Abstract
Fractions of branched polyethylene were investigated by dynamic light scattering in 1,2,4-trichlorobenzene at 135 °C. The individual macromolecules and the microgel were separated by Laplace inversion of the autocorrelation functions. For branched polyethylene with σ=0.919 g/cm3 the relationship D 0=2.437·10−4 M −0.533w is valid. In semidilute solutions two further modes were observed. The diffusion coefficient of the first mode does not depend on the angle of observation, and the slope of the concentration dependence is −1.90.
The diffusion coefficient of the second mode depends on the angle of observation. The slope of the concentration dependence is −2.85. It seems to be a diffusion of clusters.
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© 1993 Dr. Dietrich Steinkopff Verlag GmbH & Co. KG
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Helmsted, M. (1993). Dynamic light scattering investigations on semidilute solutions of branched polyethylene. In: Ewen, B., Fischer, E.W., Fytas, G. (eds) Application of Scattering Methods to the Dynamics of Polymer Systems. Progress in Colloid & Polymer Science, vol 91. Steinkopff. https://doi.org/10.1007/BFb0116475
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DOI: https://doi.org/10.1007/BFb0116475
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