表面活性聚集体稳定非水相泡沫的实验研究  

Experimental study of non-aqueous foams stabilized with different surfactant aggregates

作　　者：张自伟 燕永利[1] 贺炳成 豆龙龙 史松 Ziwei Zhang;Yongli Yan;Bingcheng He;Longlong Dou;Song Shi(College of Chemistry&Chemical Engineering,Xi’an Shiyou University,Xi’an,Shaanxi 710065,China;The 10th Oil Production Factory,Changqing Oilfield Branch Company,PetroChina,Qingcheng,Gansu 745100,China;Shaanxi Jincheng Jiechen Vanadium Industry Co.,Ltd.,Shangluo,Shaanxi 726400,China)

机构地区：[1]西安石油大学化学化工学院,陕西西安710065 [2]中国石油天然气股份有限公司长庆油田分公司采油十厂采油工艺研究所,甘肃庆城745100 [3]陕西金诚杰出钒业有限责任公司,陕西商洛726400

出　　处：《日用化学工业（中英文）》2024年第10期1181-1190,共10页China Surfactant Detergent & Cosmetics

基　　金：国家自然科学基金资助项目(NO 22272126,21773183);西安石油大学研究生创新与实践能力培养项目(YCS23214226)。

摘　　要：非水相泡沫在化妆品、多孔材料、生物医药、油气开发等方向具有广泛的应用,然而表面张力较低等原因导致发泡困难,稳定性差,因此与泡沫相关的领域,一直是被攻克的难点。表面活性聚集体具有密度高,有序性良好等性质,可有效降低界面张力,被广泛应用于相关领域。文章以十二烷基磺酸钠、十二烷基苯磺酸钠为主剂,与甲酰胺和癸醇融合,制备出不同的表面活性聚集体并对其表征,观察非水相溶剂的起泡性和稳定性能。结果表明:表面活性聚集体均为层状液晶结构,属于非牛顿流体,有剪切-稀释的流变现象,并且表面活性剂的含量越高,表面活性聚集体层状液晶的结构越稳定,泡沫随层状液晶质量含量上升呈现出先增大后减少的趋势。SDBS/癸醇/甲酰胺的稳泡能力优于SDS/癸醇/甲酰胺,以甲酰胺为非水相时,SDBS/癸醇/甲酰胺中层状液晶为60%(w/%)时,泡沫稳定时长55 h以上。当非水相为癸醇时,SDBS/癸醇/甲酰胺中层状液晶为60%(w/%)时,泡沫稳定时长6 h以上。Non-aqueous foams have wide applications in cosmetics,porous materials,biomedicine,oil and gas development,etc.However,due to the low surface tension of nonaqueous solvents,they have difficulty in foaming and their foams usually have poor stability.Therefore,relevant field has been a difficult problem to overcome.Surfactant aggregates are widely used in related field due to their high density and ordered structure.In this work,different surfactant aggregates were prepared and characterized,in which sodium dodecyl sulfonate and sodium dodecylbenzene sulfonate were used as the main agents,and formamide and decanol were used as the non-aqueous phase.Then their foaming ability and foam stability for non-aqueous solvents were observed.The results showed that all these surfactant aggregates were of layered liquid crystal structure,belonging to non-Newtonian fluids,which had shear-thinning rheological phenomenon.The higher the content of surfactant,the more stable the layered liquid crystal structure of the surfactant aggregates.The foam volume was first increased and then decreased with the increase of layered liquid crystal content.The foam-stabilizing ability of SDBS/decanol/formamide system was better than that of SDS/decanol/formamide system.When formamide was used as the non-aqueous phase and the layered liquid crystal content in the SDBS/decanol/formamide system was 60%(w/%),the foam life was more than 55 h.When the non-aqueous phase was decanol and the layered liquid crystal content in the SDBS/decanol/formamide system was 60%(w/%),the foam life lasted for more than 6 h.

关 键 词：表面活性聚集体 层状液晶 稳定性 非水相泡沫 

分 类 号：TQ423[化学工程]