生物基电纺丝聚酰胺膜--用于微塑料过滤的可持续多用途滤膜†。

Maximilian Rist and Andreas Greiner
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引用次数: 0

摘要

电纺丝是一种用途广泛的滤膜制造方法,有助于形成生产可持续废水处理滤膜的先进理念。使用生物基聚合物可以显著提高此类滤膜的可持续性。例如,生物基 PA 6.9 在制造具有高机械性能和高耐溶剂性的生物来源电纺滤膜 (EFM) 方面显示出巨大的潜力。这种聚酰胺由植物油基壬二酸合成,并通过氯仿/甲酸电纺产生自立电纺无纺布。这些高孔隙率膜的过滤效率高达 99.8%,可过滤水中的聚苯乙烯微颗粒(PS-MPs)。此外,电纺无纺布在去除空气中 0.3 μm 微粒时的过滤效率与 FFP3 面膜相当。这种膜的表面具有疏水性(水接触角为 120°),因此适用于水油分离。从 50 vol% 的混合物中分离水和氯仿的效率可达 99.9%,同时保持高达 5345 L m-2 h-1 的高渗透通量。此外,这种膜还可以重复使用至少十次,而不会显著降低效率或通量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Bio-based electrospun polyamide membrane – sustainable multipurpose filter membranes for microplastic filtration†

Electrospinning is a highly versatile method for manufacturing filter membranes, contributing to advanced concepts for the production of sustainable membranes for waste water treatment. The use of bio-based polymers could expand the sustainability of such filter membranes significantly. Bio-based PA 6.9, for example, shows great potential for the creation of bio-sourced electrospun filter membranes (EFMs) with high mechanical properties and high resistance to solvents. The polyamide is synthesized from plant oil-based azelaic acid and electrospun from chloroform/formic acid to produce self-standing electrospun nonwovens. These highly porous membranes show high efficiencies of up to 99.8% for the filtration of polystyrene microparticles (PS-MPs) from water. Additionally, the electrospun nonwovens exhibit comparable filtration efficiencies to FFP3 masks for the removal of 0.3 μm particles from air. The membranes show hydrophobic surface behavior (water contact angle of >120°) making them suitable for water oil separation. Efficiencies of up to 99.9% can be achieved for the separation of water and chloroform from 50 vol% mixtures, while maintaining a high permeate flux of up to 5345 L m−2 h−1. Additionally, the membranes can be reused for at least ten times without any significant reduction in efficiency or flux.

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Debondable phenoxy-based structural adhesives with β-amino amide containing reversible crosslinkers. Back cover Impact of aromatic to quinoidal transformation on the degradation kinetics of imine-based semiconducting polymers† Adhesive-less bonding of incompatible thermosetting materials† Polymer-based solid electrolyte interphase for stable lithium metal anodes†
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