Dependence of viscosity of polystyrene solutions on molecular weight and concentration |
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Authors: | BT Poh BT Ong |
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Institution: | Pusat Pengajian Sains Gunaan, Universiti Sains Malaysia, Minden, Penang, Malaysia |
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Abstract: | Viscosities of solutions of polystyrene in toluene were measured for concentrations up to 400 kg m?3 at 298 K. Polymers of molecular weights ranging from 8.7 × 103 to 2.4 × 106 were used. It is observed that viscosity of the polymer solution increases with increasing concentration and molecular weight; the rate of increase is greater at higher values of the two parameters. A master curve for the system is constructed by using the experimental data for viscosity, concentration and molecular weight of the polymer. Regions of various polymer interactions in solution are identified. |
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