可生物降解的热塑性麻豆粉/聚乙烯糖酸) 与酸混合:特性和性能评估
Raul Franklin Andrade Santos1, Gustavo Adolfo Duarte Urueña1, Patrícia Santiago de Oliveira Patricio2
1Federal University of São Carlos, Graduate Program in Materials Science and Engineering, Rodovia Washington Luiz, km 235, 13565-905 São Carlos, SP, Brazil.
International journal of biological macromolecules
|August 13, 2025
概括
将酸添加到热塑性麻豆粉和聚乙酸混合物中,可以提高加工性和分散性. 这种生物降解材料对环保应用具有前景.
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
- 生物材料是一种生物材料.
背景情况:
- 热塑性粉 (TPS) 是一种具有环境效益的可生物降解聚合物.
- 加入有机酸改变了TPS的特性,提高了它的适用性.
- 将TPS与可生物降解的聚合物,如聚乙烯酸 (PBS) 混合是一种常见的策略.
研究的目的:
- 为了研究酸对热塑性麻豆粉/聚乙酸混合物的特性的影响.
- 评估这些混合物的可加工性,形态和光学特性.
- 为了确定酸的最佳度以提高混合性能.
主要方法:
- 制备了热塑性麻豆粉 (70重%) 和PBS (30重%) 的二元混合物,其中酸含量不同 (05重%).
- 处理过程使用Haake内部混合器在化状态下进行,随后进行热压缩成型.
- 分析包括态行为 (扭矩),表面特征 (接触角),X射线衍射 (XRD),扫描电子显微镜 (SEM) 和光学属性评估.
主要成果:
- 加入PBS降低了粉加工所需的扭矩.
- 酸进一步降低了加工扭矩,而更高的度则促进了这一过程.
- 接触角度随着酸含量增加而减少.
- XRD和SEM表明粉的凝化不完全,但在5%重量酸下改善了分散性和均性.
- 可见的颜色变化表明酸和TPS之间的相互作用.
结论:
- 酸作为热塑性粉/PBS混合物的加工辅助剂,降低扭矩并改善均性.
- 添加酸增强了粉和PBS阶段之间的分散.
- 这些发现表明,在可持续材料应用中,酸修饰的TPS/PBS混合物有潜力.
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