摘要
分别采用表面张力仪、紫外-可见分光光度计和透射电子显微镜(TEM)测试了脂肪醇聚氧乙烯醚羧酸钠(AE9C)与双癸基羟乙基甲基氯化铵(DEQ)复配体系的表面性能、稳定性和聚集行为。结果表明,复配体系具有明显的协同增效作用,当AE9C与DEQ的质量比为4∶6时,表面的饱和吸附量达到最大(2.15×10-10mol/cm2),极性头基所占的截面积最小(0.77 nm2),表面活性最强;复配体系具有很好的稳定性,AE9C与DEQ的质量比大于5∶5时,即使质量分数为10.0%也能形成稳定透明的溶液,且放置1个月不分层;AE9C与DEQ的质量比为4∶6,质量分数为4.0%时,形成的溶液具有一定的黏度,TEM测试发现溶液中存在无规排列的规则棒状聚集体。
Surface activity,stability and aggregation behavior of blend systems of sodium fatty alcohol ether carboxylate（ AE9C） and bis- decylmethylhydroxyethylammonium chloride（ DEQ） were measured by surface tensiometer,UV- Vis spectrophotometer and transmission electron microscopy（ TEM）,respectively. Results showed that the blend system that displays best synergistic effect is at the mass ratio of m（ AE9C） ∶ m（ DEQ） =4∶ 6,which displays Γmax= 2. 15 × 10^- 10 mol / cm2,Amin= 0. 77 nm^2. The blend system shows very excellent stability. When the mass ratio of AE9 C and DEQ is bigger than 5 ∶ 5,even if the mass concentration achieves10. 0%,uniform and stable solutions are formed and the solutions can keep its homogeneity without stratification after a month. When the mass fraction is 4. 0% with m（ AE9C） ∶ m（ DEQ） = 4∶ 6,a solution with fixed viscosity is formed and TEM test results depicted random arrangement of rod- like aggregates.
出处
《日用化学工业》
CAS
CSCD
北大核心
2015年第4期181-184,共4页
China Surfactant Detergent & Cosmetics
基金
"十二五"国家科技支撑计划资助项目(2014BAE03B03)
山西省科技创新项目(2012102008)
山西省专利推广实施项目(141015)
关键词
脂肪醇聚氧乙烯醚羧酸钠
双癸基羟乙基甲基氯化铵
复配性能
sodium fatty alcohol ether carboxylate
bis-decylmethylhydroxyethylammonium chloride
mixed property
