Synthesis and comparative behaviour study of fluorocarbon and hydrocarbon cationic surfactants in aqueous media
作者:Thi Huong Viet Ngo、Christine Damas、Régine Naejus、Robert Coudert
DOI:10.1016/j.jfluchem.2010.03.004
日期:2010.6
A series of perfluorinated cationic surfactants and their corresponding hydrocarbon ones whose general formula is CnX2n+1–C(O)NH–(CH2)3–N+Me3, I−, with X = F, H and n = 9, 11, have been synthesized via two steps. Their aggregative and surface-active properties were studied in aqueous solution using tensiometry and conductimetry. The critical micelle concentrations and the molecular areas at the air/water
一系列全氟化阳离子表面活性剂和它们的相应的烃那些,其通式为C Ñ X 2 Ñ 1 -C(O)NH-(CH 2)3 -N +我3,我- ,其中X = F,H和ñ = 9、11已通过两个步骤合成。使用张力法和电导率法研究了它们在水溶液中的聚集和表面活性。氟化表面活性剂的临界胶束浓度和在空气/水界面的分子面积低于其烃同系物的临界胶束浓度和分子面积。已经研究了胶束聚集数和几何堆积参数。结果表明,碳氟化合物表面活性剂倾向于形成层状聚集体,而烃类表面活性剂缔合为球形聚集体。