Preliminary study on application PE filler modified by radiation

Mineral filler magnesium oxide (MgO) has been modified by a grafting proces s initiated by electron beam treatment. The methacrylic acid (MAA), methyl methacrylate (MM) and maleic anhydride (MA) were used as modifying monomers . The products of performed modification has been investigated by FTIR, DSC and TG methods. Modified fillers have been used in compositions with polye thylene (LDPE). Structure of the samples has been investigated by the SEM m ethod. Mechanical properties of selected samples have been studied and disc ussed. The optimal results depends on dose level which is specific for cert ain monomers, ratio and type of monomers used and for grafting process. Thi s paper presents data released to influence the type of monomer on properti es of grafted filler. The obtained samples of filling polyethylene were cha racterized generally by better dispersibility and some mechanical propertie s. (C) 2000 Elsevier Science Ltd. All rights reserved.