Abstract
Comb-shaped polystyrenes having parent polymers of different molecular weights were prepared by an anionic polymerization method. A series of those samples have branches of a molecular weight lower than the critical value for entanglement. The samples were fractionated and characterized by osmotic pressure and light-scattering methods. The steady-flow viscosity, the steady-state compliance and other rheological parameters were calculated from the data of stress relaxation measurements of those samples. The effects of entanglement between parent polymers and of that between branches on the rheological properties are discussed from the molecular weight dependence of steady-flow viscosity, based on the theories of Bueche and Graessley.
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Fujimoto, T., Kajiura, H., Hirose, M. et al. Viscoelastic Properties of Comb-Shaped Polystyrenes Having Parent Polymers of Different Molecular Weights. Polym J 3, 181–188 (1972). https://doi.org/10.1295/polymj.3.181
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DOI: https://doi.org/10.1295/polymj.3.181
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