TY - JOUR TI - 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 AU - ATAYEV, P. AU - ÖNER, M. JO - Sigma Journal of Engineering and Natural Sciences PY - 2013 VL - 31 SP - 73 EP - 83 DO - ER -