Membranes prepared by electrospinning nonwoven mats have been receiving an increasing amount of interest recently with potential applications as water filtration membranes, drug delivery mats, and environmental sensors. Innovations in membrane processing and characteristics enabled by electrospinning could impact the industry. In this investigation, we demonstrate the effects of changing the chain length of an α,ω-bis(2-carboxymethyl)poly(ethylene glycol) (PEG diacid) crosslinker on the physical properties of electrospun poly(vinyl alcohol) (PVA) nanofibrous mats. Analysis of as-spun PVA mats showed average fiber diameters of 0.13 ± 0.02 μm with average pore areas of 1.67 ± 0.51 μm². Average fiber diameters for mats crosslinked with a shorter PEG diacid (M_n = 250) were 0.20 ± 0.04 μm with average pore areas of 0.64 ± 0.18 μm². Similarly, mats crosslinked with a longer PEG diacid (M_n = 600) had average fiber diameters of 0.22 ± 0.04 μm with average pore areas of 0.44 ± 0.23 μm². Further studies on the durability of the mats showed dramatic improvements in the Young's modulus, the stress at break, and the strain at break that increased with the length of the crosslinker. Developing further knowledge regarding the enhancement and control of electrospun membranes can help improve the field of electrospun membranes with great potential for water purification and can reveal new opportunities for existing technologies moving forward.

通过电纺非织造垫制备的膜近来受到越来越多的关注，其潜在应用包括水过滤膜，药物递送垫和环境传感器。静电纺丝技术在薄膜加工和特性方面的创新可能会影响整个行业。在这项研究中，我们证明了改变α，ω-双（2-羧甲基）聚乙二醇（PEG二酸）交联剂的链长对静电纺丝聚乙烯醇（PVA）纳米纤维的物理性能的影响垫子。初纺PVA垫的分析表明存在0.13±0.02微米的平均纤维直径为1.67±0.51微米平均孔区²。平均纤维直径为垫具有较短PEG二酸（M交联_Ñ  = 250）分别为0.20±0.04微米0.64±0.18微米平均孔区²。类似地，垫交联具有较长的PEG二酸（M _Ñ  = 600）具有0.22±0.04微米0.44±0.23微米平均孔区域的平均纤维直径²。垫子耐久性的进一步研究表明，杨氏模量，断裂应力和断裂应变均随着交联剂长度的增加而显着提高。发展有关增强和控制电纺膜的进一步知识，可以帮助改善具有极高净水潜力的电纺膜领域，并可以揭示现有技术的新机遇。