摘要
以氯乙酰氯、间苯二甲酰氯、长链伯胺(碳链长度为8、12、14和16)和N,N-二甲基乙醇胺为原料合成了一系列含多官能团Gemini阳离子表面活性剂目标产物(I8、I12、I14和I16)。采用红外光谱和核磁氢谱对产物进行了结构表征。通过电导率法测量目标产物在不同温度下的临界胶束浓度(CMC),并计算出胶束的热力学参数(ΔGm^0、ΔHm^0、ΔSm^0);在298.15K条件下,通过表面张力法测定目标产物的表面张力(γCMC),并探讨了目标产物的泡沫性能和乳化性能。结果表明:目标产物有较低的临界胶束浓度值(CMC),在298.15K条件下,最低CMC达到0.05mmol/L;I16的γCMC最低为36.14mN/m;泡沫性和乳化性测试结果表明,在298.15K条件下,I8的起泡能力最好,I12和I14的稳泡性最好,均达到100%;目标产物对苯和二甲苯具有很好的乳化性能,其中I12对二甲苯的乳化性能最好,乳化时间为900s,I16对苯的乳化性能最好,乳化时间为629s。
A series of Gemini surfactant(I8,I12,I14,I16) containing polyfunctional group were synthesized by using chloroacetyl chloride,isophthaloyl chloride,long alkyl chain primary amine(carbon chain length was 8,12,14,16),and N,N-dimethylethanolamine as main raw materials.The structures of product were characterized by FTIR and 1H NMR.The critical micelle concentrations(CMC) and the relevant thermodynamic parameters(ΔGm^0,ΔHm^0,ΔSm^0) were determined at different temperatures by electrical conductivity measurements.The surface tensions(γCMC) were determined by surface tension method at 298.15 K.The foaming properties and emulsifying properties were investigated.The results show that target products have lower CMC values,and the lowest CMC value reaches 0.05 mmol/L at 298.15 K.The minimum value of γCMCfor I16 is 36.14 mN/m.Foam properties and emulsification test results show that I8 exhibits the best foaming ability;I12 and I14 exhibit the best foam stability(100%) at 298.15 K.As emulsifying agent for benzene and xylene the target products have good emulsifying properties.Among these products,I12 has the best emulsifying properties for xylene,and the emulsification time is 900 s;I16 has the best emulsifying properties for benzene,and the emulsification time is 629 s.
作者
王丽艳
杨佳
李云晴
唐丽
刘家庆
杜昱嬴
吴定成
WANG Liyan;YANG Jia;LI Yunqing;TANG Li;LIU Jiaqing;DU Yuying;WU Dingcheng(Chemistry and Chemical Engineering Institute,Qiqihar University,Qiqihar 161006,Heilongjiang,China)
出处
《化工进展》
EI
CAS
CSCD
北大核心
2020年第8期3278-3286,共9页
Chemical Industry and Engineering Progress
基金
齐齐哈尔大学研究生创新科研项目(YJSCX2018-ZD07)
黑龙江省自然科学基金联合引导项目(LH2019B021)
黑龙江省大学生创新创业训练计划(201910232001)。
关键词
多官能团表面活性剂
电导率
表面张力
起泡性能
乳化性能
polyfunctional surfactant
conductivity
surface tension
foaming properties
emulsifying properties