Quantitative Evaluation of Interfacial Affinity and Interaction between Fillers and Polymer Matrix on MMA Polymer Mortar

Abstract

Interfacial affinity and interaction between fillers and polymer matrix were investigated for improving the properties of MMA polymer concrete. The investigations were performed by both dynamic-mechanical approach and analysis of filler-polymer-solvents interactions by using Teas's triangular chart. Morishita's index and acid-base balance parameter were also analyzed to study the dispersion state and the surface characteristics of fillers. The results demonstrated that alumina having acidic surface provided strong adhesion and interaction for the MMA polymer matrix. By contrast, the fillers involvingCaO and SiO₂ as main chemical components had basic surface leading to repulsion against to the polymer matrix.