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首页> 外文期刊>RSC Advances >Tris-imidazolium and benzimidazolium ionic liquids: a new class of biodegradable surfactants
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Tris-imidazolium and benzimidazolium ionic liquids: a new class of biodegradable surfactants

机译：三咪唑鎓和苯并咪唑鎓离子液体：一类新的可生物降解的表面活性剂

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摘要

Based on imidazolium and benzimidazolium, two series of novel tris-cationic ionic liquid surfactants containing ester groups were synthesized simply from readily available starting materials in high yields. Biodegradability and surfactants properties of the tris-imidazolium and tris-benzimidazolium ionic liquids were investigated. Some compounds showed assembly behaviour in the pure form (i.e. absence of solvent) and in the presence of polar or nonpolar solvents. These surfactants are effectively reducing the surface tension of water in the range of 28-31 mN m(-1). Through using the 'Closed-Bottle Test' OECD 301D, the incorporation of alkyl or phenyl side chains with ester groups in the same molecule significantly improved the biodegradation compared to sodium n-dodecyl sulphate (SDS) as a reference. The aliphatic alkyl side chain, i.e., butyl, hexyl, octyl, decyl and dodecyl, in both imidazolium and benzimidazolium ionic liquids have marked increasing biodegradation and phase behaviour results compared to aromatic side-chains.
机译：基于咪唑鎓和苯并咪唑鎓，简单地从容易获得的起始原料以高收率合成了两个系列的含有酯基的新型三阳离子离子液体表面活性剂。研究了三咪唑和三苯并咪唑离子液体的生物降解性和表面活性剂性能。一些化合物在纯形式（即没有溶剂）和极性或非极性溶剂的存在下表现出组装行为。这些表面活性剂可有效降低28-31 mN m（-1）范围内的水的表面张力。与正十二烷基硫酸钠（SDS）相比，通过使用“闭瓶试验” OECD 301D，在同一分子中掺入带有酯基的烷基或苯基侧链显着改善了生物降解。与芳族侧链相比，咪唑鎓和苯并咪唑鎓离子液体中的脂肪族烷基侧链，即丁基，己基，辛基，癸基和十二烷基具有显着增加的生物降解和相行为结果。

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