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Analysis of transient sorption and permeation of small molecules in multiphase polymer systems
Author(s) -
Ottino J. M.,
Shah N.
Publication year - 1984
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760240213
Subject(s) - permeation , sorption , materials science , polymer , thermal diffusivity , chemical engineering , permeability (electromagnetism) , molecule , transient (computer programming) , chemical physics , thermodynamics , composite material , organic chemistry , adsorption , computer science , chemistry , membrane , biochemistry , physics , engineering , operating system
The transport of small molecules (gases) in incompatible polymer blends, semi‐crystalline polymers, and filled polymer systems is usually examined in terms of transient sorption and permeation experiments which yield effective values of diffusivity and permeability. From a modeling standpoint these complex systems can be regarded as composites with complex morphology whereas the gas can be considered as a molecular probe of the morphology and especially its connectedness. In this paper we present a brief review of transport descriptions in prototype ordered and disordered systems with special emphasis on simulation of transient measurements. The simulations presented are selected in such a way as to aid in the interpretation of experimental results obtained by sorption and permeation and in the construction and evaluation of morphologies with desired effective transport properties.