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热塑性粉/聚乙醇混合物通过酸-甘油聚合物的修饰

Jennifer M Castro¹, Mercedes G Montalbán², Noelia Martínez-Pérez¹

¹Chemical Engineering Department, University of Alicante, Apartado 99, 03080 Alicante, Spain; Institute of Chemical Process Engineering, University of Alicante, Apartado 99, 03080 Alicante, Spain.

International journal of biological macromolecules

|June 19, 2023

概括

这项研究引入了糖酸寡合体,以改善热塑性粉/聚乙醇 (TPS/PVA) 薄膜. 这些新型塑化剂显著降低了迁移,并增强了耐用应用的机械性能.

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
生物材料是一种生物材料.

背景情况:

热塑性粉/聚乙醇 (TPS/PVA) 薄膜遭受粉逆向降解,导致可塑化剂迁移,特别是在低分子量可塑化剂,如甘油.
这限制了它们在长期应用中的使用.

研究的目的:

开发用于TPS/PVA混合物的替代性增塑剂,以减少增塑剂迁移并提高机械性能.
通过化混合来研究用甘酸寡合物作为高分子量可塑剂的使用.

主要方法:

土基TPS/PVA融混合物与制备有不同酸含量 (0-40mol%) 的甘油酸寡合物混合.
塑化剂迁移的特征,机械性能 (斯模量,抗拉强度,破裂时的延长) 和凝含量.

主要成果:

在TPS/PVA混合物中的可塑化剂迁移降低了高达70%,而在寡合物中酸含量增加.
与甘油相比,高分子量和甘油酸寡合物的3D结构 (764-2060 Da) 减少了迁移.
薄膜显示Young的模量和拉伸强度增加了150%,由于中等的交叉连接,在断裂时保持延长和高凝含量.

结论:

甘油酸寡合物是TPS/PVA的有效塑化剂,显著减少迁移并增强机械性能.
使用这些寡合体的融混合技术为生产耐用的TPS/PVA薄膜提供了一个可扩展的方法.
这种方法为基于粉的材料的长期应用提供了可行的替代方案.

关键词:

酸是一种酸.塑化剂是一种可塑化剂.热塑性粉/聚乙烯醇的使用情况

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