Posted by R. P. Danner on February 25, 2005 at 15:32:50:

In Reply to: Re: Difference in Diffusion through HDPE and LDPE posted by Diffusion-polymers.com on February 14, 2005 at 09:14:54:

See paper by Luzow et al., Diffusion of Toluene and n-Heptane in Polyethylenes of Different Crystallinity," Polymers, 40, 2797 (1999).

They discuss the differences in various types of polyethyelene in a rigorous manner.