一个灵活的策略,使生物衍生阻燃剂在聚 (乳酸) 复合材料中具有显著增强的界面兼容性
Lixiang Yi1, Jun Lu1, Juanjuan Su1
1College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China.
International journal of biological macromolecules
|May 11, 2024
概括
生物衍生阻燃剂可以增强可生物降解的聚乳酸 (PLA) 复合材料. 一种新的环氧修饰阻燃剂 (PA@CS-TGIC) 提高了PLA的阻燃性和机械强度,减少了对环境的影响.
科学领域:
- 聚合物科学 聚合物科学
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
背景情况:
- 可生物降解的聚 (乳酸) (PLA) 复合材料提供了环境效益,但面临着阻燃性和机械性能降解的挑战.
- 现有的生物基阻燃剂往往缺乏有效性,并对PLA的机械性能产生负面影响.
研究的目的:
- 为PLA复合材料开发一个有效和环保的阻燃系统.
- 为了提高PLA的阻燃性能和机械强度.
- 解决目前生物基阻燃剂在PLA应用中的局限性.
主要方法:
- 合成了一种环氧修饰的生物衍生阻燃剂,PA@CS-TGIC (PCT),通过将甘油三异酸盐 (TGIC) 纳入植物酸 (PA) 和酸盐 (CS) 自组合.
- 将PCT与环氧改性聚酸盐 (MAPP) 合成PLA矩阵.
- 使用限制氧指数 (LOI) 和UL-94测试评估的阻燃性.
- 通过拉伸强度测量评估机械性能.
主要成果:
- PCT阻燃剂在PLA矩阵中表现出良好的分散和强大的界面粘附.
- 添加3%的PCT/MAPP显著改善了阻燃性,达到28.8%的LOI和UL-94 V-0等级.
- 在燃烧过程中,化液滴的形成大大减少.
- 3%的PCT/MAPP-PLA复合材料的拉伸强度与纯PLA相比增加了10.8%,达到67.0 MPa.
结论:
- 开发的环氧改性生物衍生阻燃剂 (PCT) 有效地提高了PLA复合材料的阻燃性,而不损害机械性能.
- 这种方法为创造高性能,环保的PLA材料提供了一个有希望的途径.
- PCT和MAPP之间的协同效应有助于改善焦炭形成和整体阻燃性能.
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