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首页> 外文期刊>Journal of Applied Polymer Science >Morphology, Structure, and Properties of Poly(lactic acid) Microporous Films Containing Poly(butylene terephthalate) Fine Fibers Fabricated by Biaxial Stretching
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Morphology, Structure, and Properties of Poly(lactic acid) Microporous Films Containing Poly(butylene terephthalate) Fine Fibers Fabricated by Biaxial Stretching

机译：包含通过双轴拉伸制备的聚对苯二甲酸丁二醇酯细纤维的聚乳酸微孔薄膜的形态，结构和性能

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摘要

The effects of size and shape, i.e., sphere and fiber, of dispersed poly(butylene terephthalate) (PBT) in poly(lactic acid) (PLA) matrix on the morphology and porous structure of the biaxially stretched films are comparatively investigated. Scanning electron microscope results confirm that the PBT fine fibers can be produced by melt-stretching following by fast quenching. Rheological characterization reveals the random network structure of PBT fibers. Further, the stretched films composed of spherical PBT particles show the ellipsoidal microvoids due to the interfacial debonding, and the void size relates to the particle size of PBT. However, size of PBT droplets does not influence the void content of the stretched films. The void content considerably increases for equibiaxial deformation as compared with planar deformation, particularly at high draw ratio. Additionally, the stretched films containing fibrous dispersion exhibit the nonaffine behavior and the highest void content of 8%, which is probably due to the localized deformation between fibers. (C) 2014 Wiley Periodicals, Inc.
机译：比较研究了分散在聚乳酸（PLA）基质中的聚对苯二甲酸丁二醇酯（PBT）的大小和形状，即球体和纤维对双轴拉伸膜的形态和多孔结构的影响。扫描电子显微镜结果证实，可以通过熔融拉伸随后快速淬火来生产PBT细纤维。流变学特性揭示了PBT纤维的随机网络结构。此外，由球形PBT颗粒组成的拉伸膜由于界面脱粘而显示出椭圆形微孔，并且空隙尺寸与PBT的粒径有关。但是，PBT液滴的大小不会影响拉伸薄膜的空隙率。与平面变形相比，对于等双轴变形，空隙含量显着增加，尤其是在高拉伸比下。另外，含有纤维分散体的拉伸膜表现出非仿射行为，并且最高的空隙率为8％，这可能是由于纤维之间的局部变形。 （C）2014威利期刊公司

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