Abstract: Ammonium polyphosphate (APP), melamine (MA), starch, and glycerol were introduced into poly(butylene succinate) (PBS) forming a flame retardant composite. Influences on the combustion behavior and mechanical property of PBS were analyzed. The optimal properties of the composites were achieved when glycerin gelatinized starch was 20 %, the mass ratio of PBS and starch was 3∶1, flame retardant content was 24 %, and the mass ratio of APP and MA was 5∶1.

Key words: poly(butylenes succinate), starch, flame retardancy, blending modification