화학공학소재연구정보센터
Macromolecules, Vol.52, No.14, 5357-5365, 2019
Modeling Intercolloidal Interactions Induced by Adsorption of Mobile Telechelic Polymers onto Particle Surfaces
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.