Abstract Chitosan (CS) film has unique advantages, however, the poor physicochemical properties greatly limit its practical application. Interestingly, shellac nanoparticles (SNPs) could be used to enhance the properties of CS films. The particle size, ζ-potential, and dispersibility of the SNPs prepared by the anti-solvent precipitation method were detected by a laser nanometer particle size analyzer, and the results showed that the SNPs had concentration-dependent particle size, good dispersibility, and good stability. The SNPs incorporated CS films (CSNPs) were prepared by solution-casting. The chemical structures of the CSNPs films were characterized by FT-IR, and the surface and cross-section morphologies of the films were characterized by scanning electron microscopy (SEM). Furthermore, the physical properties, including thermal stability, mechanical properties, color parameters, water vapor permeability, and UV barrier characteristics, were also characterized. The results showed that SNPs could uniformly disperse in the films, and therefore significantly enhanced the thermal stability, color, mechanical properties, and UV adsorption of the films while reduced the water vapor permeability of the films. More notably, curcumin-incorporated CSNPs films had shown good effects on preventing shrimp spoilage.

中文翻译：

---

通过掺入虫胶纳米颗粒改善壳聚糖薄膜的性能

摘要 壳聚糖（CS）薄膜具有独特的优势，但其较差的理化性能极大地限制了其实际应用。有趣的是，虫胶纳米粒子 (SNP) 可用于增强 CS 薄膜的性能。采用激光纳米粒度分析仪对反溶剂沉淀法制备的SNPs的粒径、ζ电位和分散性进行检测，结果表明SNPs具有浓度依赖性粒径、良好的分散性和良好的分散性。稳定。通过溶液浇铸制备包含 SNP 的 CS 薄膜（CSNP）。CSNPs薄膜的化学结构通过FT-IR表征，薄膜的表面和横截面形貌通过扫描电子显微镜（SEM）表征。此外，物理特性，包括热稳定性，还表征了机械性能、颜色参数、水蒸气渗透性和紫外线阻隔特性。结果表明，SNPs可以均匀地分散在薄膜中，从而显着提高了薄膜的热稳定性、颜色、机械性能和紫外线吸收能力，同时降低了薄膜的水蒸气渗透率。更值得注意的是，掺入姜黄素的 CSNPs 薄膜在防止虾腐败方面表现出良好的效果。