Roy Swarup, Zhai Lindong, Kim Hyun Chan, Pham Duc Hoa, Alrobei Hussein, Kim Jaehwan
Creative Research Center for Nanocellulose Future Composites, Department of Mechanical Engineering, Inha University, Incheon 22212, Korea.
Department of Mechanical Engineering, Prince Sattam bin Abdul Aziz University, AlKharj 11942, Saudi Arabia.
Polymers (Basel). 2021 Jan 11;13(2):228. doi: 10.3390/polym13020228.
A chitosan-based nanocomposite film with tannic acid (TA) as a cross-linker and titanium dioxide nanoparticles (TiO) as a reinforcing agent was developed with a solution casting technique. TA and TiO are biocompatible with chitosan, and this paper studied the synergistic effect of the cross-linker and the reinforcing agent. The addition of TA enhanced the ultraviolet blocking and mechanical properties of the chitosan-based nanocomposite film. The reinforcement of TiO in chitosan/TA further improved the nanocomposite film's mechanical properties compared to the neat chitosan or chitosan/TA film. The thermal stability of the chitosan-based nanocomposite film was slightly enhanced, whereas the swelling ratio decreased. Interestingly, its water vapor barrier property was also significantly increased. The developed chitosan-based nanocomposite film showed potent antioxidant activity, and it is promising for active food packaging.
采用溶液浇铸技术制备了一种以单宁酸（TA）为交联剂、二氧化钛纳米颗粒（TiO）为增强剂的壳聚糖基纳米复合薄膜。TA和TiO与壳聚糖具有生物相容性，本文研究了交联剂和增强剂的协同作用。TA的加入增强了壳聚糖基纳米复合薄膜的紫外线阻隔性能和机械性能。与纯壳聚糖或壳聚糖/TA薄膜相比，TiO在壳聚糖/TA中的增强作用进一步改善了纳米复合薄膜的机械性能。壳聚糖基纳米复合薄膜的热稳定性略有提高，而溶胀率降低。有趣的是，其水蒸气阻隔性能也显著提高。所制备的壳聚糖基纳米复合薄膜具有较强的抗氧化活性，有望用于活性食品包装。
