聚乳酸对二元水溶液系统的屏障特性
Yuchao Du1, Jilong Cao1, Wanling Li1
1State Key Laboratory of Polymer Materials Engineering of China, Polymer Research Institute of Sichuan University, Chengdu 610065, China.
International journal of biological macromolecules
|February 15, 2025
概括
聚乳酸 (PLA) 对水溶液具有不同的屏障特性. SELS和NaCl溶液比AcOH和EtOH具有更好的抗性,这表明溶液结构对PLA的影响更大.
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
- 物理化学 物理化学
背景情况:
- 聚乳酸 (PLA) 是一种可生物降解的聚合物,具有需要屏障特性的潜在应用.
- 了解PLA与各种水溶液的相互作用对于优化其在包装和生物医学领域的使用至关重要.
研究的目的:
- 为了研究聚乳酸 (PLA) 对四种二元水溶液的屏障特性:化 (NaCl),氨酸聚氧乙烯乙太硫酸盐 (SELS),酸 (AcOH) 和乙醇 (EtOH).
- 为了将溶液结构与PLA的粘附,扩散和透特性相关联.
主要方法:
- 测量接触角和表面张力,以确定粘附工作.
- 时间分辨率红外光谱 (TRIS) 用于测量水的扩散系数 (DATR).
- 透测试用于检测溶液透率 (P细胞).
主要成果:
- 单一的水表现出对PLA的粘附工作最高 (89.2 J/m2).
- 与纯水相比,NaCl和SELS溶液的水扩散系数 (DATR) 较低,但AcOH和EtOH溶液的质量为25%,则较高.
- 通过PLA的溶液透 (P细胞) 增加,溶液度高达25%质量%.
结论:
- 聚氨酸对测试溶液的阻隔性能按照以下顺序进行:SELS > NaCl > AcOH > EtOH.
- PLA与水溶液的相互作用受到溶液的化学结构的显著影响.
- 这些发现为针对特定屏障应用量身定制基于PLA的材料提供了洞察力.
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