Modeling Intercolloidal Interactions Induced by Adsorption of Mobile Telechelic Polymers onto Particle Surfaces
Modeling Intercolloidal Interactions Induced by Adsorption of Mobile Telechelic Polymers onto Particle Surfaces
复制标题
模拟由移动遥爪聚合物吸附到颗粒表面引起的胶体间相互作用
作者：
Wenlin Zhang;Alyssa Travitz;R. Larson
我们结合联合收割机的自洽场理论和Derjaguin近似预测的聚合物诱导的胶体相互作用和不均匀分布的环和桥的遥爪聚合物吸附到颗粒表面时，聚合物被压缩或拉伸作为粒子间距离的函数。我们验证我们的方法，通过比较其预测的布朗动力学模拟。我们还确定了胶体间相互作用对粒径和表面覆盖率以及遥爪聚合物的分子结构的依赖性，包括链长和缺失的缔合末端，这是商业乳胶涂料设计中的重要参数。通过将预测的粒子间相互作用强度映射到巴克斯特温度，我们可以定量预测胶体和遥爪聚合物混合物的相行为。
We combine the self-consistent field theory and the Derjaguin approximation to predict the polymer-induced colloidal interactions and the nonuniform distributions of the loops and bridges of telechelic polymers adsorbed onto particle surfaces when the polymers are compressed or stretched as a function of interparticle distance. We validate our approach by comparing its predictions to those of Brownian dynamics simulations. We also determine the dependence of intercolloidal interactions on particle size and surface coverage as well as the molecular structures of telechelic polymers, including chain length and missing associating ends, which are important parameters in the design of commercial latex coatings. By mapping the predicted interparticle interaction strengths to Baxter temperatures, we can quantitatively predict the phase behaviors of the mixtures of colloids and telechelic polymers.
影响因子：
16.6
作者：
Chen, Hsieh;Fallah, Mohammad A.;Alexander-Katz, Alfredo
通讯作者：
Alexander-Katz, Alfredo