Polybutadiene‐poly(methyl methacrylate) core‐shell latexes studied by high‐resolution solid‐state13C NMR and DSC: Influence of the surface coverage of the polybutadiene seed latex and the latex composition on the interphase formation

摘要

AbstractHigh‐resolution solid‐state13C NMR and differential scanning calorimetry (DSC) were used to examine the effect of the surface coverage of the polybutadiene seed latex by the surfactant and the latex composition on the interphase of PBut‐PMMA core‐shell latexes. On the basis of the determination of the relaxation time (T1ρ(H)), glass transition temperature (Tg) and transition zone (ΔTg), information on the interphase was obtained, such as the fraction of the PMMA in the interphase and the interphase thickness. An optimum surface coverage of the PBut seed latex particles was found to lead to the largest amount of i