원문정보
초록
영어
Thermoplastic starch (TPS) is the bio-thermoplastic produced from the starch via thermo-plasticization process at high temperature in the presence of plasticizer, such as water and glycerol. Starch is applicable to thermoplastic processing unlike other polysaccharides. TPS has gained an interest as a next-generation biodegradable plastic because its low cost, easy supply, and high environmental value. However, the TPS has relatively low strength properties compared to other thermoplastic polymers. In this study, cellulose nanofibrils (CNFs) were used as a reinforced filler to improve the strength of TPS. The chemical composition of CNF was adjusted by partial delignification via Wise method and removal of hemicellulose via alkali-treatment. TPS/CNF composites were obtained by twin-screw extruding the mixture of starch/glycerol (75/25) and CNF. The effects of CNFs addition and chemical composition on morphological characteristics and tensile properties of TPS/CNF composites were investigated.