日用化学工业2011，Vol.41Issue(2)：92-96,108,6.
醇醚磺酸盐的合成及其耐温耐盐和界面化学性能研究
Study of synthesis of polyethoxylated fatty alcohol sulfonate and its heat resistance, salt tolerance as well as interfacial chemical properties
曹翔宇 1龙海华 1崔正刚1
作者信息
- 1. 江南大学,化学与材料工程学院,江苏,无锡,214122
- 折叠
摘要
Abstract
Polyethoxylated coconut fatty alcohol reacted with metallic sodium in benzene as reaction medium to form sodium polyethoxylated coconut fatty alcoholate, and the latter further reacted with 2 -ehloroethanesulfonate in toluene as solvent to form the product sodium polyethoxylated coconut fatty alcohol sulfonate (CAPES) with a yield of 82％ achieved.Characterized by IR and MS,the final product was proved to be mixed homologues of sodium polyethoxylated C12/C14 alcohol sulfonates with n between 1 to 8.Examination to the properties of CAPES indicated that CAPES has a thermal stability of higher than 97％ when dissolved in neutral or slightly alkaline aqueous media and set for 96 h at 80 ℃, which is conspicuously higher than that of sodium polyethoxylated alcohol sulfate (AES).At 45 ℃, the tolerance of CAPES to NaCl, CaC12 and MgSO4 in water reaches higher than 115,167 and 300 g/L respectively, which is equivalent to that of AES.Using CAPES as surfactant to prepare microemulsions, the optimum salinity and the salt concentration range in which middle phase microemulsions are formed are similar to that of AES.The salt tolerance of CAPES is much better than that of sodium heavy alkylbenzene sulfonates (HABS).The interfacial activity of CAPES is similar to AES but much better than sodium dodeeyl sulfate (SDS).By blending with amphoterics,CAPES can reduce Daqing crude oil/water interfacial tension to a magnitude of 10-3 mN/m at 45 ℃ without adding any alkaline agent or neutral electrolyte.关键词
椰油醇聚氧乙烯醚磺酸盐/合成/性能/无碱驱油剂Key words
polyethoxylated coconut fatty alcohol sulfonates/ synthesis/ chemical property/ alkali -free surfactant - polymer flooding分类
化学工程引用本文复制引用
曹翔宇,龙海华,崔正刚..醇醚磺酸盐的合成及其耐温耐盐和界面化学性能研究[J].日用化学工业,2011,41(2):92-96,108,6.
