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Effect of Electron Beam Irradiation and Ethylene Vinyl Acetate Copolymer on the Properties of NBR/HDPE Blends
Authors:Nawal A. Shaltout
Affiliation:Radiation Chemistry Department , National Center for Radiation Research and Technology, AEA , P.O. Box 29, Telex.: 21830 NCRRT UN, Nasr City , Cairo
Abstract:The mechanical and physical properties of blends based essentially on nitrile butadiene rubber (NBR) and different ratios of high density polyethylene (HDPE) up to 25 parts per hundred part of rubber (phr) before and after electron beam irradiation were investigated. The values of tensile strength (TS), tensile modulus at 50% elongation (M50), hardness and gel fraction % (GF%) of NBR/HDPE blends were increased with both irradiation dose and by increasing the content of HDPE in the blends. On the other hand, the values of elongation at break (E b ) were decreased with both irradiation dose and the content of HDPE in the blends. By loading NBR/HDPE (100/25) blend with ethylene vinyl acetate (EVA) copolymer the mechanical and physico-chemical properties were improved. Moreover, the degree of improvement is proportional to the loading content of EVA.
Keywords:NBR/HDPE blends  electron beam irradiation  ethylene vinyl acetate  mechanical properties  physico-chemical properties
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