Abstract
An investigation of the radial structure of composite latex particles by small-angle x-ray scattering (SAXS) is given. Measurements at different contrasts were done by addition of sucrose to the dispersion medium water. The latex particles investigated here consist of a poly(styrene) core and a shell of poly(methylmethacrylate) and were prepared by seeded emulsion polymerization. Since the electron density of both polymers can be easily matched by concentrated sucrose solution, a full analysis of the radial electron density by contrast variation can be given. Depending on the mode of monomer addition during the second polymerization step a very sharp or a diffuse interface between the two incompatible polymers may result.
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Respectfully dedicated to Prof. E. W. Fischer on the occasion of his 65th birthday
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Dingenouts, N., Kim, Y.S. & Ballauff, M. The interface between immiscible polymers in composite latexes: a small-angle x-ray scattering study employing contrast variation. Colloid Polym Sci 272, 1380–1387 (1994). https://doi.org/10.1007/BF00654168
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DOI: https://doi.org/10.1007/BF00654168