Abstract: The bamboo flour (BF)were treated with different modifiers, and bamboo flour/polypropylene(BF/PP)composites were prepared via melt extrusion process.The micro-structure and properties of BF were analyzed by TG/DTA, FTIR, XRD and AFM.The results show that surface treatment improves the heat resistance and specific surface area of BF, and some looser fiber bundles are formed as well.The SEM images of the fractured surface of BF/PP composites indicate that treatment of BF with KH-550 efficiently improves the interfacial adhesion between BF and PP resins that leads to the enhancement of impact strength of the composite increased by 83% compared with that of pure PP.

Key words: polypropylene;bamboo flour;surface modification;mechanical property