%0 Journal Article
%T Changes in mechanical properties due to gamma irradiation of high-density polyethylene (HDPE)
%A Cota
%A S. S.
%A Vasconcelos
%A V.
%A Senne Jr.
%A M.
%A Carvalho
%A L. L.
%A Rezende
%A D. B.
%A C£¿rrea
%A R. F.
%J Brazilian Journal of Chemical Engineering
%D 2007
%I Brazilian Society of Chemical Engineering
%R 10.1590/S0104-66322007000200010
%X this paper presents an experimental analysis of the effect of dose and dose rate parameters during gamma irradiation of high-density polyethylene (hdpe) samples. considerations concerning the influence of these parameters on hdpe mechanical strength properties as a result of the predominance of oxidative degradation or of cross-linking are presented. the experimental results show an improvement of hdpe mechanical strength as dose increases, indicating the predominance of cross-linking over oxidative degradation and that lower doses are necessary to obtain a similar change in resistance parameters when radiation is applied at lower dose rates, showing that gamma radiation affects the hdpe in a more efficient way at lower dose rates.
%K gamma irradiation
%K polymers
%K mechanical properties.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0104-66322007000200010&lng=en&nrm=iso&tlng=en