摘要
通过表面张力法、荧光探针法、帆布沉降法、改进的Ross-Miles法和压热釜式反应等方法,得到了壬基酚聚氧乙烯醚(n)硫酸钠(NPEnS)同系样品的典型表面活性参数、泡沫和润湿性能以及酸催化水解速率常数。结果表明,随着EO链段长度n增加,cmc,pC20,Γm和cmc/C20等参数减小,发泡力降低,酸催化水解速率常数减小,而润湿性能增加,γcmc和分子截面积A增大,但是胶束平均聚集数N、胶束微环境的极性和泡沫稳定性却变化不大。
Typical surface activity parameters ,foaming, wetting performances and acid catalyzed hydrolysis rate constant of homologs of sodium nonylphenol polyoxyethylene ether （n） sulfates （NPEnS） with different polyethoxy groups were investigated by means of surface tension, fluorescence probe, modified Ross - Miles method, Draves test and autoclave reaction method respectively. Results showed that, following the increase of length of EO chain n, the parameters cmc ,pC20,Гm, cmc/C20, and foaming power, as well as the hydrolysis rate constant decrease ,while the y Am, and the wetting power increase. However, no significant effects of n on average micelle aggregation number Nm, the micro - environmental polarity of the NPEnS micelles and the stability of foam were observed.
出处
《日用化学工业》
CAS
CSCD
北大核心
2011年第1期1-5,共5页
China Surfactant Detergent & Cosmetics
基金
江苏省精细石油化工重点实验室开放基金资助项目(KF0903)
中央高校基本科研业务费专项基金资助项目(JUSRP20905)
