Gamma radiation of PTFE

Aug 02, 2003 2 Replies
N

I know that PTFE does not withstand gamma radiation. There are a lot of sources or handbooks that mention that. However, I am hard-pressed to find the quantitative effect that gamma radiation has on PTFE properties. Like, what does it do to the modulus, or elasticity, or mol wt, etc. I am interested in approx. 25 to 30 kGy radiation effect---but a barcketing effect study (at the high and low end) would be more useful.



Thanks for your help!



Nilesh P.S. I am looking to find what gamma sterilization exactly does to PTFE, in terms of impacting its phycial/chemcial properties.


Vote
Twitter Facebook LinkedIn
R

PTFE decomposes by electron or gamma radiation in presence of oxygen generating carbonyl fluoride and carboxylic acid groups. The following = documents talk about some of the inflicted changes in mechanical properties:

formatting link
PTFE can be sterilized with ethylene-oxide, Formalin or steam.
formatting link
FEP and ETFE resins withstand varying degrees of gamma radiation better.
formatting link
"N. Ron" schrieb im Newsbeitrag = news:bghebh$je3$ snipped-for-privacy@bob.news.rcn.net...

Vote
Twitter Facebook LinkedIn
B

Hallo, Have you had a look at the book, "The effect of sterilization methods on plastics and elastomers", Plastics Design Library, 1994. ISBN

1-884207-10-3 Library of C> > I know that PTFE does not withstand gamma radiation. There are a lot > of
Vote
Twitter Facebook LinkedIn

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required