Premium
Diffusion and solution of gases in thermally softened or molten polymers: Part I. Development of technique and determination of data
Author(s) -
Durrill Preston L.,
Griskey Richard G.
Publication year - 1966
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690120619
Subject(s) - krypton , polypropylene , polymer , diffusion , polystyrene , helium , argon , thermodynamics , neon , polyethylene , thermal diffusivity , gaseous diffusion , chemistry , solubility , methane , carbon dioxide , nitrogen , polymer chemistry , materials science , analytical chemistry (journal) , organic chemistry , physics , electrode
Abstract A technique has been developed that determines simultaneously solubilities and diffusivities of gases in molten or thermally softened polymers. Henry's law was found to hold up to 20 atm. In addition it was found that pressure had no appreciable effect on diffusion coefficients up to 20 atm. Solubilities and diffusivities were determined for systems involving nitrogen, helium, carbon dioxide, and argon in polyethylene, polyisobutylene, and polypropylene. In addition, solubilities were also determined for the preceding gases in polystyrene and polymethylmethacrylate. Other data were also obtained for neon, krypton, and monochlorodiflouromethane in various polymers.