Superhydrophobic perfluoropolymer/polystyrene blend films induced by nonsolvent
Superhydrophobic perfluoropolymer/polystyrene blend films induced by nonsolvent
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DOI：
10.1016/j.apsusc.2016.04.160
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发表时间：
2016-10-15
影响因子：
6.7
通讯作者：
Erbil, H. Yildirim
中科院分区：
文献类型：
--
作者：
Gengec, Nevin Atalay;Cengiz, Ugur;Erbil, H. Yildirim
以AIBN为引发剂，在CO2聚合体系中合成了全氟烷基丙烯酸乙酯(Zonyl-Tan)和甲基丙烯酸甲酯(MMA)的统计共聚物。将合成的p(TAN-co-MMA)共聚物和聚苯乙烯(PS)溶解在溶剂中，通过相分离的方法在玻片上制备了平面和超疏水表面。在成膜过程中加入乙醇作为非溶剂引入超疏水作用。平坦的p(TAN-co-MMA)共聚物表面的水接触角为118度，随着表面粗糙度的增加，水接触角增加到170度。在相分离过程中，乙醇非溶剂在共混液中的比例对表面粗糙度有重要影响。使用非溶剂时，表面形成1-10微米大小的凹坑和突起。表面粗糙度随共混液中乙醇比和PS含量的增加而增大。(C)2016爱思唯尔B.V.保留所有权利。
Statistical copolymers of perfluoroalkyl ethyl acrylate (Zonyl-TAN) and methyl methacrylate (MMA) were synthesized in a CO2 polymerization system where a CO2-expanded monomer mixture was formed at 13 MPa, and 80 degrees C by using AIBN as initiator. Flat and superhydrophobic surfaces were subsequently prepared on glass slides by applying a phase separation process where the synthesized p(TAN-co-MMA) copolymer and polystyrene (PS) were dissolved in THE solvent. Ethanol was added as the non-solvent to introduce superhydrophobicity during film formation. Water contact angle on the flat p(TAN-co-MMA) copolymer was 118 degrees and increased up to 170 degrees with the formation of surface roughness. The ratio of the ethanol non-solvent in the blend solution has an important effect on the magnitude of surface roughness during the phase separation process. Both pits and protrusions of 1-10 mu m in size were formed on the surface when non-solvent was used. Surface roughness increased with the increase in the ethanol ratio and the PS content of the blend solution. (C) 2016 Elsevier B.V. All rights reserved.