洛神花提取物/纳米TiO2/淀粉复合薄膜的制备及性能研究

doi:10.19491/j.issn.1001-9278.2025.12.005

中国塑料 ›› 2025, Vol. 39 ›› Issue (12): 27-32.DOI: 10.19491/j.issn.1001-9278.2025.12.005

洛神花提取物/纳米TiO₂/淀粉复合薄膜的制备及性能研究

贺祺祥, 郝艳玲(), 高奇奇, 王世慧

兰州交通大学化学化工学院，兰州 730070

收稿日期:2025-02-13 出版日期:2025-12-26 发布日期:2025-12-22
通讯作者: 郝艳玲（1968—），女，教授，从事环境化工材料研究，haoyl@mail.lzjyu.cn
E-mail:haoyl@mail.lzjyu.cn
基金资助:
北京工商大学高分子材料无卤阻燃剂工程实验室

Preparation and properties of roselle extract/nano⁃TiO₂/starch composite films for food packaging

HE Qixiang, HAO Yanling(), GAO Qiqi, WANG Shihui

School of Chemistry and Chemical Engineering，Lanzhou Jiaotong University，Lanzhou 730070，China

Received:2025-02-13 Online:2025-12-26 Published:2025-12-22
Contact: HAO Yanling E-mail:haoyl@mail.lzjyu.cn

摘要/Abstract

摘要：

采用流延法在玉米淀粉基质中引入二氧化钛纳米粒子和洛神花提取物（RE）制备了纳米复合薄膜，通过扫描电子显微镜和红外光谱对复合膜的微观形貌和结构进行了表征，并对薄膜的拉伸性能、阻隔性能及抗菌活性进行了研究。结果表明，TiO₂纳米粒子、洛神花提取物与淀粉分子之间有良好的相容性和相互协同作用，含有洛神花提取物和TiO₂纳米粒子的淀粉薄膜拉伸性能和阻隔性能得到了明显的改善，复合薄膜的抗氧化性主要受RE的影响，抗菌性与TiO₂和RE均有关；与淀粉膜相比，纳米复合膜的拉伸强度提高了53.3 %，水蒸气透过系数降低了27.1 %，该复合膜对紫外线有较好的隔离效果，同时表现出一定的抗菌活性和抗氧化性能，在食品包装方面有潜在的应用价值。

关键词: 纳米复合薄膜, 玉米淀粉, 洛神花, 二氧化钛

Abstract:

Nanocomposite films were fabricated by incorporating titanium dioxide （TiO₂） nanoparticles and roselle extract （RE） into a corn starch matrix using a solution casting method. The films' morphology and chemical structure were characterized by scanning electron microscopy and Fourier⁃transform infrared spectroscopy， confirming good compatibility among the starch， TiO₂， and RE components. The functional properties， including tensile strength， water vapor barrier performance， and antimicrobial activity， were systematically evaluated. The results indicated a synergistic effect between TiO₂ and RE， leading to a significant enhancement in mechanical and barrier properties. Specifically， the RE/TiO₂/starch composite film exhibited a 53.3 % increase in tensile strength and a 27.1 % reduction in water vapor permeability compared to the pure starch film. The antioxidant activity was primarily attributed to RE， while the antimicrobial effect resulted from the combined action of RE and TiO₂. Furthermore， the composite film demonstrated excellent UV⁃blocking capacity. These findings indicate that the RE/TiO₂/starch nanocomposite is a promising and multifunctional material for advanced food packaging applications.

Key words: nanocomposite films, corn starch, roselle, titanium dioxide

中图分类号:

TQ320.72⁺1

贺祺祥, 郝艳玲, 高奇奇, 王世慧. 洛神花提取物/纳米TiO₂/淀粉复合薄膜的制备及性能研究[J]. 中国塑料, 2025, 39(12): 27-32.

HE Qixiang, HAO Yanling, GAO Qiqi, WANG Shihui. Preparation and properties of roselle extract/nano⁃TiO₂/starch composite films for food packaging[J]. China Plastics, 2025, 39(12): 27-32.

图/表 9

图1 薄膜的表观

Fig.1 Appearance photographs of the film

图2 薄膜的紫外⁃可见吸收光谱

Fig.2 UV⁃vis light absorbance of films

图3 薄膜的SEM照片

Fig.3 SEM of the films

图4 薄膜的FTIR谱图

Fig.4 FTIR of the films

图5 薄膜的拉伸性能

Fig.5 Tensile properties of the film

图6 薄膜的水蒸气阻隔性能

Fig.6 Water vapor barrier properties of the films

薄膜样品

DPPH /%

FRAP/mg

TNPs/CS

RE/CS

RE/TNPs/CS

3.50±0.32^d

16.10±0.63^c

30.42±0.13^b

38.28±0.08^a

0.62±0.09^c

3.12±0.19^b

3.33±0.05^b

7.01±0.12^a

表1 薄膜的抗氧化性

Tab.1 Antioxidant activity of films

图7 薄膜的抗菌性能

Fig.7 Antibacterial properties of the films

环境友好高分子材料创新团队简介

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洛神花提取物/纳米TiO₂/淀粉复合薄膜的制备及性能研究

Preparation and properties of roselle extract/nano⁃TiO₂/starch composite films for food packaging

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