Citation: Qing-Zhong Guo, Yi Du, Jun-Fang Guo, Liang Li, Jiang-Yu Wu, Guo-Ping Yan. Synthesis and ring-opening copolymerization of cyclic aryl ester dimers[J]. Chinese Chemical Letters, ;2013, 24(10): 897-900. shu

Synthesis and ring-opening copolymerization of cyclic aryl ester dimers

1.
School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430073, China

Corresponding author: Jun-Fang Guo,
Received Date: 1 April 2013
Available Online: 20 May 2013
Fund Project: The work described in this paper was supported by grants from the National Natural Science Foundation of China (Nos. 21001085, 20904045) (Nos. 21001085, 20904045) the Natural Science Foundation of Hubei Province (No. 2010CDB11104) (No. 2010CDB11104)Doctoral Program Foundation of Wuhan Institute of Technology (No. 11105032). (No. 11105032)

Two kinds of cyclic aryl ester dimers have been synthesized by reaction of phthaloyl dichloride with bisphenols via interfacial polycondensation. The cyclic dimers readily undergo anionic ring-opening polymerization or copolymerization in the melt by using sodium benzoate as the initiator, producing linear, high molecular weight polyesters. The contents of cyclic dimers in the homopolymers P₁, P₂, and copolymer P₁₂ are 13.7%, 10.2%, 2.9%, respectively, which indicates that ring-opening copolymerization of cyclic dimers may impel the conversion of cyclic dimers and decrease the content of cyclic dimers in the resulting copolymer. Moreover, the isothermal chemorheology of the ring-opening copolymerization of cyclic dimers indicates that the reactivemoltenmixture has low shear viscosity and the viscosity increases slowly in the initial stage of ring-opening polymerization.
- Ring-opening polymerization,
- Cyclic oligomer,
- Rheological behavior
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沈阳化工大学材料科学与工程学院沈阳 110142