以甘油/山梨醇为复配增塑剂,聚乙烯醇-魔芋葡甘聚糖共混体系为母液制备了包装膜,并对甘油用量、山梨醇用量对薄膜的力学性能和光学性能的影响进行了研究,结果表明复配增塑剂能与共混体系形成新的氢键作用,当甘油用量为0.3mL,山梨醇用量为0.1g时制得的包装膜性能最佳,此时拉伸强度可达8.0MPa,断裂伸长率在140%~160%之间;透光率达95%,雾度在4%~4.5%之间。 The glycerol / sorbitol complex plasticizer and polyvinyl alcohol - konjac glucomannan blend system were used as the mother liquor to prepare the packaging film. The effects of the amount of glycerol and sorbitol on the mechanical and optical properties of the film were investigated. The results show that the compound plasticizer can form a new hydrogen bond with the blend system. When the dosage of glycerol is 0.3mL and the dosage of sorbitol is 0.1g, the performance of the packaging film is the best. At this time, the tensile strength can be Up to 8.0MPa, the elongation at break is between 140% and 160%; the light transmittance is up to 95% and the haze is between 4% and 4.5%.