高强度固的聚 (乳酸) /聚 (丁烯基酸盐-甲酸盐) 混合物在现场由MMA-co-GMA共聚合物与不同的环氧基含量相兼容
Pengwu Xu1, Ce Zhang1, Deyu Niu1
1The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
International journal of biological macromolecules
|May 28, 2023
概括
这项研究开发了一种低成本的甲基甲基酸盐-co-glycidyl甲基酸盐 (MG) 共聚合物,作为聚 (乳酸) /聚 (丁酸盐-甲基酸盐) (PLA/PBAT) 混合物的反应兼容剂. 优化的兼容器显著改善了PLA/PBAT包装材料的机械性能和相位大小.
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
- 化学工程是化学工程的重要组成部分.
背景情况:
- 聚 (乳酸) (PLA) 和聚 (丁基酸) (PBAT) 之间的不良兼容性阻碍了它们在包装行业的应用.
- 使用简单的方法开发高效,低成本的兼容器仍然是一个重大挑战.
研究的目的:
- 为了合成甲基甲基酸盐-co-glycidyl甲基酸盐 (MG) 共聚物作为PLA/PBAT混合物的反应兼容剂.
- 研究环氧基含量和MG度对混合物形态和特性的影响.
- 优化兼容剂,以提高生物降解包装的性能.
主要方法:
- 合成具有不同环氧基含量的MG共聚物.
- 化混合PLA/PBAT与MG兼容剂.
- 阶段形态和机械性能 (拉伸强度,断裂性) 的表征.
主要成果:
- MG共聚合物有效地迁移到接口并与PBAT接种,形成PLA-g-MG-g-PBAT聚合物.
- 在MMA:GMA摩尔比率为3:1 (M3G1) 的情况下,获得了最佳的兼容性.
- 1重%的M3G1添加增加了34%的拉伸强度和87%的断裂性,同时将PBAT相位尺寸从3.7微米减少到0.91微米.
结论:
- 开发的MG共聚合物提供了一种简单,低成本,高效的方法来使PLA/PBAT混合物兼容.
- 这项研究为设计可生物降解聚合物的有效环氧基兼容剂提供了新的基础.
- 改进的性能使得这些兼容混合物非常适合用于先进的包装应用.
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