Permeation and Diffusion
CT Associates, Inc. has developed techniques to measure permeation rates of acid gases (e.g. HCl and HF), solvents and oxidizers (e.g. O3) into and through polymers and polymer films.
These techniques have been used to measure the susceptibility of components, such as pumps and valves, to degradation by acid gas permeation. Models have been developed to predict the non-steady-state transport of gases and liquids through polymers and into liquids and to predict component lifetime as a function of acid concentration and temperature.
Permeation of nitrogen through 2 films and into a solvent. Relevant Publication
The effect of temperature and HCl concentrarion on HCl permeation rate through PFA. Relevant Publicaiton
The predicted effect of HCl concentration and temperature on component lifetime. Relevent Publicaiton