开发和研究基于纤维素酸盐的新型超膜
Anna Kuzminova1, Mariia Dmitrenko1, Roman Dubovenko1
1St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia.
Polymers
|May 11, 2024
概括
研究人员用聚合物和碳纳米粒子修改了纤维素酸 (CA) 膜,以提高超过性能. 与聚乙烯甘醇 (PEG) 和碳60 (C$_{60}$) 混合的膜显示了增强的水和牛血清白蛋白 (BSA) 流量.
科学领域:
- 膜技术的技术是膜技术.
- 聚合物科学 聚合物科学
- 材料科学是一种材料科学.
背景情况:
- 基于生物聚合物的膜在膜技术中越来越受欢迎.
- 纤维素酸 (CA) 是一种成熟的聚合物,用于开发多孔膜.
- 优化CA膜特性对于高效的超过应用至关重要.
研究的目的:
- 研究各种参数对超过CA膜的形成和运输性能的影响.
- 探索混合聚合物 (PEG,PS,PL) 和将碳纳米粒子 (CNPs) 纳入CA膜的效果.
- 为了确定在超过中增强膜性能的最佳修改.
主要方法:
- 膜形成涉及凝血浴温度的变化和治疗后的收缩.
- 用聚乙烯糖醇 (PEG),聚硫 (PS),Pluronic F127 (PL) 和碳纳米粒子 (SWCNTs,MWCNTs,GO,C$_{60}$) 修改了造溶液.
- 使用显微镜,光谱,接触角测量和使用BSA,德克斯和PVP K-90进行超试验来表征结构,物理化学和运输性能.
主要成果:
- 所有修改后的膜都实现了90%以上的排斥,化合物的排斥率约为270,000 g/mol.
- PEG,PS,PL和0.5%重量的C$_{60}$的组合增强了流量和BSA排斥系数.
- CA-PEG+C$_{60}$膜表现出最高的水 (394 L/m$^2$h) 和BSA (212 L/m$^2$h) 流量,而CA-PS+C$_{60}$表现出最大的BSA排斥 (59%).
结论:
- 用聚合物和碳纳米颗粒进行修改,显著改善了CA超膜的运输特性.
- 增强的性能归因于增加的宏观体,更开放的多孔结构,更薄的选择性层,以及降低表面粗度.
- 像CA-PEG+C$_{60}$和CA-PS+C$_{60}$这样的特定混合物为超过应用提供最佳的流量和排斥.
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