Abstract: PHB/PP and PHB/PP/lignophenol composite films were prepared by blend casting. The effect of polypropylene fiber and lignophenol on the mechanical and thermal properties was studied. When polypropylene fiber content was 8 % and lignophenol content was 3 %, the overall property of PHB/PP/lignophenol composite film was the optimal. The polypropylene fiber and lignophenol were beneficial to tensile strength and thermal properties, respectively.

Key words: polypropylene fiber, poly(3-hydroxybutyrate), lignophenol, composite membrane , blending