grafting degree

In this study, functionalization of low-molecular-weight polyethylene by melt grafting of maleic anhydride was investigated. The results reveal that initiator concentration, reaction time and temperature have the greatest influence on the graft degree. Structure of maleic anhydride grafted low-molecular-weight po-lyethylene was proven by FTIR, DTA and XRD me-thods. The grafted low-molecular-weight polyethylene has a potential application as a compatibilizer for mate-rials based on polyethylene compounds.

The regularities of obtaining of osteoplastic porous composites based on 2-hydroxyethyl methacrylate with polyvinylpyrrolidone copolymers in the presence of mineral fillers (hydroxyapatite, montmorillonite and wollastonite) under ultrasound are researched. The influence of ultrasound, nature and amount of inorganic filler on the polymerization rate, copolymers composition and composites porosity has been determined. It was found that homopolymerization of 2-hydroxyethyl methacrylate without filler under ultrasound action does not occur in experiment conditions.