Dependence of viscosity of polystyrene solutions on molecular weight and concentration

✍ Scribed by B.T. Poh; B.T. Ong

• Publisher: Elsevier Science
• Year: 1984
• Tongue: English
• Weight: 290 KB
• Volume: 20
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(84)90080-6

✦ Synopsis

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 x 103 to 2.4 x 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.