Preparation and Properties of Compatibilized Poly(Butylenesadipate-Co-Terephalate)/Thermoplastic Starch Blends

Abstract

Poly (butylenesadipate-co-terephalate) (PBAT) was modified by melt grafting glycidyl methacrylate (GMA) in the presence of benzoyl peroxide (BPO) in a Haake mixer; and the various properties of blends of PBAT/thermoplastic starch (TPS) using GMA-grafted PBAT (PBAT-g-GMA) as compatibilizer were investigated. The blends comprising TPS content ranged from 20wt% to 50wt%. Thermal properties and thermal stability were characterized with DSC and TGA, respectively. The morphologic results indicated that the interfacial adhesion of PBAT/TPS blends was improved by PBAT-g-GMA. In comparison with the uncompatibilized blends, the tensile properties of compatibilized blends were significantly enhanced, particularly at a high content of TPS (i.e., 40wt% and 50wt%).

Recent Progress in Modification and Preparations of the Promising Biodegradable Plastics: Polylactide and Poly(butylene adipate-co-terephthalate)

“…M. Xiao et al prepared PBAT-g-GMA copolymer by melt grafting GMA using BPO as the initiator. PBAT-g-GMA copolymers were used as a compatibilizer for PBAT/thermoplastic starch (TPS) blends by melt mixing [207]. D. Niu et al prepared PGA/PBAT/EMAG blends in two ways.…”