摘要
以丙烯酸甲酯、不同的长链脂肪酸(癸酸、月桂酸、肉豆蔻酸、棕榈酸)及乙二胺为主要原料,经过加成、酰化及皂化等反应,合成了一类Gemini型阴离子表面活性剂N,N′-双脂肪酰基乙二胺二丙酸钠(DAMC)。实验还对合成的表面活性剂(C10-DAMC、C12-DAMC、C14-DAMC、C16-DAMC)相关性能进行了表征。在25℃时,γCMC 分别为28.3、27.1、34.7、41.0mN/m;临界胶束浓度(CMC)分别为3.4×10-3、9.6×10-4、3.8×10-4、1.3×10-4mol/L;胶束聚集数(Nm)分别为47.3、41.6、36.2、30.7。合成样品显示出优良的乳化、润湿、泡沫及耐硬水洗涤等应用性能。
A kind of anionic Gemini surfactant (DAMC) with N,N′-dialkylamide and carboxylate groups was prepared by addition, acylation and soap reaction, in which methyl acrylate, fatty acid (decanoicacid, lauric acid, myristic acid and palmitic acid) and ethylene diamine were used as main materials. The properties of these surfactants (C_10-DAMC, C_12-DAMC, C_14-DAMC,C_16-DAMC) were investigated. These surfactants have outstanding surface chemical properties. The γ_CMCof these surfactants is 28.3,27.1,34.7,41.0 mN/mrespectively. The critical middle concentration is 3.4×10^-3,9.6×10^-4,3.8×10^-4,1.3×10^-4mol/L. The micellar aggregation number (Nm) is 47.3,41.6,36.2,30.7 at 25 ℃. The surfactants also show good properties of emulsification, wetting, foaming and excellent detergence in hard water.
出处
《华东理工大学学报（自然科学版）》
CAS
CSCD
北大核心
2004年第5期502-505,共4页
Journal of East China University of Science and Technology
