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首页> 外文期刊>New Journal of Chemistry >Tailored design of polyurethane based fouling-tolerant nanofibrous membrane for water treatment
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Tailored design of polyurethane based fouling-tolerant nanofibrous membrane for water treatment

机译：基于聚氨酯的污垢纳米纤维膜定制设计水处理

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摘要

Polyurethane (PU) nanofibers have gained attention due to their good mechanical properties and water resistance. However, the applicability in water filtration is limited due to their hydrophobic nature. A new class of high performance fouling tolerant hydrophilic PU based nanofibrous membranes have been fabricated by an electrospinning technique. The electrospun parameters of the PU systems were thoroughly optimized for ideal fiber diameter and fiber morphology suitable for water filtration. The effects of polyvinylpyrrolidone (PVP) concentration in membrane morphology, as well as physical and chemical properties of the developed membranes, were studied. PU/PVP exhibited improved hydrophilicity, which was confirmed from the contact angle and protein adsorption results. Under low pressure, all PVP modified membranes showed a water flux higher than that of 1000 lm(-2) h(-1). Furthermore, the PU/PVP membranes exhibited good rejection performance, higher than 80% for olive oil and 99% for gingelly oil. The results showed that the incorporation of PVP into the PU membrane caused a significant improvement in the antifouling property and membrane performance. Antifouling properties of the developed membrane were investigated using the Hermia model and the fouling mechanism is fitted with a cake filtration model. All these results showed that electrospun PU/PVP nanofibrous membrane could be a promising candidate for cost effective water treatment.
机译：由于其良好的机械性能和耐水性，聚氨酯（PU）纳米纤维获得了关注。然而，由于其疏水性质，水过滤的适用性受到限制。通过静电纺丝技术制造了一种新的高性能污染耐水性PU基纳米纤维膜。 PU系统的电纺参数对于适合水过滤的理想纤维直径和纤维形态进行彻底优化。研究了膜形态中聚乙烯吡咯烷酮（PVP）浓度的影响，以及发育膜的物理和化学性质。 PU / PVP表现出改善的亲水性，从接触角和蛋白质吸附结果中确认。在低压下，所有PVP改性膜显示出高于1000Lm（-2）H（-1）的水通量。此外，PU / PVP膜表现出良好的抑制性能，橄榄油的80％高，Gingelly油的99％。结果表明，PVP掺入PU膜引起了防污性能和膜性能的显着改善。使用Hermia模型研究了开发膜的防污性能，并且污垢机构配有滤饼过滤模型。所有这些结果表明，电纺厂PU / PVP纳米纤维可能是具有成本效益水处理的有希望的候选者。

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  • 来源
    《New Journal of Chemistry》 |2018年第3期|共15页
  • 作者

    Sundaran Suja P.; Reshmi C. R.; Sujith A.;

  • 作者单位

    Natl Inst Technol Calicut Dept Chem Mat Res Lab Calicut 673601 Kerala India;

    Natl Inst Technol Calicut Dept Chem Mat Res Lab Calicut 673601 Kerala India;

    Natl Inst Technol Calicut Dept Chem Mat Res Lab Calicut 673601 Kerala India;

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  • 正文语种 eng
  • 中图分类 化学;
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