阳离子型氨基聚醚有机硅表面活性剂的合成及性能研究

Synthesis and performance of cationic amino/polyether group containing polysiloxane surfactant

以八甲基环四硅氧烷、N,N-二甲基-γ-氨丙基-γ-氨丙基甲基二甲氧基硅烷、N-β-氨乙基-γ-氨丙基甲基二甲氧基硅烷等为原料进行单体聚合反应制得氨基硅中间体,再与环氧聚醚开环反应制备一种水溶性的氨基聚醚有机硅表面活性剂(SPEAS),并用IR和1H-NMR对中间体及终产物进行了结构表征。结果表明,该表面活性剂的临界胶束浓度为7×10-4mol/L,γcmc=28.5mN/m(25℃),与非离子表面活性剂配伍,质量比分别1∶3.1∶1时,体系浊点消失。5g/LSPEAS水溶液对汽油的增溶力达59.28%,对八甲基环四硅氧烷的增溶力达75.40%。SPEAS与阴、阳离子树脂、助剂配伍使用,无漂油分层。水在中间体AS膜接触角达73.00°,而在SPEAS膜上接触角降至24.50°,则SPEAS亲水性良好。

A water-soluble amino silicone polyether surfactant （SPEAS） was synthesized by epoxy polyether and amino silicon（AS）,which was synthesized by octamethylcy-clotetrasiloxane with N, N-2-methyl-γ-aminopropyl-γ-aminopropyl methyl dimethoxy silane and N-β-aminoethy-γ-aminopropyl methyl dimethoxy silane and the structure of intermediates and final products was characterized by infrared spectrum （IR） and 1 H-NMR. The results showed that the surfactant critical micelle concentration was 7 × 10-4 mol / L, γcmc = 28. 5 mN / m （25℃）. And non-ionic surfactant compatibility, quality ratio of 1 ： 3,1 ： 1, the disappearance of the cloud point system. 5g/L SPEAS aqueous solubilization capacity of gasoline up to 59.28 percent, on the 8-methyl siloxane ring 4 solubilization capacity up to 75.40%. SPEAS and anion and cation resins, additives combined with the use of drift-free oil layer. AS film of water in the intermediate contact angle 73. 00°, while the contact angle decreased in the membrane SPEAS 24. 50°, while SPEAS hydrophilic considerable.