%0 Journal Article %T Investigation of parameters effecting oxygen gas permeation properties of polypropylene part-A; application of arrhenius equation to oxygen transmission rate (OTR) of polypropylene and clay nanocomposites %A ATAYEV, P. %A ÖNER, M. %J Sigma Journal of Engineering and Natural Sciences %D 2013 %V 31 %P 73-83 %R