PROPERTIES OF POLY(p‐DIOXANONE‐URETHANE) COPOLYMERS WITH CONTROLLABLE STRUCTURES

Yan Zhou Center for Degradable and Flame‐Retardant Polymeric Materials (ERCEPM‐MoE), College of Chemistry, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China and Chemistry and Chemical Engineering Department, Mianyang Normal University, Mianyang, China

Jing‐Jing Zhang Center for Degradable and Flame‐Retardant Polymeric Materials (ERCEPM‐MoE), College of Chemistry, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China

Zhi‐Cheng Qiu Center for Degradable and Flame‐Retardant Polymeric Materials (ERCEPM‐MoE), College of Chemistry, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China

Qiang Zeng Center for Degradable and Flame‐Retardant Polymeric Materials (ERCEPM‐MoE), College of Chemistry, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China

Jing‐Jing Chang Center for Degradable and Flame‐Retardant Polymeric Materials (ERCEPM‐MoE), College of Chemistry, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China

Ke‐Ke Yang Center for Degradable and Flame‐Retardant Polymeric Materials (ERCEPM‐MoE), College of Chemistry, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, ChinaCorrespondence[email protected]

Yu‐Zhong Wang Center for Degradable and Flame‐Retardant Polymeric Materials (ERCEPM‐MoE), College of Chemistry, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China

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Abstract

A series of poly(p‐dioxanone‐urethane) (PPDO‐PU) copolymers were produced by chain extending reaction of poly(p‐dioxanone) (PPDO) diol with 1,6‐hexamethylene diisocyanate (HDI) and toluene‐2,4‐diisocyanate (TDI). The chain structure of the copolymers can be easily controlled by varying the molecular weight of PPDO diol and the structure of diisocyanate. Several instruments such as DSC, POM, TG, and Capillary Rheometer have been employed to investigate the structure–properties relationship of PPDO‐PU copolymers. The results show that varying the structure and the content of chain extenders will influence the crystallization behavior, thermal stability, mechanical performance, and rheological behavior of the products significantly. The insertion of urethane groups into PPDO polymer chains enhances the mechanical performance of the copolymers.

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ACKNOWLEDGMENTS

This work was supported financially by the National Science Foundation of China (50873064), the program for New Century Excellent Talents in University (NCET‐07‐0586), and the National Science Fund for distinguished Young Scholars (50525309).

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PROPERTIES OF POLY(p‐DIOXANONE‐URETHANE) COPOLYMERS WITH CONTROLLABLE STRUCTURES

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PROPERTIES OF POLY(p‐DIOXANONE‐URETHANE) COPOLYMERS WITH CONTROLLABLE STRUCTURES

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