Hydrophobic Antifouling Electrospun Mats from Zwitterionic Amphiphilic Copolymers
Hydrophobic Antifouling Electrospun Mats from Zwitterionic Amphiphilic Copolymers
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DOI：
10.1021/acsami.8b03268
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发表时间：
2018-05-30
影响因子：
9.5
通讯作者：
Asatekin, Ayse
中科院分区：
文献类型：
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作者：
Ozcan, Sefika;Kaner, Papatya;Asatekin, Ayse
在许多应用中，例如通过膜蒸馏的水净化，需要既疏水又抗污染的多孔材料。在这项工作中，我们采取了一种新的方法来制造这样的膜。使用两性离子两亲性共聚物聚（甲基丙烯酸三氟乙酯-无规磺基甜菜碱甲基丙烯酸酯），我们静电纺丝非织造，多孔膜，结合联合收割机高疏水性与抗蛋白质吸附。通过改变电纺参数和溶液组成，可以制备具有宽范围的纤维形态的膜，所述纤维形态包括珠状、无珠状、微珠状和带状纤维，直径范围在150 nm和1.5 μ m之间。在纺丝溶液中加入LiCl不仅有助于控制纤维形态，而且还增加了膜表面两性离子基团的分离。所得到的电纺膜是高度多孔和非常疏水的，但抵抗蛋白质的吸附，并且即使在暴露于蛋白质溶液之后也保持高接触角（类似于140度）。这使得这些材料有希望的候选人污染的废水流的膜蒸馏和作为自清洁材料。
A porous material that is both hydrophobic and fouling-resistant is needed in many applications, such as water purification by membrane distillation. In this work, we take a novel approach to fabricating such membranes. Using the zwitterionic amphiphilic copolymer poly(trifluoroethyl methacrylate-random-sulfobetaine methacrylate), we electrospin nonwoven, porous membranes that combine high hydrophobicity with resistance to protein adsorption. By changing the electrospinning parameters and the solution composition, membranes can be prepared with a wide range of fiber morphologies including beaded, bead-free, wrinkly, and ribbonlike fibers, with diameters ranging between similar to 150 nm and 1.5 mu m. The addition of LiCl to the spinning solution not only helps control the fiber morphology but also increases the segregation of zwitterionic groups on the membrane surface. The resultant electrospun membranes are highly porous and very hydrophobic, yet resist the adsorption of proteins and retain a high contact angle (similar to 140 degrees) even after exposure to a protein solution. This makes these materials promising candidates for the membrane distillation of contaminated wastewater streams and as self-cleaning materials.