Scholarlink

<p>The present study investigated the effect of rhamnolipid (RHL) biosurfactant as an eco-friendly pore-forming agent in the formation of asymmetric polysulfone (PSf) membrane for the first time. The structural properties of the prepared PSf membranes were characterized through FTIR, SEM, AFM, and contact angle analysis. The effect of RHL on the binodal curve for Water/N-methyl-2-pyrrolidone (NMP)/PSf ternary system in presence/absence of RHL surfactant was studied. All interaction parameters were estimated by fitting the numerically calculated binodal curve based on the Flory–Huggins theory with the experimental binodal curves plotted using cloud point data obtained from the titration method. Experimental results revealed that addition of small amount (0.3&#xa0;wt%) of RHL in the PSf casting solution resulted a membrane with enhanced pure water permeability, surface hydrophilicity, surface smoothness, negative charge, and sublayer porosity and thickness. The prepared membranes were successfully used for the separation of&#xa0;BSA protein from aqueous solution in a stirred batch cell. Experimental results showed that the RHL blended PSf membrane possessed better antifouling resistance against protein adsorption/deposition with higher permeation flux and flux recovery ratio compared to pristine PSf membrane. Also, the performance of the RHL blended PSf membrane was compared with the sodium dodecyl sulfate (SDS) blended PSf membrane. Overall, this study highlighted the potential application of&#xa0;RHL biosurfactant as pore-forming agent in the synthesis of hydrophilic low fouling asymmetric membrane and its successful application in protein rejection with excellent recovery of water flux after three cycles of treating BSA solution.</p> Graphical abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Rhamnolipid-induced microstructural tuning of polysulfone membranes for enhanced permeability and antifouling performance

  • 期刊论文

  • 发表日期：

    2026年3月29日

查看全文
  • Kritika Pasricha,
  • Biswajit Sarkar

摘要

The present study investigated the effect of rhamnolipid (RHL) biosurfactant as an eco-friendly pore-forming agent in the formation of asymmetric polysulfone (PSf) membrane for the first time. The structural properties of the prepared PSf membranes were characterized through FTIR, SEM, AFM, and contact angle analysis. The effect of RHL on the binodal curve for Water/N-methyl-2-pyrrolidone (NMP)/PSf ternary system in presence/absence of RHL surfactant was studied. All interaction parameters were estimated by fitting the numerically calculated binodal curve based on the Flory–Huggins theory with the experimental binodal curves plotted using cloud point data obtained from the titration method. Experimental results revealed that addition of small amount (0.3 wt%) of RHL in the PSf casting solution resulted a membrane with enhanced pure water permeability, surface hydrophilicity, surface smoothness, negative charge, and sublayer porosity and thickness. The prepared membranes were successfully used for the separation of BSA protein from aqueous solution in a stirred batch cell. Experimental results showed that the RHL blended PSf membrane possessed better antifouling resistance against protein adsorption/deposition with higher permeation flux and flux recovery ratio compared to pristine PSf membrane. Also, the performance of the RHL blended PSf membrane was compared with the sodium dodecyl sulfate (SDS) blended PSf membrane. Overall, this study highlighted the potential application of RHL biosurfactant as pore-forming agent in the synthesis of hydrophilic low fouling asymmetric membrane and its successful application in protein rejection with excellent recovery of water flux after three cycles of treating BSA solution.

Graphical abstract