制备高度抗菌的聚乙硫/硫化聚乙硫混合复合膜,并研究其染料分离性能
Na Meng1, Jialing Mi1, Xuan Chen2
1Jiangsu Key Laboratory of Industrial Pollution Control and Resource Reuse, School of Environment Engineering, Xuzhou University of Technology, Xuzhou 221018, China.
Molecules (Basel, Switzerland)
|February 26, 2025
概括
这项研究用硫化聚硫 (SPES) 增强了聚硫 (PES) 膜,以改善水处理. 新的膜显示出更好的分离性能和减少细菌粘附,解决了关键的污染挑战.
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.
- 环境科学 环境科学
背景情况:
- 传统的聚硫 (PES) 膜具有有限的水友性,并且容易在水处理中产生微生物污染.
- 将硫酸组纳入PES,以创建硫化聚硫 (SPES) 复合膜,可以提高水友性和分离效率.
- 关于PES/SPES复合膜的抗菌性质的研究存在重大差距.
研究的目的:
- 使用非溶剂诱导相反技术制备PES/SPES混合膜.
- 研究固体含量对这些混合膜的微观结构,分离性能和抗菌性能的影响.
- 评估PES/SPES膜在水处理应用中减轻微生物污染的潜力.
主要方法:
- 用非溶剂诱导的相位逆转技术用于膜制造.
- 膜微观结构的特征,包括孔隙性和抗拉强度.
- 使用甲蓝排斥试验评估分离性能.
- 通过细菌粘附和微生物生长抑制试验评估抗菌性质.
主要成果:
- 造溶液中的固体含量增加导致了更高的粘度.
- 膜孔隙性从10.8%降至4.06%随着固体含量增加.
- 拉力强度从0.79 MPa显著提高到5.06 MPa.
- 甲蓝的排斥率从50%急剧增加到近100%.
- PES/SPES混合膜表现出对细菌粘附的增强抵抗力和抑制微生物生长.
- 较高的硫酸组含量与优越的抗菌性质相关.
结论:
- PES/SPES混合膜提供了增强的水友性,提高了分离效率和显著的抗菌特性.
- 固体含量是影响膜微观结构和性能的关键因素.
- 这些复合膜为减少水处理中的微生物污染提供了有希望的解决方案.
- 对优化硫酸组含量的进一步研究可以导致高效的防膜.
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