Ring-opening Polymerization of ε-Caprolactone Catalyzed by Rare Earth Trifluoromethanesulfonate [Ln(OTf)3] Catalysts

Chem. J. Chinese Universities

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Ring-opening Polymerization of ε-Caprolactone Catalyzed by Rare Earth Trifluoromethanesulfonate [Ln(OTf)₃] Catalysts

ZHU Wei-Pu, TONG Xiao-Wei, SHEN Zhi-Quan*

Key Laboratory of Macromolecule Synthesis and Functionalization of Ministry of Education, Institute of Polymer Science, Zhejiang University, Hangzhou 310027, China

Received:2006-11-26 Revised:1900-01-01 Online:2007-06-10 Published:2007-06-10
Contact: SHEN Zhi-Quan

Abstract

Abstract: The ring-opening polymerization of ε-caprolactone(CL) catalyzed by rare earth trifluoromethanesulfonate [Ln(OTf)₃](Ln= Nd, Er, La) catalysts was reported. The influences of rare earth element, catalyst concentration, polymerization time and temperature on the monomer conversion and polymer molecule weight were investigated. These catalysts exhibit a high catalytic activity with single active center. The polymerization may proceed via active chain end cationic machanism.

Key words: Rare earth trifluoromethanesulfonate, ε-Caprolactone, Ring-opening polymerization

CLC Number:

O631

TrendMD:

ZHU Wei-Pu, TONG Xiao-Wei, SHEN Zhi-Quan*. Ring-opening Polymerization of ε-Caprolactone Catalyzed by Rare Earth Trifluoromethanesulfonate [Ln(OTf)₃] Catalysts [J]. Chem. J. Chinese Universities, doi: .

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Ring-opening Polymerization of ε-Caprolactone Catalyzed by Rare Earth Trifluoromethanesulfonate [Ln(OTf)₃] Catalysts

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