Solution properties and unperturbed dimensions of poly(p-tert-butylstyrene)

✍ Scribed by Zühal Küçükyavuz; Savaş Küçükyavuz

• Publisher: Elsevier Science
• Year: 1978
• Tongue: English
• Weight: 376 KB
• Volume: 14
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(78)90188-x

✦ Synopsis

The conformational and thermodynamic properties of poly(p-tert-butylstyrene) were investigated by osmometry, intrinsic viscosity, light scattering, gel permeation chromatography and phase equilibria measurements. Polymeric samples were anionically synthesized. 1-Nitropropane was found to be a 0-solvent for this polymer and the 0-temperature was determined as 31°C. Intrinsic viscosity-molecular weight relationships were obtained in a few solvents. Unperturbed dimensions. estimated from both viscosity and light scattering results, led to the characteristic ratio, C:~, of 13.4 + 0.7 at 31°C. Comparison of this value with those for other polystyrene derivatives shows that the characteristic ratio increases with the bulkiness of the side-group due to the steric effect.