低聚表面活性剂的结构及性质

Structures and Properties of Oligomeric Surfactant

Gemini表面活性剂不同于常规表面活性剂,其临界胶束浓度低,润湿性好,表面张力、Krafft点低,聚集形态特殊,引起广泛关注。介绍了近年来有关阴离子、阳离子和两性离子低聚表面活性剂的最新结构,阐述了聚合度、联接基和疏水基对Gemini表面活性剂性质的影响,同时介绍了其应用。

Gemini surfactants were different from conventional surfactants in that they had much lower critical micelle concentration( CMC ),better wetting properties,lower surface tention and Krafft point and unique aggregation morphology.The chemical structures for anionic,cationic and amphoteric oligomeric surfactants were introduced.The effects of oligomeric degree,space groups,and carbon chain of hydrophilic group on surfactant properties were described and their applications were also presented.