改性SiO_(2)皮克林粒子及其乳液稳定性的研究  

Preparation of Modified Silica Pickering Particles and Its Emulsifying Ability

作　　者：刘昊哲 叶美芳 LIU Hao-zhe;YE Mei-fang(School of Materials Science and Engineering,Hubei University,Wuhan 430062)

机构地区：[1]湖北大学材料科学与工程学院,武汉430062

出　　处：《胶体与聚合物》2023年第1期29-32,共4页Chinese Journal of Colloid & Polymer

摘　　要：SiO_(2)皮克林粒子在微胶囊中被广泛使用,但多采用单一改性SiO_(2)粒子稳定O/W型乳液。本文采用两种硅烷偶联剂,γ-缩水甘油醚氧丙酯三甲氧基硅烷(KH560)和γ-甲基丙烯酰氧丙基三甲氧基硅烷(KH570)修饰亲水SiO_(2)粒子表面,得到复合改性的SiO_(2)皮克林粒子(KH560-KH570-SiO_(2))。研究表明,相较于单一改性的KH560-SiO_(2),KH570-SiO_(2)和复合改性的KH560-KH570-SiO_(2)都具有很好的乳化稳定性,但复合改性的SiO_(2)皮克林粒子具有的环氧基团能够赋予微胶囊功能化。SiO_(2)Pickering particles are widely used in microcapsules,but the researchs mostly focus on using single-modified SiO_(2)particles to form O/W emulsion.Herein,two kinds of silane coupling agents,such as(3-Glycidyloxypropyl)trimethoxysilane(KH560)and 3-Trimethoxysilylpropyl methacrylate(KH570),were used to modify the surface of hydrophilic SiO_(2)nanoparticles to obtain multi-modified SiO_(2)Pickering particles(KH560-KH570-SiO_(2)).Compared with the single-modified KH560-SiO_(2),KH570-SiO_(2)and the multi-modified KH560-KH570-SiO_(2)have good emulsifying ability.Besides,the epoxy groups on the surface of KH560-KH570-SiO_(2)Pickering particles can endow microcapsules with functionality.

关 键 词：皮克林粒子 SiO_(2)粒子 复合改性 环氧树脂/水乳液 

分 类 号：O647.3[理学—物理化学]