Sticky superhydrophobic filter paper developed by dip-coating of fluorinated waterborne epoxy emulsion
Sticky superhydrophobic filter paper developed by dip-coating of fluorinated waterborne epoxy emulsion
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DOI：
10.1016/j.apsusc.2012.05.083
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发表时间：
2012-09
影响因子：
6.7
通讯作者：
Xiangxuan Huang;Xiufang Wen;Jiang Cheng;Zhuo-ru Yang
中科院分区：
文献类型：
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作者：
Xiangxuan Huang;Xiufang Wen;Jiang Cheng;Zhuo-ru Yang
以水性双酚A型环氧树脂乳液为基材，合成了一种超疏水、超亲油滤油纸涂料。以苯甲酸（BA）和马来酸酐（MA）为改性剂，得到环氧树脂的亲水性基团（羧基）和CC双键。以甲基丙烯酸十二氟庚酯（DFMA）为单体，采用自由基溶液聚合法制备了氟化水性环氧乳液。单体中共价键的低自由能氟化链充分降低了固化聚合物的表面能，从而在保持超亲油性的同时产生超疏水行为。制备的表面具有粘性，5μL液滴的静态水接触角为152°，即使样品倒扣也不会滑落。该合成乳液作为滤纸的浸渍剂，操作简单方便，可作为棉纺、e -玻璃、人造纤维等各种基材的浸渍剂。
A superhydrophobic and superoleophilic coating for oil filter paper was synthesized based on waterborne bisphenol-A novolac epoxy emulsion. The benzoic acid (BA) and maleic anhydride (MA) were used as modification agents to give the epoxy resin hydrophilic groups (carboxyl) and CC double bonds. And the fluorinated waterborne epoxy emulsion was prepared by free radical solution polymerization of dodecafluoroheptyl methacrylate (DFMA) monomer. The covalent bound low free energy fluorinated chains in the monomer reduce the surface energy of solidification polymers sufficiently to give rise to superhydrophobic behavior while conserving superoleophilicity. Surfaces prepared show a sticky property, which exhibits a static water contact angle of 152° for a 5μL droplet that does not slid off even when the sample is held upside down. This synthetic emulsion is simple and convenient as impregnating agent for filter paper, which can be considered as a suitable candidate for various substrates such as cotton textiles, E-glass and artificial fiber, and so on.