Radiation graft modification of ethylene-propylene rubber—I. Effect of monomer and substrate structure

✍ Scribed by V. Haddadi-Asl; R.P. Burford; J.L. Garneit

• Book ID: 103990546
• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 864 KB
• Volume: 44
• Category: Article
• ISSN: 0969-806X
• DOI: 10.1016/0969-806x(94)90077-9

✦ Synopsis

Radiation grafting of hydrophilic vinyl monomers onto ethylene-propylene elastomers (EPM rubbers) by the simultaneous method was studied. The present work centres upon gamma radiationinduced grafting of acrylamide (AAm), N-vinyl-2-pyrrolidone (NVP), 2-hydroxyethyl methacrylate (HEMA) and acrylonitrile (AN) onto four different EPM rubbers. Metal-based homopolymerisation inhibitors including Mohr's salt, Cu(NO,),

and FeSO, were evaluated and found to prevent homopolymerisation and significantly increase graft yield. Lithium nitrate was evaluated as a graft promoter. The effect of oxygen upon grafting was also studied. The role of the type of EPM rubber on grafting efficiency for a variety of monomers was investigated, to optimise grafting conditions for each EPM rubber and monomer. The properties of the resulting copolymers have been studied by SEM techniques.