Thermal, Morphological, Mechanical, and Biodegradation Properties of Poly(L-lactide)-b-poly(ethylene glycol)-b-poly(L-lactide)/High-Density Polyethylene Blends.

热,形态学,机械,聚 （ L - 丙交酯 ） - b - 聚 （ 乙二醇 ） - b - 聚 （ L - 丙交酯 ） / 高密度聚乙烯共混物的生物降解性能。

• 影响指数: 4.967
• 发表时间: 2024 Jul 21
• 来源期刊: Polymers (Basel)
• DOI: 10.3390/polym16142078
• PMID: 39065395
• 文章类型: Journal Article
• 中科院分区: Q2
• 作者列表: Baimark Y,Srihanam P,Srisuwan Y

关键词: block copolymer; high-density polyethylene; poly(ethylene glycol); poly(lactic acid); polymer blends

Abstract

Polymer blends of poly(L-lactide)-b-poly(ethylene glycol)-b-poly(L-lactide) (PLLA-PEG-PLLA) and high-density polyethylene (HDPE) with different blend ratios were prepared by a melt blending method. The thermal, morphological, mechanical, opacity, and biodegradation properties of the PLLA-PEG-PLLA/HDPE blends were investigated and compared to the PLLA/HDPE blends. The blending of HDPE improved the crystallization ability and thermal stability of the PLLA-PEG-PLLA; however, these properties were not improved for the PLLA. The morphology of the blended films showed that the PLLA-PEG-PLLA/HDPE blends had smaller dispersed phases compared to the PLLA/HDPE blends. The PLLA-PEG-PLLA/HDPE blends exhibited higher flexibility, lower opacity, and faster biodegradation and bioerosion in soil than the PLLA/HDPE blends. Therefore, these PLLA-PEG-PLLA/HDPE blends have a good potential for use as flexible and partially biodegradable materials.

摘要

通过熔融共混法制备了不同共混比的聚（L-丙交酯）-b-聚（乙二醇）-b-聚（L-丙交酯）（PLLA-PEG-PLLA）和高密度聚乙烯（HDPE）的聚合物共混物。热，形态学,机械,不透明度,研究了PLLA-PEG-PLLA/HDPE共混物的生物降解性能，并与PLLA/HDPE共混物进行了比较。HDPE的共混提高了PLLA-PEG-PLLA的结晶能力和热稳定性;PLLA的这些性能没有得到改善。共混膜的形态表明,与PLLA/HDPE共混物相比,PLLA-PEG-PLLA/HDPE共混物具有较小的分散相。PLLA-PEG-PLLA/HDPE共混物表现出更高的灵活性，较低的不透明度，与PLLA/HDPE共混物相比，土壤中的生物降解和生物侵蚀更快。因此,这些PLLA-PEG-PLLA/HDPE共混物具有用作柔性和部分可生物降解材料的良好潜力。