摘要
利用超疏水多孔材料的选择吸油性可以很好地处理突发性溢油事故和肆意排放的含油废水。本实验通过高内相乳液法制备了一种可压缩的聚苯乙烯多孔材料,通过SEM、IR对该材料结构进行了表征,并测试了其油⁃水分离性能。结果显示,在传统小分子乳化剂Span 80的基础上加入牡蛎壳粉(OSP)可以有效阻止液滴的合并,能显著提升乳液的稳定性。在75℃下通过偶氮二异丁腈(AIBN)引发自由基聚合制得了具有多孔结构的海绵材料,材料的密度、孔径和孔隙率可通过水量调节,当水的体积比达到98.22%时,材料呈现出可压缩性。通过接触角测量仪测试了材料的水接触角(WCA)为147.8°,油接触角接近0°,表明材料具有超疏水性和超亲油性。材料对不同油品的饱和吸油倍率在46.7~101.9 g/g,且在30 s内可达到吸油饱和;吸油后的材料可通过离心或挤压实现二次利用,该材料有望在油水分离领域得到广泛应用。
To cope with the increasing oil spill accidents and the intentional discharge of oily wastewater, a new oil-absorbing material with superhydrophobicity and reusability is needed. In this paper, a compressible polystyrene sponge material was fabricated via a high internal phase emulsion method. The structure of the material was characterized by SEM and IR, and the oil-water separation performance of the material was tested. The results indicated that the addition of oyster shell powder(OSP) to the traditional small molecule emulsifier Span 80 can effectively prevent the combination of droplets and significantly improve the stability of the emulsion. Azobisisobutyronitrile(AIBN) initiated free radical polymerization to produce a sponge material with porous structure at 75 ℃. The density, pore size and porosity of the material can be adjusted by water volume. When the volume ratio of water reaches 98.22%, the material exhibits compressibility. The water contact angle(WCA) of the material was tested to be 147.8°, and the oil contact angle was approaching to 0°, indicating its superhydrophobicity and superlipophilicity. It can selectively remove various oily contaminants from water with high absorption capacity of 46.7-101.9 g/g in 30 seconds. Material regeneration can be simply achieved via centrifugation or squeeze. Therefore, the OSP@PS sponge has a great potential application in oily water treatment.
作者
余传明
曾圣威
刘叶原
司徒紫晴
刘可
田丽芬
罗文静
梁远维
李泳
YU Chuanming;ZENG Shengwei;LIU Yeyuan;SITU Ziqing;LIU Ke;TIAN Lifen;LUO Wenjing;LIANG Yuanwei;LI Yong(Faculty of Chemistry and Environmental Science,Guangdong Ocean University,Zhanjiang 524088,China)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2021年第4期4200-4204,共5页
Materials Reports
基金
广东省教育厅青年创新人才类项目(2017KQNCX093)
湛江市科技计划项目(2017A02016,2018A01042)
广东海洋大学科研启动项目(R18018)
广东海洋大学大学生创新创业训练计划项目(CXXL2019300,CXXL2019301,CXXL2020294)。
关键词
高内相乳液
牡蛎壳粉
超疏水
海绵
油水分离
high internal phase emulsion(HIPE)
oyster shell powder(OSP)
superhydrophobicity
sponge
oil⁃water separation
作者简介
余传明,讲师,硕士研究生导师,2017年6月毕业于南京理工大学,获得化学工程与技术专业博士学位。同年进入广东海洋大学工作至今,主要从事油水分离功能材料的制备及应用研究;梁远维,讲师,2018年6月毕业于暨南大学,获得再生医学专业博士学位。同年进入广东海洋大学工作至今,主要从事创新靶向药物的合成及其应用,790007033@qq.com;李泳,教授,硕士研究生导师,2005年6月毕业于吉林大学,无机化学博士学位。同年进入广东海洋大学工作至今,主要从事水处理功能材料与光学材料的制备及应用研究。在国内外重要期刊发表文章90余篇,获授权专利30余项。yongli6808@126.com。
