Integral sorption in rubbery polymers
β Scribed by J. S. Vrentas; C. M. Vrentas
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 163 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0887-6266
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β¦ Synopsis
Simple equations are derived that describe integral sorption and desorption experiments under conditions where moving boundary effects in polymer films and spheres can be large because of high solvent concentrations. General conclusions are formulated about the nature of sorption and desorption experiments for both rectangular and spherical geometries.
π SIMILAR VOLUMES
Permeability coefficients have been measured for CO, and CH, in polyethylene membranes at 20, 30, and 40Β°C and at applied gas pressures up to ca. 2 MPa and for CH, in three kinds of rubber films at 25, 30, and 35OC and at applied gas pressures up to ca. 2.4 MPa. The pressure dependence of the logari
The Flory-Huggins interaction parameters x for 23 gases (He, Ne, Ar, Kr, Xe, H 2 , N 2 , O 2 , N 2 O, CO 2 , CH 4 , C 2 H 4 , C 2 H 6 , C 3 H 6 , C 3 H 8 , 1,3-C 4 H 6 , four C 4 H 8 's, n-C 4 H 10 , iso-C 4 H 10 , and n-C 5 H 12 ) in five rubbery polymers (1,2-polybutadiene (PB), poly(ethylene-co-v
Anomalous sorption curves have often been observed for differential sorption experiments in glassy polymers. A model is proposed to describe this non-Fickian behavior. This model is based on the presence of interfacial resistance caused by slow rate processes at the phase boundary. Predictions of th
The conventional wisdom is that concentration dependence of the rubbery plateau modulus of polymer solutions is independent of the material. However, in industrial practice, sometimes a small addition of miscible liquid lowers the modulus signiΓcantly whilst at other times it hardly a β ects it. This