阴-非离子型高分子表面活性剂的制备及性能  

Preparation and properties of anionic-nonionic polymeric surfactant

作　　者：吕斌 刘煜晨 杨海恩 胡家瑞 高党鸽 LYU Bin;LIU Yuchen;YANG Haien;HU Jiarui;GAO Dangge(College of Bioresources Chemical&Materials Engineering,Shaanxi University of Science&Technology,Xi'an 710021,Shaanxi,China;Xi'an Key Laboratory of Green Chemicals and Functional Materials,Xi'an 710021,Shaanxi,China;Xi'an Changqing Chemical Group Co.,Ltd.,Xi'an 710021,Shaanxi,China;National Demonstration Center for Experimental Light Chemistry Engineering Education,Shaanxi University of Science&Technology,Xi'an 710021,Shaanxi,China)

机构地区：[1]陕西科技大学轻工科学与工程学院,陕西西安710021 [2]西安市绿色化学品与功能材料重点实验室,陕西西安710021 [3]西安长庆化工集团有限公司,陕西西安710021 [4]陕西科技大学轻化工程国家级实验教学示范中心,陕西西安710021

出　　处：《精细化工》2025年第1期112-118,127,共8页Fine Chemicals

基　　金：陕西省重点研发计划项目(2023YBGY-483);陕西省创新能力支撑计划项目(2021TD-16)。

摘　　要：脂肪醇聚氧乙烯醚(AEO)和丙烯酸(AA)通过酯化反应合成了脂肪醇聚氧乙烯醚丙烯酸酯中间体(AEO-AA),AEO-AA与苯乙烯磺酸钠、丙烯酸十二酯通过自由基聚合反应制备了阴-非离子型高分子表面活性剂(P-AASL)。采用FTIR、^(1)HNMR、GPC、DLS和TEM对P-AASL进行了表征,通过DSC、光学接触角测试仪、表面张力仪、旋转滴界面张力仪对其性能进行了测试。考察了m(P-AASL)∶m(石油磺酸钠)对复配表面活性剂体系表界活性和洗油效率的影响。结果表明,P-AASL数均相对分子质量为12121,相对分子质量为14027,多分散指数为1.157;P-AASL在水溶液中为分散均匀的球状胶束,平均粒径为141.7 nm,多分散指数为0.136;P-AASL水溶液的临界胶束质量浓度为0.62 g/L,最低表面张力为33.4 mN/m;质量分数0.3%的P-AASL水溶液可将油水界面张力降低至1×10^(–1)mN/m,将油湿性天然岩心的水接触角降至40°以下;复配表面活性剂体系可将原油和水界面张力降至1×10^(–3)mN/m,洗油效率可达77%左右。Anionic-nonionic polymeric surfactant(P-AASL)was prepared from free radical polymerization of fatty alcohol polyoxyethylene ether acrylate intermediates(AEO-AA),which was obtained from esterification reaction of fatty alcohol polyoxyethylene ether(AEO)and acrylic acid(AA),with sodium styrene sulfonate as well as dodecyl acrylate,and characterized by FTIR,^(1)HNMR,GPC,DLS and TEM.The surfactant P-AASL were then evaluated by DSC,optical contact angle tester,surface tension tester and spinning drop interfacial tensiometer,while the influence of m(P-AASL)∶m(sodium petroleum sulfonate)on the interface activity and oil washing efficiency of composite surfactant system were investigated.The results showed that P-AASL displayed a number-average relative molecular mass of 12121,weight-average relative molecular mass of 14027,and a polydispersion index of 1.157.P-AASL presented as a uniformly spheroidal micelle with an average particle size of 141.7 nm and a polydispersion index of 0.136 in aqueous solution.The critical micelle mass concentration of P-AASL aqueous solution was 0.62 g/L,and the lowest surface tension was 33.4 mN/m.P-AASL aqueous solution with 0.3%mass fraction could reduce the oil-water interfacial tension to 1×10^(-1)mN/m,and the water-contact angle of oil-wet natural core to less than 40°.The compound surfactant system could reduce the interfacial tension between crude oil and water to 1×10^(-3)mN/m,with an oil washing efficiency of about 77%.

关 键 词：高分子表面活性剂 阴-非离子型表面活性剂 脂肪醇聚氧乙烯醚 界面张力 复配协同 

分 类 号：TQ423[化学工程]