الفهرس 
Classification of polymer blendsOnly 14 pages are availabe for public view
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Abstract
As polymeric materials do not decompose easily, disposal its is a serious environmental problem. The large number of waste tires has become a significant problem with the increase in the number of automobiles each year. Landfill is one of the early ways to dispose discarded rubber products; nevertheless, with decreasing available sites and cost increase, landfill is rapidly being discarded. One way of utilizing waste rubber tires is to recycle them. Materials presenting good properties can be obtained from waste rubber and plastic residues of discarded materials found in urban waste. These materials are basically ground tire rubber (GTR), low density polyethylene ( LDPE), high density polyethylene (HDPE); and polyvinyl chloride (PVC) Therefore, blends of these low cost materials present in polymeric waste are of particular interest. The waste GTR could be utilized as filler and blended with other polymeric materials to obtain a range of properties .Blends of GTR with different polymers have been prepared and in some cases the effect of ionizing radiation has also been studied This work aims at studying the effect of gamma radiation on polymeric blends based on ethylene propylene diene monomer ( EPDM) rubber and styrene butadiene rubber (SBR). The blend EPDM/SBR (50/50) is loaded first with waste materials such as waste high density polyethylene (WPE ) or ground tire rubber (GTR) as an additive. Different properties of filled blends are followed up, specifically , mechanical, physical, thermal and morphogical ones. In order to increase the efficiency of irradiation curing of such blends , it may be required to add suitable additives of different functional characters such as glycidyl methacrylate (GMA) as compatibilizer, N,N methylene diacrylamide (MDA) as coagent and HAF- carbon black, Hisil or organo-clay as reinforcing fillers that may increase the extent of crosslinking at the same irradiation dose .