Preparation and Characterization of TPS/PBAT/Tourmaline Biodegradable Composite Films

To improve the compatibility between starch and poly(butylene adipate- co-terephthalate) (PBAT), thermoplastic starch (TPS) was prepared via treatment starch with KH-560, and then the melt blended with PBAT to get degradable TPS/PBAT blend membranes. The compatibility and thermal stability of TPS/PBAT blend membranes were effective improved, and its water absorption was reduced. And the degradable TPS/PBAT/tourmaline composite materials that had the functions of negative ion releasing and far-infrared radiation were prepared by adjunction the surface organic modified tourmaline in the blend procedure of TPS and PBAT. The dispersion stability of tourmaline, negative ion releasing amounts, far-infrared emissivity and mechanical property of TPS/PBAT/tourmaline composite were characterized. The experimental results demonstrated that the TPS/PBAT/tourmaline functional composite materials had excellent negative ion releasing, far-infrared radiation and mechanical properties.