目的 研究新型的抗菌保鲜、力学性能高的聚丙烯无纺布活性包装材料。方法 以聚丙烯无纺布为包装基材，通过浸渍涂覆的方法向无纺布中添加不同组分的壳聚糖和茶多酚，然后通过透气性、保鲜性、抗菌性以及 FTIR 等来表征研究茶多酚添加量对活性材料性能的影响。结果 由红外分析可知，茶多酚的加入提高了壳聚糖与基材的相容性；由保鲜实验可知，材料可延缓杨梅的腐败变质，减缓了可滴定酸含量的下降速率，能减少蒸腾作用引起的杨梅质量损失，延长了货架期（从 4 d 延长至 8~10 d），起到了很好的保鲜作用；由抑菌试验可知，材料具有很好的抑菌效果。当茶多酚质量分数为 1.5%时，其抑菌效果最好，抑菌率最大为 99.1%。结论 通过对制备的活性包装材料与空白对照组的各种性能相比较，可知聚丙烯活性包装材料具有很好的保鲜抑菌效果，并且具有较高的力学性能，当壳聚糖和茶多酚质量分数均为 1.5%时材料的性能最佳。

The work aims to study the new polypropylene non-woven fabric active packaging materials with high bacteriostasis, antistaling and mechanical properties. Polypropylene non-woven fabric was chosen as the base material, and then different components of chitosan and tea polyphenols were added to non-woven fabric by impregnating and coating method. Last, the effects of the added amount of tea polyphenols on the properties of the active materials were characterized and studied by the air permeability, freshness, antibiosis and FTIR, etc. FTIR showed that the addition of tea polyphenols improved the compatibility of chitosan with the base material. Preservation experiments showed that the materials could retard the spoilage of waxberry, slow down the decline rate of titratable acid content, reduce the mass loss of waxberry caused by transpiration, and extend the shelf life (from 4 d to 8~10 d), which played a good preservative role. The bacteriostasis experiment showed that the materials had very good antibacterial effect. When the mass fraction of the tea polyphenols was 1.5%, the antibacterial effect was the best and the maximum rate of bacteriostasis was 99.1%. Through comparing the performances of the prepared active packaging material with the blank control group, it can be concluded that polypropylene active packaging material has very good preservative and antibacterial effects and higher mechanical properties. When the mass fraction of chitosan and tea polyphenols is 1.5%, the materials have the best performance.