Rheological analysis of irradiated crosslinkable and scissionable polymers used for medical devices under different radiation conditions
- Satti, Angel Jose
- Ressia, Jorge Aníbal
- Cerrada, M. L.
- Andreucetti, Noemi Amalia
- Valles, Enrique Marcelo
DOIAbstract
The effects on different synthetic polymers of distinct types of radiation, gamma rays and electron beam, under different atmospheres are followed by changes in their viscoelastic behavior. Taking into account the two main radioinduced reactions, crosslinking and scissioning of polymeric chains, liquid polydimethylsiloxane has been used as example of crosslinkable polymer and semi crystalline polypropylene as example of scissionable polymer. Propylene − 1-hexene copolymers have been also evaluated, and the effects of both reactions were clearly noticed. Accordingly, samples of those aforementioned polymers have been irradiated with 60Co gamma irradiation in air and under vacuum, and also with electron beam, at similar doses. Sinusoidal dyna...
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