可持续材料,改善生物降解性和性,由聚乳酸,茎粉和改性天然混合而成
Wasan Tessanan1,2, Pranee Phinyocheep1, Taweechai Amornsakchai1,2,3
1Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Payathai, Bangkok 10400, Thailand.
Polymers
|January 23, 2024
概括
这项研究通过添加茎粉 (TPSS) 和改性天然 (MNR) 来增强可生物降解的聚乳酸 (PLA) 塑料. 由此产生的混合物显示出改善的机械性能和生物降解性,用于可持续的塑料包装.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 可持续材料 可持续材料
背景情况:
- 聚乳酸 (PLA) 是一种重要的生物降解塑料,但它有脆性,疏水性和成本问题.
- 加入添加剂可以改善PLA的特性,但在实现所需的性能和兼容性方面仍然存在挑战.
研究的目的:
- 为了增强聚乳酸 (PLA) 的性能,以便在可生物降解塑料中得到更广泛的应用.
- 研究将热塑性茎粉 (TPSS) 和改性天然 (MNR) 纳入PLA混合物的影响.
主要方法:
- 开发了PLA的三元混合物,其中TPSS和MNR的百分比不同.
- 描述了混合物的机械性能 (模量,强度,冲击强度),形态和热性能 (玻璃过渡温度).
- 评估开发材料的耐水性和生物降解性.
主要成果:
- 仅仅添加TPSS就略有降低了机械性能,原因是接口粘附性差.
- 添加MNR (1-10 wt.%) 显著提高了PLA/TPSS混合物的伸展性和冲击强度.
- 与7%重量的MNR三元混合物显示,撞击强度增加了90%,并增强了兼容性,耐水性和生物降解性.
结论:
- 与TPSS和MNR混合的PLA提供了一条有希望的途径,以克服整洁的PLA的局限性.
- 这些生物基材料显示出可持续塑料包装应用的潜力.
- TPSS和MNR的协同效应提高了PLA的机械性能和环境凭据.
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