乳薄膜的动态表面及其防应用
Jie Zhang1, Chen Wang1, Hanying Zhao1
1Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry, Nankai University, PR China.
Journal of colloid and interface science
|October 31, 2023
概括
研究人员使用一种新的环保方法开发了具有动态表面的"智能"乳膜. 这些膜可以在疏水性和疏水性状态之间切换,通过抵抗蛋白质吸附和细菌粘附,为抗应用提供潜力.
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
- 表面化学 表面化学
背景情况:
- 制造具有动态表面的"智能"乳薄膜一直是具有挑战性的,因为使用传统方法合成功能性乳颗粒存在困难.
- 在常规乳液聚合中使用的小分子表面活性剂阻碍了创建先进的功能材料.
研究的目的:
- 报告一种简单,环保的方法,用于制造具有动态表面的"智能"乳薄膜.
- 为了合成具有明显核心外结构的功能性乳颗粒,以获得可调的表面特性.
主要方法:
- 使用可逆添加碎片化链转移 (RAFT) 介导的无表面活性剂乳液聚合来合成核心外乳颗粒.
- 颗粒的特点是聚甲基酸 (PnBMA) 芯和zwitterionic聚-3-[二甲基-[2--2-甲基-2-氧化) 乙烯]亚]-1-硫酸 (PDMAPS) .
- 使用传输电子显微镜 (TEM),扫描电子显微镜 (SEM) 和动态光散射 (DLS) 来表征乳膜的特征.
主要成果:
- 合成的乳颗粒呈现出核心外结构,通过显微镜和DLS分析得到证实.
- 乳膜表现出动态的表面特性,在水处理时从疏水性 (PnBMA 主导) 转变为疏水性 (PDMAPS 主导).
- 观察到水接触角度的显著变化,与表面成分变化相关.
结论:
- 成功开发了一种创新方法,用于创建具有可切换表面特性的"智能"乳膜.
- 动态表面形成的拟议机制为控制材料行为提供了洞察力.
- 开发的乳膜显示出出色的抗 capabilities,有效地抑制蛋白质吸附和细菌粘附.
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