Posted by Diffusion Platform on November 23, 2003 at 18:04:36:

In Reply to: diffusion of hexane through polypropylene (PP) posted by Jim Roberts on November 03, 2003 at 21:55:51:
 

Dear Jim,

As the diffusivity is concentration dependent we  provide you with a weighted average diffusion coefficient for the concentration range of 100% liquid n-hexane in polypropylene. This diffusion coefficient is only applicable for stationary permeation calculations and for polyproplylene . The weighted average diffusion coefficient of n-hexane in polypropylene is 1E-12 m2/s at 23 degrees Celsius and 1 bar system pressure. When you require support with n-hexane or other organic solvents in vapour phase and/or instationary permeation or another special application, we invite you to contact us via inquiry@composite-agency.com. Thanks.

Yours sincerely,
Diffusion-polymers.com