Cui Xiaoling, Shao Hong, Song Yuanrui, Yang Song, Wang Fengwei, Liu Huarong
CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China Hefei Anhui 230026 P. R. China
Key Laboratory of Tobacco Chemistry, Zhengzhou Tobacco Research Institute of CNTC Zhengzhou Henan 450001 P. R. China.
RSC Adv. 2019 Aug 15;9(44):25730-25738. doi: 10.1039/c9ra05220h. eCollection 2019 Aug 13.
In this paper, we report on the fabrication of highly interconnected porous poly(butyl acrylate--stearyl methacrylate--styrene--divinylbenzene) (P(BA-SMA-St-DVB)) monoliths and microbeads the polymerization of high internal phase emulsions (HIPEs) and double emulsions by using a 75% to 85% internal water phase. The morphology and specific surface area were characterized with scanning electron microscopy (SEM) and nitrogen adsorption/desorption measurements, respectively. The oil absorbency, including oil absorption, oil absorption rate and oil retention ratio of as-prepared resins (both monoliths and microbeads), was studied by using kerosene and carbon tetrachloride as analogues of oil pollutants. Thermoanalysis was also carried out to analyze the oil absorption mechanism. The results showed that the resin had a good oil absorption efficiency of aliphatic hydrocarbon and chlorohydrocarbon. The best mass-based absorption capacity of the microbeads towards kerosene and carbon tetrachloride is 8.52 and 20.82 times its own weight, respectively, which is higher than those of the corresponding polyHIPE monoliths. Meanwhile, these microbeads of average 320 microns in diameter have good thermal stability and can be easily collected and recycled by a simple filtration washing method.
在本文中，我们报道了通过使用75%至85%的内水相，由高内相乳液（HIPEs）和双重乳液聚合制备高度互连的多孔聚（丙烯酸丁酯 - 甲基丙烯酸硬脂酯 - 苯乙烯 - 二乙烯基苯）（P(BA - SMA - St - DVB)）整体柱和微珠。分别使用扫描电子显微镜（SEM）和氮吸附/脱附测量对其形态和比表面积进行了表征。以煤油和四氯化碳作为油污染物的类似物，研究了所制备树脂（整体柱和微珠）的吸油性，包括吸油量、吸油率和持油率。还进行了热分析以分析吸油机理。结果表明，该树脂对脂肪烃和氯代烃具有良好的吸油效率。微珠对煤油和四氯化碳的最佳质量吸油容量分别为其自身重量的8.52倍和20.82倍，高于相应的聚HIPE整体柱。同时，这些平均直径为320微米的微珠具有良好的热稳定性，并且可以通过简单的过滤洗涤方法轻松收集和回收。
