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Ammonia RF-Plasma Treatment of Tubular ePTFE Vascular Prostheses : A Preliminary Study

Published online by Cambridge University Press:  10 February 2011

D. Mantovanil ,
M. Castonguay ,
J. F. Pageaul ,
M. Fiset  and
G. Laroche
D. Mantovanil
Affiliation:
Quebec Biomaterials Institute Department of Metallurgy, Laval University, Quebec City, Quebec, GIL 3L5, Canada, [email protected]
M. Castonguay
Affiliation:
Quebec Biomaterials Institute
J. F. Pageaul
Affiliation:
Quebec Biomaterials Institute
M. Fiset
Affiliation:
Department of Metallurgy, Laval University, Quebec City, Quebec, GIL 3L5, Canada, [email protected]
G. Laroche
Affiliation:
Quebec Biomaterials Institute
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Abstract

A cylindrically-configured plasma treatment system in Radio Frequency Glow Discharges fed with ammonia was used to modify the internal surface of ePTFE arterial prostheses. The effects of RF-power on the surface chemical composition were characterized by XPS. Results show that the treatment at 20 W, for 250 seconds and under an ammonia pressure of 300 mtorr yielded a good compromise between ablation and substitution phenomena on the surface. With this treatment, fluorine content was decreased, while up to 20 % of the surface atoms were substituted by nitrogen.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 544: Symposium Y – Plasma Deposition and Treatment of Polymers , 1998 , 21
Copyright
Copyright © Materials Research Society 1999

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