![](/assets/images/picto-drapeau-france-3a76576a5d60a512053b4612ab58dae5.png)
1. Material permeability
1.1 Theory
At a given temperature, the transport of a gas molecule through a homogeneous (non-porous) membrane can be described as a 3-step process (if we neglect the formation of boundary layers):
condensation and solution of the penetrant on the face corresponding to the highest partial pressure of the gas in question (upstream face);
gas diffusion through the polymer membrane, due to the concentration gradient (chemical potential);
evaporation on the downstream side.
Thus, the permeability P to the gas under consideration is the product of a kinetic parameter, the diffusion coefficient D (m 2 ...
Exclusive to subscribers. 97% yet to be discovered!
You do not have access to this resource.
Click here to request your free trial access!
Already subscribed? Log in!
![](/assets/images/logo-eti-286623ed91fa802ce039246e516e5852.png)
The Ultimate Scientific and Technical Reference
This article is included in
Plastics and composites
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Material permeability
References
Manufacturers - Constructors
(non-exhaustive list)
Compatibilizers
Kuraray about SEPTON Ò http://septon.info/en/septon/list/pmc.htmlhttp://www.kuraray.de/division4/septon.html
...
Exclusive to subscribers. 97% yet to be discovered!
You do not have access to this resource.
Click here to request your free trial access!
Already subscribed? Log in!
![](/assets/images/logo-eti-286623ed91fa802ce039246e516e5852.png)
The Ultimate Scientific and Technical Reference