Abstract: 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.
1 Carmody O, Frost R, Xi Y, et al. Journal of Thermal Analysis and Calorimetry, 2008, 91(3), 809. 2 Ivshina I B, Kuyukina M S, Krivoruchko A V, et al. Environmental Science: Processes & Impacts, 2015, 17(7), 1201. 3 Yu P, Bao R Y, Shi X J, et al. Carbohydrate Polymers, 2016, 155, 507. 4 Mapelli F, Scoma A, Michoud G, et al. Trends in Biotechnology, 2017, 35, 860. 5 Yu L, Yang H, Wang Y, et al. Powder Technology, 2017, 311, 257. 6 Zhang T, Kong L Y, Dai Y T, et al. Chemical Engineering Journal, 2017, 309, 7. 7 Zhou S, Hao G, Zhou X, et al. Chemical Engineering Journal, 2016, 302, 155. 8 Zhang T, Yue X, Yang D, et al. Applied Organometallic Chemistry, 2018, 32(4), e4244. 9 Yan L, Li Q, Wang X, et al. Polymer-Plastics Technology and Enginee-ring, 2017, 56(17), 1857. 10 Rong J, Qiu F, Zhang T, et al. Chemical Engineering Journal, 2017, 322, 397. 11 Yue X, Zhang T, Yang D, et al. Chemical Engineering Journal, 2017, 309, 522. 12 Temnikov M N, Kononevich Y N, Meshkov I B, et al. Polymer, 2018, 138, 255. 13 Zhang T, Yuan D, Guo Q, et al. Food and Bioproducts Processing, 2019, 114, 154. 14 Yu C M, Zhuang X H, Zeng S W, et al. RSC Advances, 2019, 9(31), 17543. 15 Aveyard R, Binks B P, Clint J H. Advances in Colloid and Interface Science, 2003, 100, 503. 16 Zhang N, Zhong S, Zhou X, et al. Chemical Engineering Journal, 2016, 298, 117. 17 Zhang N, Zhong S, Chen T, et al. RSC Advances, 2017, 7(37), 22946. 18 Ma L, Luo X, Cai N, et al. Applied Surface Science, 2014, 305, 186.
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2021, Vol. 35 
