Theory of Transient Permeation Through Reactive Barrier Films II. Two Layer Reactive-passive Structures with Dynamic Interface

The theory of transient permeation through homogeneous and structures incorporating non-catalytic solute scavenger is developed in Part II. It is based on the authors' earlier analytical solutions for the steady state model of permeation through passive films and reactive films with immobile ca...

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Bibliographic Details
Published in:International journal of polymeric materials 2005-02, Vol.54 (2), p.93-115
Main Authors: Solovyov, Stanislav E., Goldman, Anatoliy Ya
Format: Article
Language:English
Subjects:
active barrier
Applied sciences
Exact sciences and technology
exhaustion time
Forms of application and semi-finished materials
ingress
layer sequence
moving interface
multilayer
oxygen scavenger
Polymer industry, paints, wood
Sheets and films
Technology of polymers
transient transmission rate
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Summary:The theory of transient permeation through homogeneous and structures incorporating non-catalytic solute scavenger is developed in Part II. It is based on the authors' earlier analytical solutions for the steady state model of permeation through passive films and reactive films with immobile catalytic scavenger dispersed within the layer. For consumable scavengers, the steady-unsteady solution matching method is introduced to describe scavenger consumption dynamics as a moving interface between reactive and passive layers of the film. The scavenger exhaustion time equation is derived in the approximation of fast reaction but it is shown to be also valid for intermediate reaction rates. The transient transmission rate dependence on time, boundary conditions, reactivity and reactive capacity of the scavenger, and layer sequence is derived. The terminology, notation, and section numbering continue from Part I of this series [1] .
ISSN:0091-4037
1563-535X
DOI:10.1080/00914030390224346