Polybutadiene-poly(methyl methacrylate) core-shell latexes studied by high-resolution solid-state 13C NMR and DSC: Influence of the surface coverage of the polybutadiene seed latex and the latex composition on the interphase formation
✍ Scribed by Denis Tembou Nzudie; Luc Delmotte; Gérard Riess
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 714 KB
- Volume
- 195
- Category
- Article
- ISSN
- 1022-1352
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✦ Synopsis
Abstract
High‐resolution solid‐state ^13^C 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 (T~1ρ~(H)), glass transition temperature (T~g~) and transition zone (Δ__T__~g~), 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 interphase.