木质素和 TiO2 对聚乳酸复合材料结构和性能的影响模拟分析与实验结果的结合

IF 2.7 3区 化学 Q2 POLYMER SCIENCE Journal of Applied Polymer Science Pub Date : 2024-09-10 DOI:10.1002/app.56267
Man Liu, Tong Song, Xuan Wu, Qian Li, Shiwei Wang
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引用次数: 0

摘要

本文制备了含有不同比例二氧化钛(TiO2)和木质素(Lg)的发泡聚乳酸(PLA)复合材料。分子动力学模拟分析表明,填料提高了复合材料的机械性能。聚乳酸/Lg 和聚乳酸/二氧化钛复合材料的最佳发泡温度分别为 110°C 和 100°C。应用超临界二氧化碳发泡工艺得到了发泡复合材料,并对其力学性能和热性能进行了分析。结果表明,TiO2 的加入提高了聚乳酸复合材料的熔点和压缩性能。此外,Lg 的加入提高了复合材料的分子链流动性、发泡倍数和压缩强度。
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Effect of lignin and TiO2 on the structure and properties of PLA composites: Combine of simulation analysis and experimental results

In this paper, the foamed polylactic acid (PLA) composites with different ratios of titanium dioxide (TiO2) and lignin (Lg) are prepared. Molecular dynamics simulation analysis indicates that the fillers enhance the mechanical properties of the composites. The optimal foaming temperatures for PLA/Lg and PLA/TiO2 composites are found to be 110 and 100°C, respectively. The supercritical carbon dioxide foaming process is applied to get the foamed composites, and their mechanical and thermal properties are analyzed. The results show that the addition of TiO2 improves the melting point and compression properties of the PLA composites. Furthermore, the inclusion of Lg increases the molecular chain mobility, foaming multiplicity, and compression strength of the composite materials.

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来源期刊
Journal of Applied Polymer Science
Journal of Applied Polymer Science 化学-高分子科学
CiteScore
5.70
自引率
10.00%
发文量
1280
审稿时长
2.7 months
期刊介绍: The Journal of Applied Polymer Science is the largest peer-reviewed publication in polymers, #3 by total citations, and features results with real-world impact on membranes, polysaccharides, and much more.
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