基于交联聚醚酰亚胺的电纺丝膜:纤维形态对热油吸附的影响

IF 6.6 Q1 ENGINEERING, ENVIRONMENTAL
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引用次数: 0

摘要

处理热油溢出,特别是炼油厂、石化工业和汽车溢出的热油具有挑战性,目前解决这一问题的方法还很有限。本研究利用聚醚酰亚胺(PEI)的高温稳定性开发了电纺丝纤维膜,将其作为热油吸附的理想材料。通过合理选择不同沸点的溶剂,使成膜纤维的形态从圆形到哑铃形不等,以研究纤维形态对吸油能力的影响。使用乙二胺(EDA)对 PEI 膜进行交联,以增强膜的结构完整性和弹性。由哑铃状纤维组成的 PEI 膜在 150°C 的温度下,一小时内对发动机油的吸油能力为 25.4 ±1.5 g/g,优于商用聚丙烯(PP)无纺布吸油剂,后者在相同的高温条件下会失效和塌陷。由于哑铃状纤维膜具有较低的迂回度、排列整齐的纤维间通道和较高的毛细管压力,因此增强了其对油的吸附能力。通过引入特定的表面特征和功能化,可进一步探索基于 PEI 的电纺丝膜在控制溢油方面的用途和吸附能力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Crosslinked polyetherimide based electrospun membrane: Effect of fibre morphology on hot oil sorption

Handling hot oil spillage, particularly from oil refineries, petrochemical industry and automobiles is challenging and there have been limited solutions to address the issue. Polyetherimide (PEI) electrospun fibrous membranes were developed in this study by leveraging PEI's high-temperature stability to serve as promising materials for hot oil sorption. The morphology of the membrane forming fibers varied from circular to dumbbell shaped, by judicious choice of solvents of varying boiling points, to study the effect of fiber morphology on oil sorption capacity. Crosslinking of PEI membranes was carried out using ethylenediamine (EDA) to impart structural integrity and resiliency to the membranes. The PEI membrane composed of dumbbell-shaped fibers demonstrated an oil-sorption capacity of 25.4 ±1.5 g/g for engine oil at 150°C within one hour, outperforming a commercial polypropylene (PP) nonwoven absorbent, which failed and collapsed under the same high-temperature conditions. Enhanced oil sorption in the dumbbell-shaped fibrous membrane was achieved due to its lower tortuosity, aligned inter-fiber channels, and higher capillary pressure. Usefulness and sorption capacity of PEI based electrospun membranes may further be explored for controlling the oil spillage through introduction of specific surface features and functionalization.

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来源期刊
Journal of hazardous materials letters
Journal of hazardous materials letters Pollution, Health, Toxicology and Mutagenesis, Environmental Chemistry, Waste Management and Disposal, Environmental Engineering
CiteScore
10.30
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