Title :
Modeling shelf and accelerated aging of ultra-high molecular weight polyethylene in air
Author :
Medhekar, V.S. ; Thompson, R.W. ; Wang, A. ; McGimpsey, W.G.
Abstract :
The study attempts to mathematically model URMWPE oxidation in air. Simulations were carried out for shelf aging and accelerated aging data. Simulations of shelf aging at reduced oxygen concentration results in the ketone subsurface shifting towards the surface. Simulations of shelf aging at higher irradiation dose predicted higher ketone concentration with the peak shifting to the left. Reduced irradiation dose predicted significant reduction of the ketone formation
Keywords :
free radical reactions; gamma-ray effects; modelling; oxidation; polymers; O2; URMWPE oxidation in air; accelerated aging; ketone formation reduction; ketone subsurface shifting; reduced irradiation dose; reduced oxygen concentration; shelf aging; ultra-high molecular weight polyethylene; Accelerated aging; Acceleration; Atmospheric modeling; Chemical engineering; Chemistry; Crystallization; Degradation; Mathematical model; Oxidation; Polyethylene;
Conference_Titel :
Bioengineering Conference, 2002. Proceedings of the IEEE 28th Annual Northeast
Conference_Location :
Philadelphia, PA
Print_ISBN :
0-7803-7419-3
DOI :
10.1109/NEBC.2002.999471
