Kinetics of critical fluctuations in ternary polymer solutions
โ Scribed by Benmouna, Mustapha ;Fischer, Erhard W. ;Seils, Joachim ;Vilgis, Thomas A.
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1993
- Weight
- 531 KB
- Volume
- 2
- Category
- Article
- ISSN
- 1018-5054
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โฆ Synopsis
Abstract
The time evolution of the static structure factor following a sudden temperature jump ฮ__T__ is investigated in the case of a symmetric mixture of two polymers and a solvent in the optical theta conditions. The two reverse processes corresponding to ฮ__T__ > 0 and ฮ__T__ < 0 are considered, and the kinetics of approach towards the final states are investigated both in the Rouse limit and in the presence of hydrodynamic interactions.
๐ SIMILAR VOLUMES
Simulations based on Cahn-Hilliard spinodal decomposition theory for phase separation in thermally quenched polymer/solvent/nonsolvent systems are presented. Two common membrane-forming systems are studied, cellulose acetate [CA]/ acetone/water, and poly(ethersulfone) [PES]/dimethylsulfoxide [DMSO]/
Light-scattering measurements and spinodal decomposition modeling have been used to quantify the kinetics of pore growth in thermally quenched polymersolvent-nonsolvent [poly(methyl methacrylate) (PMMA)/1-methyl-2-pyrrolidinone (NMP)/glycerin] solutions. Solutions of fixed composition were quenched