Fabrication of hollow and porous polystyrene fibrous membranes by electrospinning combined with freeze-drying for oil removal from water
Fabrication of hollow and porous polystyrene fibrous membranes by electrospinning combined with freeze-drying for oil removal from water
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静电纺丝结合冷冻干燥制备中空多孔聚苯乙烯纤维膜用于水中除油
DOI：
10.1002/app.47262
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发表时间：
2019
影响因子：
3
通讯作者：
Zhao Kang
中科院分区：
文献类型：
--
作者：
Tang Yufei;Liu Zhaowei;Zhao Kang
提出了一种制备中空和表面多孔聚苯乙烯（PS）纤维膜的新方法。以聚苯乙烯和正硅酸乙酯（TEOS）为成孔剂制备纺丝液，采用静电纺丝和冷冻干燥法制备表面孔径为100-400 nm的中空聚苯乙烯纤维。苯乙烯和正硅酸乙酯的分布和挥发以及溶剂在高相对湿度下的干燥行为是形成多孔结构的重要因素。所得PS纤维膜的比表面积是常规静电纺PS纤维膜的2倍，显示出超疏水性能。此外，由于PS纤维的中空结构和多孔表面，形成了较大的吸附储存空间。多孔PS纤维膜的最大油吸附容量为105.4g g-1，重复5次后比常规PS纤维膜的油吸附容量大，因此使其成为有希望的用于溢油清理的工具。© 2018 Wiley Periodicals，Inc. J.应用聚合物Sci.2019，136，47262.
A novel method was proposed to fabricate hollow and surface porous polystyrene (PS) fibrous membranes for the removal of oil from water. Spinning solutions were prepared by using camphene and tetraethoxysilane (TEOS) as pore‐forming agents, and hollow PS fibers with 100–400 nm pores on the surface were fabricated by electrospinning and freeze‐drying. The distribution and volatilization of camphene and TEOS, as well as the drying behavior of solvents in high relative humidity, were important factors in forming the porous structure of PS fibers. The specific surface area of obtained PS fibrous membranes was twice that of conventional electrospun PS fibrous membranes and displayed superhydrophobic properties. Moreover, the large adsorption storage space was formed due to the hollow structure and porous surface of PS fibers. The maximum oil adsorption capacity of the porous PS fibrous membrane was 105.4 g g−1, and was larger than that of the conventional PS fibrous membrane after repeated five times, thus making it a promising tool for oil spill cleanups. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2019,136, 47262.