Institute of Particle Science and Engineering School of Process, Environmental and Materials Engineering, University of Leeds, Leeds, United Kingdom.
Langmuir. 2012 Mar 20;28(11):5085-92. doi: 10.1021/la2048568. Epub 2012 Mar 12.
In this article, the adsorption of latex core-responsive polymer-shell nanoparticles at the air-water interface is investigated using a Langmuir trough. Phase transition isotherms are used to explore their responsive behavior at the interface as a function of changes in the pH of the subphase. By adjusting the pH of the water prior to particle deposition, we probe the effect of the stabilizing polymer wetting by the water subphase on the stability of these particles at the air-water interface. In addition, by initially compressing a stable film of adsorbed particles and then subsequently changing the pH of the subphase we study desorption of these particles into the water phase.
本文采用 Langmuir 槽研究了乳胶核响应型聚合物壳纳米粒子在气液界面的吸附。通过相转变等温线研究了它们在界面上的响应行为，作为亚相 pH 值变化的函数。通过在粒子沉积前调节水的 pH 值，我们探测了稳定聚合物在水亚相中的润湿性对这些粒子在气液界面稳定性的影响。此外，我们最初压缩吸附粒子的稳定膜，然后改变亚相的 pH 值，研究这些粒子在水中的解吸情况。
