Microheterogeneities of core-shell latexes probed by 1H spin diffusion and transmission electron microscopy

✍ Scribed by Stefan Spiegel; Katharina Landfester; Günter Lieser; Christine Boeffel; Hans Wolfgang Spiess; Norbert Eidam

• Book ID: 102940361
• Publisher: John Wiley and Sons
• Year: 1995
• Tongue: English
• Weight: 592 KB
• Volume: 196
• Category: Article
• ISSN: 1022-1352
• DOI: 10.1002/macp.1995.021960401

✦ Synopsis

A core-shell latex built up of polybutadiene as a mobile component and polystyrene as a rigid component is investigated. Solid-state NMR spectroscopy and transmission electron microscopy are used to characterize the morphology and possible heterogeneities of the latex particles (average particles sizes 70-100 nm). NMR spectroscopy allows the determination of average domain distances much below the particle size due to standard electron microscopy. These differences are explained by an additional microstructure of the core-shell particles. Indeed, electron micrographs at high resolution confirm the existence of heterogeneities within the polybutadiene core of the latex. The presented investigations demonstrate the power of a combined application of solid-state NMR spectroscopy and transmission electron microscopy for the characterization of core-shell latexes.