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首页> 外文期刊>Journal of Polymers and the Environment >Modification of Poly(L-lactide) via a Pectinate Polymethylphenylsilane- co-poly(ε-caprolactone)
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Modification of Poly(L-lactide) via a Pectinate Polymethylphenylsilane- co-poly(ε-caprolactone)

机译：通过果胶聚甲基苯基硅烷 - 共聚（ε-己内酯）改性聚（L-丙交酯）

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摘要

To solve the problem of the hard and brittle mechanical properties of poly(l-lactide) (PLLA), a novel pectinate polymethylphenylsilane-co-poly(epsilon-caprolactone) (PCL-PMPS-PCL) has been designed to modify PLLA via the hydrolysis polycondensnsation of methylphenyldimethoxysilane and ring-opening polymerization of epsilon-caprolactone. The triblock copolymer is characterized with (HNMR)-H-1 and GPC. It is harmonized with PLLA in chloroform to make smooth blending film. Incorporation of PCL-PMPS-PCL lowers T-g of PLLA, enhances the macromolecular mobility, and facilitates PLLA to form defective crystals. Compared to the brittle PLLA, the cross section of blends is rough and uneven. With the blending amount of PCL-PMPS-PCL going up, the tensile strength curve has a downward glacis, while the elongation at a break climbs upward, and reaches 25% at 10wt%, exhibiting that the typical characteristics of ductile material. At the same time, the tensile strength for 10wt% PCL-PMPS-PCL/PLLA reserve about 60MPa, so PCL-PMPS-PCL can serve as a candidate of plasticizing PLLA.
机译：为了解决聚（L-丙交酯）（PLLA）的硬质脆性机械性能（PLLA）的问题，设计了一种新型果胶聚甲基苯基硅烷 - 共聚（ε-己内酯）（PCL-PMPS-PCL），设计用于通过该方法改变PLLA ε-己内酯的甲基苯基二甲氧基硅烷和开环聚合的水解多胶质。三嵌段共聚物的特征在于（HNMR）-H-1和GPC。它与氯仿中的PLLA统一，以制备光滑的混合膜。掺入PCL-PMPS-PCL降低了PLLA的T-G，增强了大分子迁移率，并促进PLLA形成缺陷的晶体。与脆性PLLA相比，共混物的横截面粗糙，不均匀。随着PCL-PMPS-PCL的混合量上升，拉伸强度曲线具有向下的甘油，而突破的伸长率向上爬升，并且在10wt％下达到25％，表现出韧性材料的典型特性。同时，10wt％pcl-pmps-pcl / plla储备的拉伸强度约为60mpa，因此pcl-pmps-pcl可以用作塑化plla的候选物。

著录项

  • 来源
    《Journal of Polymers and the Environment》 |2019年第7期|1557-1563|共7页
  • 作者

    Ren Yajun; Wang Lei; Han Libin; Xia Wenlong; Guo Huiling; Song Xiaofeng;

  • 作者单位

    Changchun Univ Technol Sch Chem Engn Changchun 130012 Jilin Peoples R China;

    Changchun Univ Technol Sch Chem Engn Changchun 130012 Jilin Peoples R China;

    Changchun Univ Technol Sch Chem Engn Changchun 130012 Jilin Peoples R China;

    Changchun Univ Technol Sch Chem Engn Changchun 130012 Jilin Peoples R China;

    Changchun Univ Technol Sch Chem Engn Changchun 130012 Jilin Peoples R China;

    Changchun Univ Technol Sch Chem Engn Changchun 130012 Jilin Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Polysiloxanes; Blend; Toughness; Poly(l-lactide);

    机译：聚硅氧烷;混合;韧性;聚（L-丙交酯）;

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