Volumetric properties of block and random copolymers of butadiene and styrene at pressures to 1 kilobar
Article first published online: 9 MAR 2003
Copyright © 1977 John Wiley & Sons, Inc.
Journal of Applied Polymer Science
Volume 21, Issue 11, pages 2867–2872, November 1977
How to Cite
Renuncio, J. A. R. and Prausnitz, J. M. (1977), Volumetric properties of block and random copolymers of butadiene and styrene at pressures to 1 kilobar. J. Appl. Polym. Sci., 21: 2867–2872. doi: 10.1002/app.1977.070211101
- Issue published online: 9 MAR 2003
- Article first published online: 9 MAR 2003
- Manuscript Revised: 18 AUG 1976
- Manuscript Received: 23 JAN 1976
Densities of thermally annealed copolymers were measured at 75° and 100°C at pressures to 1 kilobar. The compositions ranged from pure polybutadiene to pure polystyrene, from completely random to completely block copolymers. The experimental results are well represented by the Tait equation. To a first approximation, specific volumes and compressibilities are linear functions of weight per cent styrene. For a fixed composition, the effect of structure on volumetric properties is small. However, it appears that, when compared at the same overall composition, the specific volume and compressibility are larger for the random copolymer; specific volume and compressibility decline slightly when the styrene is in block rather than random form.