Abstract:
:A general solution of the diffusion equation for gas in polymers is developed by a numerical method. This solution allows diffusion to be calculated in all cases, by gas desorption after an incomplete adsorption, which is not the case for analytical solutions. When the analytical solutions are valid, both types of solution give identical results. The effect of equivalent sterilization treatment at different temperatures and gas concentrations on formaldehyde residuals in 9 polymers is calculated. High temperature gives lower residual content. Short sterilization times at high gas concentration produce a higher residual content at the end of the adsorption and a lower residual content during desorption than longer sterilization times with lower gas concentration. This is due to sharper gradients of diffusant in the polymer.
journal_name
Biomaterialsjournal_title
Biomaterialsauthors
Hennebert Pdoi
10.1016/0142-9612(87)90004-4subject
Has Abstractpub_date
1987-09-01 00:00:00pages
346-52issue
5eissn
0142-9612issn
1878-5905pii
0142-9612(87)90004-4journal_volume
8pub_type
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