通过创新的反应相容化,提高聚乳酸/聚乙烯基酸-共甲酸混合物的界面兼容性和性能
Guangxu Gao1, Yutong Zhang2, Xiaohan Bai3
1Liaoning Provincial Key Laboratory for Synthesis and Preparation of Special Functional Materials, Shenyang University of Chemical Technology, Shenyang 110142, Liaoning, China.
International journal of biological macromolecules
|June 28, 2025
概括
这项研究引入了聚乙烯甘) 滴甘乙烯 (PPGDGE) 作为聚乳酸) /聚乙烯基酸盐-联合甲酸盐 (PLA/PBAT) 混合物的新型反应兼容剂. 添加PPGDGE显著提高了机械,光学和热性能,同时确保生物相容性和可调节的降解率.
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:
- 全球对可持续,高性能生物基聚合物混合物的需求不断增长.
- 需要提高聚酸乳酸 (PLA) 和聚乙烯基酸盐-联合甲酸盐 (PBAT) 混合物的兼容性和性能.
- 环境问题推动了对可生物降解和生物相容材料的研究.
研究的目的:
- 研究聚乙烯糖醇) 滴甘乙烯 (PPGDGE) 作为新型反应兼容剂,用于PLA/PBAT混合物.
- 系统地评估PPGDGE对PLA/PBAT混合物的加工,光学,热,机械和降解性能的影响.
- 评估开发的PLA/PBAT/PPGDGE (PBP) 三元混合系统的生物相容性.
主要方法:
- 融混合技术用于制备PLA/PBAT/PPGDGE (PBP) 三元混合系统.
- 混合物性能的系统评估,包括机械 (冲击强度,破裂时的延长),光学 (光传导率),热 (维卡特软化温度,玻璃过渡温度) 和降解行为.
- 使用L929细胞进行体外生物相容性测试 (活体/死体染色,CCK-8试验).
主要成果:
- PPGDGE作为反应性兼容剂,在现场形成PLA-graft-PBAT共聚合物,改善混合物兼容性.
- 最佳的兼容性和增强的性能 (90%的光透率, 88.8°C维卡特软化温度,破裂时480%的延长,14370 J/m2的冲击强度) 在5phr PPGDGE.
- 所有PBP混合物都显示出与L929细胞的良好生物相容性,并且由于PPGDGE的水友性,降解率显著增加.
结论:
- PPGDGE有效地提高了PLA/PBAT混合物的机械,热和光学性能.
- 添加PPGDGE确保了PBP混合物的优良细胞兼容性和可调节的降解率.
- 这些发现为在需要预先确定的使用寿命和生物安全性的可生物降解材料中应用这些PBP混合物提供了基础.
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