电纺的制备PVA@Ls@BAC@PDMS高效去除PM2.5、耐热性好的复合纳米纤维空气过滤膜

IF 2.702 Q1 Materials Science Journal of Polymer Science Part A: Polymer Chemistry Pub Date : 2023-07-15 DOI:10.1002/pol.20230250
Yi Wang, Yu Miao, Yuxin Cai, Enfu Wang, YiPeng Liang, Jinhuan Zhong, Wenbiao Zhang, Jingda Huang
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引用次数: 1

摘要

水溶性聚合物空气过滤材料因其环保性能和高效性而备受关注,但机械强度、效率和压降的平衡仍然是一个严峻的挑战。针对这一问题,将聚乙烯醇(PVA)、竹活性炭(BAC)和木质素磺酸钠(Ls)相结合,构建了一个具有两种过滤功能的静电纺丝系统。在PVA@Ls@BAC系统,电纺PVA基纳米纤维构建的3D网络可以有效拦截PM2.5,引入的Ls由于其良好的刚性提高了PVA纳米纤维的机械强度。此外,添加的带负电荷的BAC促进了PM2.5的静电吸附,同时也提高了系统的耐热性。此外,还引入了聚二甲基硅氧烷(PDMS)来提高体系的耐水性。由此产生的电纺PVA@Ls@BAC@PDMS复合纳米纤维空气过滤膜具有优异的空气过滤性能(98.67%)、拒水性(123.7°WCA)和可重复使用性能,同时具有良好的力学性能,拉伸断裂应变达到112%。由于其良好的性能和简单的制备工艺,电纺PVA@Ls@BAC@PDMS复合纳米纤维空气过滤膜具有广阔的应用空间。
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Preparation of electrospun PVA@Ls@BAC@PDMS composite nanofibrous air filtration membrane with high efficiency removal for PM2.5 and excellent heat resistance

Development of water-soluble polymer air filtration materials attracts considerable attentions due to their environmentally friendly performance and high efficiency, but the balance of mechanical strength, efficiency and pressure drop still is a severe challenge. Focusing on this issue, polyvinyl alcohol (PVA), bamboo activated carbon (BAC) and sodium lignosulfonate (Ls) were combined to construct an electrospinning system with two filtration functions. In the PVA@Ls@BAC system, the 3D network constructed by the electrospun PVA based nanofibrous could effectively intercept PM2.5, and the introduced Ls enhanced the mechanical strength of PVA nanofibrous due to its good rigidity. In addition, the added negatively charged BAC facilitated the electrostatic adsorption of PM2.5 while also improved the heat resistance of the system. Moreover, polydimethylsiloxane (PDMS) was introduced to enhance the water resistance of the system. The resulting electrospun PVA@Ls@BAC@PDMS composite nanofibrous air filtration membrane exhibited excellent air filtration performance (98.67%), water repellency (123.7° of WCA), and reusable performance, as well as having good mechanical property and the tensile fracture strain reaching 112%. Because of its good performance and simple preparation process, the electrospun PVA@Ls@BAC@PDMS composite nanofibrous air filtration membrane has great application space.

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来源期刊
CiteScore
5.20
自引率
0.00%
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0
审稿时长
1.8 months
期刊介绍: Part A: Polymer Chemistry is devoted to studies in fundamental organic polymer chemistry and physical organic chemistry. This includes all related topics (such as organic, bioorganic, bioinorganic and biological chemistry of monomers, polymers, oligomers and model compounds, inorganic and organometallic chemistry for catalysts, mechanistic studies, supramolecular chemistry aspects relevant to polymer...
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Issue Information - Cover Description Cover Image, Volume 61, Issue 20 Issue Information - Cover Description Cover Image, Volume 61, Issue 19 Emerging researchers interview—Ji Liu, Southern University of Science and Technology
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