2-polybutadiene (MAPB) was melt grafted onto polypropylene (PP) in the presence of dicumyl peroxide (DCP). The MAPB-
g
-PP were characterized by means of Fourier transformed infrared spectroscopy (FTIR)
differential scanning calorimeter (DSC) and thermogravimetry (TG). Then the MAPB-
g
-PP was applied as interfacial compatibilizer in wood plastic composites (WPC) to evaluate the technical formula via the mechanical properties of WPC. The results demonstrated that MAPB could be grafted onto PP
the crystallization temperature and thermostability were increased. The MAPB-
g
-PP prepared at 180℃ with MAPB:PP:DCP mass ratio of 13:37:0. 2 showed the best effect on the mechanical properties of WPC.