| Titre : | Solubility and diffusivity of carbon dioxide in solid-state isotactic polypropylene by the pressure−decay method (2009) |
| Auteurs : | Da-chao Li, Auteur ; Tao Liu, Auteur ; Ling Zhao, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 48 N° 15, Août 2009) |
| Article en page(s) : | pp. 7117–7124 |
| Note générale : | Chemical engineering |
| Langues : | Anglais |
| Tags : | Carbon dioxide Solid-state isotactic polypropylene Pressure− ; decay method |
| Résumé : | The solubility and diffusivity of carbon dioxide (CO2) in the solid-state isotactic polypropylene (iPP) were studied by using the pressure−decay method at temperatures of 373.15, 398.15, and 423.15 K and pressures ranging from 1 to 15 MPa. The solubilities of CO2 in the solid-state and amorphous regions of iPP were both obtained. They increased almost linearly with increasing pressure and decreased with increasing temperature. The Sanchez−Lacombe equation of state (S-L EOS) correlated the solubility in the amorphous regions of the solid-state iPP within 3% average relative deviation in conjunction with a temperature-dependent interaction parameter. The diffusion coefficient of CO2 in the solid-state iPP showed a weak concentration dependence and had an order of magnitude of 10−10−10−9 m2/s in the solid-state iPP. |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie8019483 |
