The Thai silk sericin /Polyvinyl alcohol blending films were prepared by molding method. In brief,the Polyvinyl alcohol powers and silk sericin solution were blending together at 80 with different concentrations.The silk sericin/Polyvinyl alcohol blending solutions were poured into the plastic mold and dried in the oven at 37 for about 2 days.The overall preparation of film is shown in Fig 1.