| 초록 |
In this paper, we report on the physical properties of films that have been synthesized by using native corn starch(NS) and chemically modified starch(RS4). NS or RS4/PVA blend films were synthesized by using the mixing process and the casting method. Glycerol(GL), sorbitol(SO), and citric acid(CA) were used as additives. The chemically modified starch (RS4) was synthesized by using sodium trimetaphosphate (STMP) and sodium tripolyphosphate (STPP) as a crosslinker. Tensile strength(TS), elongation(%E), degree of swelling(DS), and solubility(S) of the films were measured. The result of the measurements indicated the RS4-added film was better than the NS-added film. Especially, the RS4/PVA blend film with CA as an additive showed the physical properties superior to other films. |
