Doan Hoan Ngoc, Nguyen Dien Kim, Vo Phu Phong, Hayashi Kohei, Kinashi Kenji, Sakai Wataru, Tsutsumi Naoto, Huynh Dai Phu
Doctor's Program of Materials Chemistry, Graduate school of Science and Technology, Internship Student, Master's Program of Innovative Materials, and Faculty of Materials Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo, Kyoto 606-8585, Japan.
Faculty of Materials Technology, Ho Chi Minh City University of Technology and Polymer Research Center, Ho Chi Minh City University of Technology, Vietnam National University, Ho Chi Minh City 700000, Vietnam.
ACS Omega. 2019 Sep 16;4(14):15992-16000. doi: 10.1021/acsomega.9b02091. eCollection 2019 Oct 1.
The demand for an efficient oil sorbent with high sorption capacity, low cost, scalable fabrication, and high selectivity for the cleanup of spreading oil on water is increasingly urgent due to the frequent occurrence of oil spill accidents in seawater all over the world. In this study, porous polystyrene (PS) fibers with high hydrophobicity and superoleophilicity were directly fabricated by a centrifugal spinning method (CS). The effect of solvents, tetrahydrofuran (THF), and dimethylformamide (DMF) on the morphology and porous structure of the polystyrene fibers was evaluated by using scanning electron microscopy and nitrogen adsorption-desorption experiments. The formation mechanism for the porous structure on the fibers was also evaluated. The oil sorption capacities of the PS fibers for silicon oil, pump oil, and vegetable oil were investigated. The highest oil sorption capacity was found in PS fibers fabricated from PS solution with a THF/DMF weight ratio of 1/3, which exhibited the highest specific surface area, pore volume, and porosity. The high productivity and highly porous structure of PS fibers indicate that CS is a promising method to fabricate porous fibers for the cleanup of oil spills.
由于世界各地海水中频繁发生石油泄漏事故，对于一种具有高吸附容量、低成本、可规模化制备且对水面上扩散的油污具有高选择性的高效吸油剂的需求日益迫切。在本研究中，通过离心纺丝法（CS）直接制备了具有高疏水性和超亲油性的多孔聚苯乙烯（PS）纤维。利用扫描电子显微镜和氮气吸附-脱附实验评估了溶剂四氢呋喃（THF）和二甲基甲酰胺（DMF）对聚苯乙烯纤维形态和多孔结构的影响。还评估了纤维上多孔结构的形成机制。研究了PS纤维对硅油、泵油和植物油的吸油能力。在由THF/DMF重量比为1/3的PS溶液制备的PS纤维中发现了最高的吸油能力，该纤维具有最高的比表面积、孔体积和孔隙率。PS纤维的高生产率和高度多孔结构表明，离心纺丝法是一种制备用于清理油污的多孔纤维的有前途的方法。
