Preparation and properties of flexible poly(lactic acid) blend foams

IF 1.3 4区医学 Q4 MATERIALS SCIENCE, BIOMATERIALS

Cellular Polymers Pub Date : 2018-07-01 DOI:10.1177/0262489318797514

Liu Wei, He Shicheng, Zhou Hongfu

引用次数: 1

Abstract

High-performance poly(lactic acid) (PLA) foam has been recognized as a promising material because of its biodegradability. However, low flexibility and foamability of PLAs has limited its use in different fields. In this study, a blend-toughening technology was used to toughen PLA and prepare flexible foams. The mechanical properties of PLA blends were evaluated, and the cellular structure of these foaming blends was characterized. The results show that the blending components significantly affected the overall mechanical properties and foaming behavior of PLA. The toughness of PLA was enhanced by adding poly(butylene adipate-co-terephthalate) (PBAT) and rigid particles. The rheological behavior of PLA was also affected by adding PBAT. Therefore, the cellular structure of the PLA foams was affected. A constitutive model was also used to fit the experimental results of the compression property of the PLA foam.

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柔性聚乳酸共混泡沫的制备与性能

高性能聚乳酸（PLA）泡沫由于其生物降解性而被认为是一种很有前途的材料。然而，PLA的低柔性和发泡性限制了其在不同领域的应用。本研究采用共混增韧技术对聚乳酸进行增韧，制备柔性泡沫。对PLA共混物的力学性能进行了评价，并对其泡沫结构进行了表征。结果表明，共混组分对PLA的整体力学性能和发泡行为有显著影响。通过添加聚己二酸丁二醇酯-共对苯二甲酸酯（PBAT）和刚性粒子，提高了PLA的韧性。PBAT的加入也影响了PLA的流变行为。因此，PLA泡沫的细胞结构受到影响。采用本构模型对PLA泡沫压缩性能的实验结果进行了拟合。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Cellular Polymers 工程技术-材料科学：生物材料

CiteScore

3.10

自引率

0.00%

发文量

审稿时长

3 months

期刊介绍： Cellular Polymers is concerned primarily with the science of foamed materials, the technology and state of the art for processing and fabricating, the engineering techniques and principles of the machines used to produce them economically, and their applications in varied and wide ranging uses where they are making an increasingly valuable contribution. Potential problems for the industry are also covered, including fire performance of materials, CFC-replacement technology, recycling and environmental legislation. Reviews of technical and commercial advances in the manufacturing and application technologies are also included. Cellular Polymers covers these and other related topics and also pays particular attention to the ways in which the science and technology of cellular polymers is being developed throughout the world.