China Plastics ›› 2008, Vol. 22 ›› Issue (07): 37-41 .DOI: 10.19491/j.issn.1001-9278.2008.07.007

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Study on Novel Graft Copolymer EVA-g-PU

HE Yu-xin,MA Jian-zhong,ZHANG Li,ZHANG Yu-qing   

  1. 1.College of Resource and Environment, Shanxi University of Science&Technology, Xi' an 710021,China;2. College of Chemical Engineering and Pharmaceutics, Henan University of Science&Technology, Luoyang 471003,China;3. Department of Chemistry, Luoyang Normal University, Luoyang 471022,China
  • Received:2008-02-06 Revised:1900-01-01 Online:2008-07-26 Published:2008-07-26

Abstract: A new type of graft copolymer EVA一g-PU was prepared;the grafting of polycthcr-polyurethane prepolymer onto EVA backbone was confirmed by FTIR and 13C-NMR characterization.Mechanical testing showed that the tensile strength and elongation at break of EVA一g-PU was far supcrior to neat EVA.Dynamic mechanical thermal analysis (DMA)showed that the storage modulus of EVA一g-PU increased with increasing PU prepolymer content. Thermal gravimetric analysis(TGA) testing showed that the introduction of PU prepolymer also increased the thermal stahilitics of EVA一g-PU copolymers.

Key words: ethylene-vinyl acetate copolymer, polyurethane prepolymer, graft copolymer