Starch-based films were prepared by a solution casting method

the raw material are starch and poly(vinyl alcohol)

glycol is plasticizer.The effects of various factors

such as feed concentration

the mass ratio and plasticizer content

on mechanical

oil resistance and crystallization properties were examined.The results show that the optimum feed concentration of 7.5%;polyvinyl alcohol content is higher

the performance of composite films is better;when starch

polyvinyl alcohol and glycerin content in the ratio of 6:6:4

the mechanical properties of films is the best

tensile strength and elongation at break reached 13.3 MPa and 160% respectively

and polarizing microscope demonstrates that the crystallization properties is also the best.