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Polybutadiene‐poly(methyl methacrylate) core‐shell latexes studied by high‐resolution solid‐state 13 C NMR and DSC: Influence of the surface coverage of the polybutadiene seed latex and the latex composition on the interphase formation
Author(s) -
Nzudie Denis Tembou,
Delmotte Luc,
Riess Gérard
Publication year - 1994
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1994.021950804
Subject(s) - polybutadiene , interphase , differential scanning calorimetry , glass transition , materials science , methyl methacrylate , polymer chemistry , relaxation (psychology) , poly(methyl methacrylate) , chemical engineering , analytical chemistry (journal) , copolymer , chemistry , composite material , polymer , chromatography , thermodynamics , psychology , social psychology , physics , biology , engineering , genetics
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.