疏水性聚（烷氧基硅烷）有机凝胶作为溢油清理的吸附剂材料。
Hydrophobic poly(alkoxysilane) organogels as sorbent material for oil spill cleanup.
作者信息
Ozan Aydin Gulsah, Bulbul Sonmez Hayal
机构信息
Gebze Technical University, Department of Chemistry, P.O. Box 141, 41400 Gebze, Kocaeli, Turkey.
Gebze Technical University, Department of Chemistry, P.O. Box 141, 41400 Gebze, Kocaeli, Turkey.
出版信息
Mar Pollut Bull. 2015 Jul 15;96(1-2):155-64. doi: 10.1016/j.marpolbul.2015.05.033. Epub 2015 May 19.
In this study, reusable poly(alkoxysilane) organogels with high absorption capacities were synthesized by the condensation of a cyclo aliphatic glycol (UNOXOL™) and altering the chain length of the alkyltriethoxysilanes. The structural and thermal properties of cross-linked poly(alkoxysilane) polymers were determined by FTIR, solid-state (13)C and (29)Si CPMAS NMR and TGA. The oil absorbency of poly(alkoxysilane)s was determined through oil absorption tests, absorption and desorption kinetics. Results showed that the highest oil absorbency capacities were found to be 295% for hexane, 389% for euro diesel, 428% for crude oil, 652% for gasoline, 792% for benzene, 792% for toluene, 868% for tetrahydrofuran, and 1060% for dichloromethane for the poly(alkoxysilane) gels based on UNOXOL™ and dodecyltriethoxysilane. Owing to their hydrophobic structure, the poly(alkoxysilane) organogels can selectively absorb crude oil from water. The reusability of the absorbents was quantitatively investigated, demonstrating that absorbents can be used effectively at least nine times.
在本研究中，通过脂环族二醇（UNOXOL™）的缩合反应并改变烷基三乙氧基硅烷的链长，合成了具有高吸收容量的可重复使用的聚（烷氧基硅烷）有机凝胶。通过傅里叶变换红外光谱（FTIR）、固态（13）C和（29）Si交叉极化魔角旋转核磁共振（CPMAS NMR）以及热重分析（TGA）测定了交联聚（烷氧基硅烷）聚合物的结构和热性能。通过吸油试验、吸收和解吸动力学测定了聚（烷氧基硅烷）的吸油率。结果表明，基于UNOXOL™和十二烷基三乙氧基硅烷的聚（烷氧基硅烷）凝胶对己烷的最高吸油率为295%，对欧标柴油为389%，对原油为428%，对汽油为652%，对苯为792%，对甲苯为792%，对四氢呋喃为868%，对二氯甲烷为1060%。由于其疏水结构，聚（烷氧基硅烷）有机凝胶可以从水中选择性地吸收原油。对吸收剂的可重复使用性进行了定量研究，结果表明吸收剂至少可以有效使用九次。
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