[苄基三甲基铵][芥酰胺苯甲酸]离子液体表面活性剂的合成及性能  

Synthesis and properties of benzyltrimethylammonium cis-4-erucylamidobenzoate ionic liquid surfactant

作　　者：赵炳天 杨哲 郭爽 张永民 ZHAO Bingtian;YANG Zhe;GUO Shuang;ZHANG Yongmin(Key Laboratory of Synthesis and Biocolloid,Ministry of Education,College of Chemistry and Materials Engineering,Jiangnan University,Wuxi 214122,China;Key Laboratory of Green Cleaning Technology and Detergents,Hangzhou 310056,China)

机构地区：[1]江南大学化学与材料工程学院,合成与生物胶体教育部重点实验室,江苏无锡214122 [2]浙江省绿色清洁技术及洗涤用品重点实验室,浙江杭州310056

出　　处：《印染》2023年第9期71-75,共5页China Dyeing and Finishing

基　　金：国家自然科学基金资助项目(22072058,21503094);浙江省绿色清洁技术及洗涤用品重点实验室开放课题。

摘　　要：以菜籽油加工过程中的下脚料芥酸(二十二碳-13-烯酸)为原料,制备了一种超长碳链的脂肪酸离子液体表面活性剂[苄基三甲基铵][芥酰胺苯甲酸](ErBBTA)。通过傅里叶红外光谱仪与核磁波谱确认了其分子结构。研究结果表明,超长碳链和苯环结构的引入可赋予ErBBTA极强的自组装能力,临界胶束浓度仅为0.0035 mmol/L,胶束化自由能达到-67.90 kJ/mol。当浓度达到临界交叠浓度(1.19 mmol/L)时,ErBBTA可以在水溶液中自组装形成蠕虫状胶束,赋予体系显著的黏弹性,能作为流变调节剂应用于日用化学品、石油开采等领域。A new ultra-long-chain fatty acid-derived ionic liquid surfactant,benzyltrimethylammonium cis-4-erucylamidobenzoate(ErBBTA)is synthesized using erucic acid,the waste of rapeseed oil processing,as raw material.Molecular structure is characterized using FT-IR,1 H NMR and 13C NMR spectroscopy.The results demonstrate that the introduction of ultra-long-chain and benzene ring enable ErBBTA with strong self-as⁃sembly ability.Its critical micelle concentration is as small as 0.0035 mmol/L,and the standard free energy of micellization is as large as-67.90 kJ/mol.Moreover,ErBBTA can self-assembly into threadlike micelles above 1.19 mmol/L,and therefore enable significant viscoelasticity to the solution,making it potential as rheological regulator used in daily use chemicals,oil exploitation and other fields.

关 键 词：离子液体 表面活性剂 芥酸 增黏 胶束化 

分 类 号：TQ03-39[化学工程]