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在PLA/PBAT混合物中的Joncryl链延长剂的活性:加工温度和PBAT老化对混合物性能的影响

Aylin Altınbay¹, Ceren Özsaltık², Davoud Jahani³

¹Sustainable & Green Plastics Laboratory, Metallurgical & Materials Engineering Department, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Istanbul 34469, Turkey; Metallurgical & Materials Engineering Department, Faculty of Chemical and Metallurgical Engineering, Yildiz Technical University, Esenler, Istanbul 34220, Turkey.

International journal of biological macromolecules

|February 6, 2025

概括

添加Joncryl链延长剂可以改善多化/多化混合物,特别是在更高的温度下. 新鲜的聚乙烯基合甲基 (PBAT) 增强了Joncryl的反应性和混合性能,比老化的PBAT更强.

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
生物塑料是生物塑料.

背景情况:

聚酸 (PLA) 和聚乙烯-基酸-共甲酸 (PBAT) 混合物是有前途的生物降解材料.
提高PLA/PBAT混合物的兼容性和性能对于其更广泛的应用至关重要.
链延长器可以通过促进聚合物链之间的反应来增强聚合物混合物特性.

研究的目的:

为了研究基于环氧的Joncryl链延长剂对PLA/PBAT混合物特性的影响.
评估加工温度和PBAT老化对Joncryl反应性和混合物性能的影响.
为了了解PLA/PBAT混合物与Joncryl添加物质变化背后的机制.

主要方法:

风湿学分析以评估Joncryl与PLA,PBAT及其混合物在不同温度下的反应性.
准备混合物的形态,拉力,冲击和动态机械分析.
用新鲜PBAT与老化PBAT制成的混合物的比较.

主要成果:

与PLA相比,Joncryl与PLA的反应性随着温度的增加而显著增加,但较高的温度也加速了PLA的降解.
混合物的溶解质性质在较高温度下随着Joncryl的添加而得到改善,这表明兼容性得到了提高.
冲击强度随着加工温度的增加而增加,这是由于改进的界面兼容性和PBAT阶段精细化.
用老化PBAT制备的混合物由于抑制融特性和非均形态,显示出明显较差的机械性能.

结论:

克作为有效的链延长剂和PLA/PBAT混合物的兼容剂,特别是在高加工温度下.
虽然较高的温度提高了Joncryl的有效性,但它们也增加了PLA的降解,需要仔细控制加工.
使用新鲜的PBAT对于实现最佳混合性能至关重要,因为老化的PBAT显著阻碍了Joncryl的积极作用.

关键词:

衰老的衰老衰老的衰老一个混合的混合物.约翰克里尔 (Joncryl) 是一种在PBAT和PBAT之间这就是为什么PLA PLA PLA.类风病学类风病学类风病学

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