基于两亲性Janus-SiO_(2)颗粒制备高稳定性O/W型Pickering乳液  

Preparation of highly stable O/W Pickering emulsion based on amphiphilic Janus-SiO_(2)particles

作　　者：张可可 邹欢金 樊晔 张永民 刘雪锋 方银军 Keke Zhang;Huanjin Zou;Ye Fan;Yongmin Zhang;Xuefeng Liu;Yinjun Fang(Key Laboratory of Synthetic and Biological Colloids,Ministry of Education,Jiangnan University,Wuxi,Jiangsu 214122,China;School of Chemical&Material Engineering,Jiangnan University,Wuxi,Jiangsu 214122,China;Zanyu Technology Group CO.,Ltd.,Hangzhou,Zhejiang 310030,China)

机构地区：[1]江南大学合成与生物胶体教育部重点实验室,江苏无锡214122 [2]江南大学化学与材料工程学院,江苏无锡214122 [3]赞宇科技集团股份有限公司,浙江杭州310030

出　　处：《日用化学工业(中英文)》2025年第3期271-278,共8页China Surfactant Detergent & Cosmetics

基　　金：国家自然科学基金资助项目(21606107);赞宇科研基金(2024-9);江南大学本科教育教学改革研究项目(JG2023041)。

摘　　要：采用Pickering乳液模板法以亲水性二氨基硅烷和疏水性辛基硅烷制备Janus-SiO_(2)纳米颗粒,红外、热重、接触角和Zeta电位结果表明氨基硅烷和辛基硅烷分别成功接枝在SiO_(2)颗粒表面。以Janus-SiO_(2)颗粒稳定Pickering乳液,当均质强度为15000 r/min、Janus-SiO_(2)颗粒质量分数为1.0%、水油体积比5∶5时乳化效果最佳,液滴平均粒径约为56.6μm;且该Janus-SiO_(2)颗粒可制备高内相乳液并具有低能乳化及油相普适性。稳定性测试结果表明所制备的乳液可在室温下稳定两个月以上并且在4~90℃环境下保持稳定;在水相pH较低或较高以及高质量浓度NaCl下均可成乳,表明该乳液具有优异的耐酸碱性和耐电解质性,同时随着电解质质量浓度的增加乳液黏度有所增大。基于该Janus-SiO_(2)颗粒制备的O/W乳液具有良好的稳定性,在高温、高电解质条件下在油污清洗方面具有潜在应用。Janus-SiO_(2)nanoparticles were prepared by Pickering emulsion templating method by using 3-(2-aminoethylamino)propyltrimethoxysilane and n-octyl trimethoxysilane.The results of FT-IR,TG,contact angle and Zeta potential confirmed the successful grafting of amino groups and octyl groups onto the surface of SiO_(2)nanoparticles.Considering the emulsion droplet diameter and emulsification index,the optimal emulsification conditions were obtained at a homogenization intensity of 15000 r/min,Janus-SiO_(2)nanoparticle mass fraction of 1.0%,and water-to-oil volume ratio of 5∶5.The average droplet diameter of the Pickering emulsion thus obtained was approximately 56.6μm.The Janus-SiO_(2)nanoparticles exhibited good emulsification performance,which could stabilize high internal phase emulsion and have low-energy emulsification and broad oil phase universality.The results of stability test demonstrated that the Pickering emulsion prepared remained stable at room temperature for more than two months and maintained stability in the temperature range of 4 to 90℃.The Pickering emulsion could be formed even when the aqueous phase had low or high pH or high mass concentrations of NaCl,indicative of excellent resistance to acid,base and electrolyte.In addition,the viscosity of the emulsion increased with increasing electrolyte mass concentration.The O/W Pickering emulsion stabilized with Janus-SiO_(2)particles exhibited remarkable stability,which had potential for applications in cleaning of oil stains under high-temperature and high-electrolyte conditions.

关 键 词：Janus-SiO_(2)颗粒 Pickering乳液 高稳定性 耐酸碱性 耐电解质性 

分 类 号：O648.23[理学—物理化学]