Journal
CHINESE JOURNAL OF POLYMER SCIENCE
Volume 38, Issue 3, Pages 240-247Publisher
SPRINGER
DOI: 10.1007/s10118-020-2347-4
Keywords
Zn complex; Copolymerization; Block copolymer; Random copolymer
Categories
Funding
- National Key R&D Program of China [2016YFC1100801]
- State Key Laboratory of Chemical Engineering [SKL-ChE-18D01]
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In combination with methyllithium, a 2,6-bis(amino)phenol zinc complex 1 was used in the ring-opening polymerization of delta-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 epsilon-caprolactone and delta-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, H-1-NMR, C-13-NMR, MALDI-TOF mass spectroscopy, and DSC, respectively.
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