600. The polymerization was catalyzed co-operatively by both acid and basic sites present in the ZnO/NCs, leading to high molecular weight cyclic polycaprolactone (c-PCL). Furthermore, the catalyst retained its stability and activity after being used for seven cycles without showing any significant loss in performance.
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