反离子盐(溴化钾)对不同疏水链长的Gemini阳离子表面活性剂表/界面活性的影响  

Effect of a counterionic salt(potassium bromide)on the surface/interfacial activity of Gemini cationic surfactants with different hydrophobic chain lengths

作　　者：姜亚洁 杨伟光 曹玉朋 鞠洪斌 王亚魁 耿涛 JIANG Ya-jie;YANG Wei-guang;CAO Yu-peng;JU Hong-bin;WANG Ya-kui;GENG Tao(China Research Institute of Daily Chemical Industry Co.,Ltd.,Taiyuan 030001,China)

机构地区：[1]中国日用化学研究院有限公司,山西太原030001

出　　处：《应用化工》2021年第12期3286-3292,共7页Applied Chemical Industry

基　　金：国家重点研发计划资助(2017YFB0308900);伽蓝研究基金(JALA2018)。

摘　　要：以1,4-二溴-2-丁烯为连接基团,脂肪酰胺丙基二甲胺(PKO-12,PKO-16,PKO-18)为疏水链合成了一类连接基团为不饱和链的酰胺基Gemini表面活性剂(GS-12,GS-16,GS-18)。通过FTIR和^(1)H NMR对产物进行结构表征,并对其Krafft温度、溴化钾耐受性进行了测试。研究了KBr浓度对表面活性剂的表/界面活性以及在石蜡膜上的润湿性能的影响。结果表明,成功制备3种酰胺基Gemini表面活性剂GS-12,GS-16,GS-18,且其Krafft温度随链长的增加而升高。GS-12的Krafft温度低于0℃,GS-16,GS-18的Krafft温度分别为27,27.5℃。在KBr浓度0~100 mmol/L范围内,随着KBr盐浓度的增加表/界面张力显著降低。此外,在一定KBr浓度范围内,随着盐浓度的增加,润湿性能增强。A class of Gemini surfactants(GS-12,GS-16,GS-18)with unsaturated chains as spacer groups were synthesized using 1,4-dibromo-2-butene and aliphatic amide propyl dimethylamine(PKO-12,PKO-16,PKO-18).The products were characterized by FTIR and ^(1)H NMR and tested for their Krafft temperature and counter ion salt tolerance.The effect of KBr concentration on the surface/interface activity of the surfactant and its wettability on paraffin membranes was investigated.The Krafft temperature of GS-12,GS-16,GS-18 increased with increasing chain length,and the Krafft temperature of GS-12 was below 0℃,while that of GS-16,GS-18 was 27℃and 27.5℃,respectively.In the KBr concentration range of 0~100 mmol/L,the surface/interface tension decreased significantly with increasing KBr salt concentration.In addition,the wettability increased with increasing salt concentration within a certain range of KBr concentration.

关 键 词：GEMINI表面活性剂 不饱和表面活性剂 表面张力 界面张力 接触角 

分 类 号：O647[理学—物理化学]