Results show that when the content of sericin and PVA keep constant,properties can be enhanced with the increasing of the numbers of freeze/thaw cycles.

• 结果表明:当制备过程中循环冷冻-解冻次数增加,且共混薄膜中丝胶与聚乙烯醇的含量相等时,可提高薄膜的综合性能。