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二次界面聚合使热稳定的聚胺纳米过膜能够用于高温分离

Wan-Long Li¹, Jia-Hui Xin¹, Ping Fu¹

¹MOE Engineering Research Center of Membrane and Water Treatment Technology, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Zhejiang Key Laboratory of Advanced Organic Materials and Technologies, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310058, China.

Journal of colloid and interface science

|July 23, 2025

概括

这项研究引入了一种新的二次界面聚合方法,以创建热稳定的薄膜复合材料纳米过 (NF) 膜. 这些增强的NF膜在高温下表现出更好的性能,克服了传统设计的局限性.

科学领域:

材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.
分离科学分离科学

背景情况:

薄膜复合材料 (TFC) 纳米过 (NF) 膜对于离子和分子的分离至关重要.
传统的NF膜在高温下缺乏结构稳定性,损害了分离效率.

研究的目的:

开发一种二次界面聚合策略,用于制造具有增强热稳定的NF膜.
提高NF膜在高温条件下的结构完整性和性能.

主要方法:

使用二次界面聚合技术与常规单体的NF膜的制造.
聚胺层的厚度,电荷和紧度的表征.
分子动力学模拟以评估聚合物链的移动性.
在85°C时对MgSO4和Na2SO4进行膜排斥的性能评估.

主要成果:

二次聚合导致更厚,负电荷的聚胺层.
该过程改善了聚胺层的紧性和结构稳定性.
分子动力学模拟证实了聚合物链的流动性降低.
经过修改的NF膜在85°C时显示出MgSO4和Na2SO4的高排斥率.
膜在温度循环和长时间高温操作期间表现出极好的稳定性.

结论:

二次界面聚合策略有效地提高了TFC NF膜的热稳定性.
这种方法提供了一个有前途的方法,用于制造强大的NF膜,用于高温分离应用.
通过二次聚合,同时调整化学和物理结构是提高性能的关键.

关键词:

界面聚合的介面聚合.纳米过的纳米过方法在治疗后进行后期处理.二次聚合二次聚合.热稳定的膜热稳定的膜

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