Hydrogel film composed of chitosan (CS) as raw material was prepared by free radical polymerization. Silicon was introduced into the hydrogel film in different ways (covalent/non-covalent) to improve the physical properties of the film, and β-acids were loaded to enhance the antibacterial activity of the film. Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and X-ray diffraction (XRD) analysis were used to characterize the structure of films. The mechanical results indicated that when nano-silica (0.3%) was introduced into film (containing 0.2% β-acids) by non-covalently bond, the tensile strength increased to 8.59 MPa. Meanwhile silicon (0.3%) entered the film by covalent bonding, the tensile strength increased to 7.99 MPa. The films loaded with β-acids had well ability to blocks ultraviolet rays and exhibited inhibitory effect on E. coli and S. aureus. In the PBS (37 °C, pH = 7.4) simulant solution, the release mechanism of most films to release the β-acids followed non-Fick diffusion (n > 0.5). It could be concluded that the prepared hydrogel films loading with β-acids had broad application prospects in food packaging material with antibacterial property and controlled release.

以壳聚糖（CS）为原料，通过自由基聚合制备了水凝胶薄膜。硅以不同的方式（共价/非共价）引入水凝胶薄膜以改善薄膜的物理性能，并加载β-酸以增强薄膜的抗菌活性。傅里叶变换红外光谱 (FTIR)、扫描电子显微镜 (SEM) 和 X 射线衍射 (XRD) 分析用于表征薄膜的结构。力学结果表明，当纳米二氧化硅（0.3%）通过非共价键引入薄膜（含0.2%β-酸）时，拉伸强度增加到8.59 MPa。同时硅 (0.3%) 通过共价键进入薄膜，拉伸强度增加到 7.99 MPa。大肠杆菌和金黄色葡萄球菌。在 PBS (37 °C, pH = 7.4) 模拟溶液中，大多数薄膜释放 β-酸的释放机制遵循非菲克扩散 ( n  > 0.5)。可以得出结论，所制备的负载β-酸的水凝胶薄膜在具有抗菌性和控释性的食品包装材料中具有广阔的应用前景。