| Ring-opening Copolymerization of ε-Caprolactone and δ-Valerolactone Catalyzed by a 2,6-Bis(amino)phenol Zinc Complex |
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| 作者姓名： | Qian Hu Su-Yun Jie Pierre Braunstein Bo-Geng Li |
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| 作者单位： | State Key Laboratory of Chemical Engineering;Universitéde Strasbourg |
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| 基金项目： | financially supported by the National Key R&D Program of China (No. 2016YFC1100801);the State Key Laboratory of Chemical Engineering (No. SKL-ChE-18D01) |
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| 摘 要： | In combination with methyllithium,a 2,6-bis(amino)phenol zinc complex 1 was used in the ring-opening polymerization ofδ-valerolactone in the absence or presence of benzyl alcohol and showed high efficiency,mainly producing cyclic and linear polyvalerolactones,respectively.On the basis of homopolymerization,the ring-opening copolymerization ofε-caprolactone andδ-valerolactone was investigated.The P(CL-co-VL)random copolymers,PCL-b-PVL and PVL-b-PCL diblock copolymers,were prepared by varying the feeding strategy(premixing or sequential feeding).The copolymer composition was adjusted by varying the feeding ratio of two monomers.The structure and thermal properties of obtained polymers were characterized by GPC,1 H-NMR,13 C-NMR,MALDI-TOF mass spectroscopy,and DSC,respectively.
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| 关 键 词： | Zn complex COPOLYMERIZATION Block copolymer Random copolymer |
Ring-opening Copolymerization of ε-Caprolactone and δ-Valerolactone Catalyzed by a 2,6-Bis(amino)phenol Zinc Complex |
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| Qian Hu,Su-Yun Jie,Pierre Braunstein,Bo-Geng Li.Ring-opening Copolymerization of ε-Caprolactone and δ-Valerolactone Catalyzed by a 2,6-Bis(amino)phenol Zinc Complex[J].Chinese Journal of Polymer Science,2020(3):240-247,I0006. |
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| Abstract: | In combination with methyllithium, a 2,6-bis(amino)phenol zinc complex 1 was used in the ring-opening polymerization of δ-valerolactone in the absence or presence of benzyl alcohol and showed high efficiency, mainly producing cyclic and linear polyvalerolactones,respectively. On the basis of homopolymerization, the ring-opening copolymerization of ε-caprolactone and δ-valerolactone was investigated.The P(CL-co-VL) random copolymers, PCL-b-PVL and PVL-b-PCL diblock copolymers, were prepared by varying the feeding strategy(premixing or sequential feeding). The copolymer composition was adjusted by varying the feeding ratio of two monomers. The structure and thermal properties of obtained polymers were characterized by GPC, 1 H-NMR, 13 C-NMR, MALDI-TOF mass spectroscopy, and DSC, respectively. |
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| Keywords: | Zn complex Copolymerization Block copolymer Random copolymer |
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