Preparation and Properties of Starch-Based/PVA Composite Films
Starch-based films were prepared by a solution casting method, the raw material are starch and poly(vmyl 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.
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万方数据
维普
