Consistent data have been obtained from measurements of the thermodynamic stability limit (spinodal locus) and of the critical point in the system polystyrene/cyclohexane by Pulse-Induced Critical Scattering and phase-volume-ratio techniques which involve direct measurement of the second and third d
Liquid-Liquid Phase Separation in Multicomponent Polymer Systems. X. Concentration Dependence of the Pair-Interaction Parameter in the System Cyclohexane-Polystyrene
β Scribed by Koningsveld, R.; Kleintjens, L. A.
- Book ID
- 121302234
- Publisher
- American Chemical Society
- Year
- 1971
- Tongue
- English
- Weight
- 529 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0024-9297
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π SIMILAR VOLUMES
It is demonstrated that estimation of the pair-interaction function from polymer-blend cloud points cannot yield meaningful values if data are restricted to a single blend. Additional information is required, such as cloud points in another blend made up of samples of the same two polymers di β ering
Equations are derived for (dT/dq~)p and (dp/dgp)r along the cloud-point curves of solutions of heterogeneous polymers in a single solvent. It is shown that the extreme of the cloud-point curve (the precipitation threshold) can be calculated using these equations, The results of some model calculatio