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首页> 外文期刊>繊維学会誌 >Preparation of Chain-Extended Poly(hexamethylene/pentamethylene carbonate)s and Their Block Copolymerization with Poly-L-lactide into Partly Biobased Thermoplastic Elastomers
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Preparation of Chain-Extended Poly(hexamethylene/pentamethylene carbonate)s and Their Block Copolymerization with Poly-L-lactide into Partly Biobased Thermoplastic Elastomers

机译：扩链聚（六亚甲基/五亚甲基碳酸酯）的制备及其与聚-L-丙交酯的嵌段共聚合为部分生物基热塑性弹性体

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摘要

A commercially available carbonate oligomer, poly(hexamethylene/ pentamethylene carbonate) (PHPC), was found to involve various minor units that had been formed during the ester-exchanging polycondensation of ethylene carbonate and a mixture of 1,6-hexanediol and 1,5-pentanediol. This PHPC oligomer was chain-extended by using diphenyl carbonate as chain extender and then subjected to tin-catalyzea nng-opening polymerization of L-lactide to prepare ABA tri-block copolymers consisting of poly-L-lactide (PLLA) and PHPC as the hard A and soft B blocks, respectively. With the chain-extended PHPC as the macro-initiators, the molecular weights of the resultant copolymers became significantly higher even at increased contents of PHPC. The tri-block copolymers obtained were fabricated into polymer films by solution casting, and their properties were analyzed. It was revealed that the tri-block copolymers PLLA-PHPC-PLLA can be novel thermoplastic elastomers that are environmentally friendly in terms of utilization of carbon dioxide as feedstock.
机译：发现一种可商购的碳酸酯低聚物，聚（六亚甲基/五亚甲基碳酸酯）（PHPC），涉及碳酸亚乙酯与1,6-己二醇和1,5的混合物进行酯交换缩聚过程中形成的各种次要单元。 -戊二醇。通过使用碳酸二苯酯作为扩链剂对该PHPC低聚物进行扩链，然后进行L-丙交酯的锡催化开环聚合反应，以制备由聚L-丙交酯（PLLA）和PHPC组成的ABA三嵌段共聚物。硬A和软B块。用扩链的PHPC作为大分子引发剂，即使在PHPC含量增加的情况下，所得共聚物的分子量也显着提高。通过溶液流延将获得的三嵌段共聚物制成聚合物膜，并分析其性能。揭示了三嵌段共聚物PLLA-PHPC-PLLA可以是新颖的热塑性弹性体，其在利用二氧化碳作为原料方面是环境友好的。

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  • 来源
    《繊維学会誌》 |2015年第2期|127-140|共14页
  • 作者

    Shuhei Kanmuri; Koji Kobayashi; Yoshiharu Kimura; Kazunari Masutani;

  • 作者单位

    Department of Biobased Materials Science, Kyoto Institute of Technology Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan;

    TOYOBO Co., Ltd. Research Center, Katata, Otsu, Shiga 520-0292;

    Japan;

    Department of Biobased Materials Science, Kyoto Institute of Technology Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan;

    Center for Fiber and Textile Science, Kyoto Institute of Technology Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan;

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