Abstract: EVA was employed to modify the surface of wood-flour in order to improve its compatibility with polyolefin. the diffuse reflectance spectroscopy, thermo-gravimetric analysis, and SEM were used to examine the changes of surface groups, thermal stability, and surface morphology of wood-flour, respectively. EVA prevented the adsorption of water from air, reduced the polarity of wood-flour. Termal stability of treated wood-flour was enhanced by the modification of EVA.SEM showed that when the EVA mass content was 15 wt，the wood-flour was completely encapsulated.

Key words: ethylene-vinyl acetate copolymer, wood-flour, surface modification