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Aging glassy polymer transport

Pfromm, P. H., and Koros, W. J., Accelerated physical aging of thin glassy polymer-fihns evidence from gas-transport measurements, Polymer, 36, 2379-2387 (1995). [Pg.221]

Transport Properties. Sorption and transport properties are highly dependent on the post-vitrification history of glassy polymers (77) hence one would expect parameters such as physical aging, antiplasticization and amorphous orientation to affect transport properties. The reduction in diffusivity and permeability due to aging, orientation, and antiplasticization can be modeled via entropy or fi ee volume arguments (77). In addition, diffusive jumps of penetrant molecules in glassy polymers can be affected by (facilitated by) the segmental mobility that is manifested in sub-Tg relaxations 78),... [Pg.14]

Pfiomm, P.H., Koios, W.J. Accelerated physical aging of thin glassy polymer films Evidence from gas transport measuiments. Polymer 36, 2379 (1995)... [Pg.82]

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See also in sourсe #XX -- [ Pg.2 , Pg.1334 , Pg.1335 ]



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