双重pH响应型皮克林乳液。
Doubly pH-responsive pickering emulsion.
作者信息
Li Jian, Stöver Harald D H
机构信息
Department of Chemistry, McMaster University, Hamilton, ON, Canada L8S 4M1.
出版信息
Langmuir. 2008 Dec 2;24(23):13237-40. doi: 10.1021/la802619m.
A pH-responsive Pickering emulsion has been designed on the basis of commercially available alumina-coated silica nanoparticles (Ludox CL silica particles) and potassium hydrogen phthalate (KHP). KHP was found to bind to cationic particle surfaces at pH values between 3.5 and 5.5, enabling the resulting surface-active particles to stabilize emulsions of xylenes in water. Above and below this pH range, the system demulsifies, resulting in a reversible Pickering emulsifier having two pH-controlled, reversible transitions.
基于市售的氧化铝包覆二氧化硅纳米颗粒（Ludox CL 二氧化硅颗粒）和邻苯二甲酸氢钾（KHP）设计了一种 pH 响应型 Pickering 乳液。发现 KHP 在 3.5 至 5.5 的 pH 值范围内与阳离子颗粒表面结合，使所得的表面活性颗粒能够稳定二甲苯在水中的乳液。在该 pH 范围之上和之下，体系会破乳，从而产生一种具有两个 pH 控制的可逆转变的可逆 Pickering乳化剂。
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