Preparation and Characterization of Graft Copolymer EVA-g-PU

摘要

Via melting graft reaction,a new type of graft copolymer EVA-g-PU was synthesized.The characterization of Fourier transform infrared and ~(13)C-nucIear magnetic resonance indicated that the polyether-polyurethane prepolymer was grafted on the EVA main chain successfully.Differential scanning calorimetry testing showed that the melting temperature increased with the increase of PU prepolymer content.The enhanced storage modulus of EVA-g-PU was characterized by dynamic mechanical thermal analysis.The enhanced degree in the storage modulus of EVA-g-PU increased with the increase of PU prepolymer content.Thermal gravimetric analysis testing showed that thermal stabilities of EVA-g-PU increased with the increase of PU prepolymer content.