文献类型：期刊文献

中文题名：SiO2纳米颗粒与十六烷基二甲基乙基溴化铵协同构建CO2/水乳液及其表征

英文题名：Stabilization and characterization of CO2/water emulsions synergistically constructed with silica nanoparticles and hexadecyl dimethyl ethyl ammonium bromide

作者：朱梦雅[1];胡冬冬[1];包磊[1];赵玲[1];刘涛[1]

机构：[1]华东理工大学化学工程联合国家重点实验室

年份：2019

卷号：48

期号：8

起止页码：826

中文期刊名：石油化工

外文期刊名：Petrochemical Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：国家自然科学基金项目（21676081）

语种：中文

中文关键词：SiO2纳米颗粒;表面活性剂;协同作用;CO2/水乳液

外文关键词：silica nanoparticles;surfactant;synergistic effect;CO2/water emulsion

摘要：利用SiO2纳米颗粒与阳离子表面活性剂十六烷基二甲基乙基溴化铵(EHDAB)协同构建CO2/水乳液,通过破乳时间、Zeta电位、吸附等温线、界面张力以及表观黏度的测试,研究了EHDAB在SiO2颗粒表面的吸附情况及对所构建乳液稳定性的影响。实验结果表明,对于EHDAB/SiO2构建的乳液,随EHDAB含量的增加,乳液稳定性先增加后降低,然后趋于稳定,且热稳定性较好。EHDAB与SiO2的质量浓度比为0.1时,所构建乳液的稳定性最高。EHDAB主要用于乳液的形成,SiO2纳米颗粒则用于增强乳液的稳定性,固体颗粒稳定乳液的机理主要为机械阻隔机理。
This work aimed at studying the synergistic effect of silica nanoparticles and cationic surface active agent hexadecyl dimethyl ethyl ammonium bromide(EHDAB)on constructing CO2/water emulsion.The adsorption condition of EHDAB on the surface of SiO2 particles and the effect on stability of the constructed emulsion were investigated by demulsification time,Zeta potential,DLS,adsorption isotherm,interfacial tension and apparent viscosity test.The result shows that,with the concentration of the EHDAB increasing,the stability of emulsion stabilized by EHDAB/SiO2 increased first and then decreased,and finally reached a plateau value with good thermal stability.The EHDAB/SiO2 concentration ratio of 0.1 provided the best performance for the constructed emulsion.EHDAB is mainly used for the formation of emulsions,and SiO2 nanoparticles are used to enhance the stability of emulsions.The mechanism of solid particle-stabilized emulsion is mechanical barrier mechanism.