Relationship between structure and biodegradability of gemini imidazolium surface active ionic liquids
作者:Guowei Wang、Xiaoqing Xu、Yu Sun、Linghua Zhuang、Cheng Yao
DOI:10.1016/j.molliq.2018.12.066
日期:2019.3
SAILs with ester functional group ([CnPim2]Br2 and [peCnBim2]Cl2) showed much higher biodegradation rates than those of [CnIM]Br and [CnBim2]Br2. The location of ester group played an obvious role on biodegradation. Gemini SAILs containing ester group in the side alkyl chains ([peCnBim2]Cl2) showed much higher biodegradation ratio than those of [CnPim2]Br2 (ester functional group in spacer). [peCnBim2]Cl2
三种含酯的双子烷基咪唑鎓表面活性离子液体[1,4-双(1-烷基-氧丙基-咪唑鎓)-丁烷二氯化物],缩写为[peC n Bim 2 ] Cl 2(n = 12,14,16),由咪唑,1,4-二溴丁烷,1-氯-3-丙醇和各种脂肪族羧酸合成。[peC n Bim 2 ] Cl 2的化学结构通过H-核磁共振,傅立叶变换红外光谱和元素分析得到证实。[peC n Bim 2 ] Cl 2的热学性质用热重分析和差示扫描量热法研究。使用张力测定法,电导率证明[peC n Bim 2 ] Cl 2的胶束化参数,吸附/聚集性质和热力学参数。[peC n Bim 2 ] Cl 2水溶液的临界胶束浓度值随着烷基链长度的增加(从C12到C16)而降低。胶束的形成是自发的,放热的,并且是由熵驱动的。 使用OECD 301D,对九种双咪唑咪唑SAILs([peC n Bim 2 ] Cl 2,[C n Pim 2 ]