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首页> 外文期刊>Journal of Applied Polymer Science >Mechanical Response of Poly(lactic acid)-Based Packaging Under Liquid Exposure
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Mechanical Response of Poly(lactic acid)-Based Packaging Under Liquid Exposure

机译：液体暴露下基于聚乳酸的包装的机械响应

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摘要

The objective of this study was to examine the mechanical behavior of poly(lactic acid)-based packaging, which was subjected to an external load while undergoing dimensional and material property changes due to the diffusion of liquid through its thickness. We defined the characteristics of the material response by taking into account the changes in the properties due to liquid sorption. The material properties at any given location and time were dependent on the liquid content. In this article, we present the evolution of the mechanical behavior using a numerical stress model that accounts for the effects of the time, liquid content, temperature, and swelling-induced strain. We assumed that the deformation depended on the liquid concentration, but the liquid concentration could be obtained without the knowledge of the stress or strain.
机译：这项研究的目的是研究基于聚乳酸的包装的机械性能，该包装在受到外部载荷的同时由于液体沿厚度方向的扩散而发生尺寸和材料性能变化。我们通过考虑由于液体吸附而引起的特性变化来定义材料响应的特性。在任何给定位置和时间的材料特性都取决于液体含量。在本文中，我们使用数值应力模型介绍了力学行为的演变，该模型考虑了时间，液体含量，温度和溶胀诱发应变的影响。我们假定变形取决于液体浓度，但是在不知道应力或应变的情况下可以获得液体浓度。

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