氧化卡达油酸 (ECD-OA) 作为有效的生物基聚乳酸 (PLA) 链延长剂
Wei Luo1, Yang Yang1, Yunxuan Weng1
1Department of Materials Science and Engineering, Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, Beijing Technology and Business University, Beijing 100048, China.
International journal of biological macromolecules
|October 26, 2024
概括
氧化卡达诺酸盐 (ECD-OA) 通过增加分子量和提高机械和热性能来增强聚乳酸 (PLA) 的特性. 这种生物基链延长器还可以增强PLA.
科学领域:
- 聚合物科学与工程 聚合物科学与工程
- 材料科学 材料科学 材料科学
- 可持续的高分子.
背景情况:
- 在加工过程中,聚的降解会导致卡基和基末组,从而损害机械性能.
- 彻底干燥和链延长器对于保持或增强聚合物的分子量至关重要.
- 环氧烯酸盐和异酸盐是常见的链延长剂,但正在寻求生物基替代品.
研究的目的:
- 引入环氧化卡达油酸 (ECD-OA) 作为一种新的生物基链延长剂,用于聚乳酸 (PLA).
- 为了比较ECD-OA与商业链延长剂的疗效,卡多利特NC514.
- 评估ECD-OA对PLA分子量,机械性能,热稳定性和生物降解性的影响.
主要方法:
- 环氧化卡达诺酸 (ECD-OA) 的合成和表征.
- 在1小时内将ECD-OA纳入PLA配方.
- 分子重量 (Mw),融化流速,热降解温度,破裂时的延长和抗撕裂的分析.
- 评估酶性降解速度.
主要成果:
- ECD-OA使PLA的分子量从15.3×104增加到17.1×104g/mol (11.8%的效率).
- 融化流速从9.9降至5.0g/10分钟;热降解温度增加了5.7°C.
- 在抗破裂和撕裂的延伸中观察到显著的改善.
- 与纯净的PLA相比,使用ECD-OA的PLA对酶降解的敏感性增加.
结论:
- 通过化学反应,ECD-OA有效地扩展了PLA分子链,增强了纠.
- 生物基链延长器显著改善了PLA的机械和热性能.
- ECD-OA增强了PLA的生物降解性,为聚合物修饰提供了一个可持续的途径.
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