Abstract
One of the most useful methods for particle size determination of polymer dispersions, the quasielastic light scattering technique (QELS), was applied to determine the thickness of the layers of monodisperse poly(oxyethylene) adsorbed on the polystyrene latex surface. The molecular weights ranged from 2×104 to 130×104 g mol−1. On the basis of the experimental results for both adsorbance and thickness of an adsorbed polymer layer; the conformation of the adsorbed polymer is discussed. The hydrodynamic thickness of the adsorbed polymer layer is nearly equal to the dimensions of an isolated polymer in bulk solution. Adsorbance data indicate that the adsorbed polymers must considerably overlap one another or are laterally compressed. The molecular weight dependence of the adsorbed layer thickness is related to the excluded-volume effect of the polymer chain in bulk solution.
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Kato, T., Nakamura, K., Kawaguchi, M. et al. Quasielastic Light Scattering Measurements of Polystyrene Latices and Conformation of Poly(oxyethylene) Adsorbed on the Latices. Polym J 13, 1037–1043 (1981). https://doi.org/10.1295/polymj.13.1037
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DOI: https://doi.org/10.1295/polymj.13.1037
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