Tang Wufei, Zhang Aozheng, Cheng Youwei, Dessie Wubliker, Liao Yunhui, Chen Huifang, Qin Zuodong, Wang Xin, Jin Xiaodong
Hunan Engineering Technology Research Center for Comprehensive Development and Utilization of Biomass Resources, College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China; CAS Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS), Guangzhou 510640, China.
Hunan Engineering Technology Research Center for Comprehensive Development and Utilization of Biomass Resources, College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China.
Int J Biol Macromol. 2023 Jan 15;225:266-276. doi: 10.1016/j.ijbiomac.2022.10.261. Epub 2022 Nov 3.
In this work, a biomass composite material (CS@NC@PA-Na) was prepared from chitosan (CS), nano-cellulose (NC) and sodium phytate (PA-Na). The prepared products were characterized by scanning electron microscopy (SEM), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectrometry (XPS) and X-ray diffraction (XRD). The fire/water safety and antimicrobial properties of the CS@NC@PA-Na were fully studied. The results indicated CS@NC@PA-Na (50 mg) could effectively reduce the concentration of methyl orange by 85 % under 30 min adsorption. Meanwhile, only 5 wt% CS@NC@PA-Na could increase the limiting oxygen index (LOI) value of epoxy resin composite from 24.5 to 30.1 %, and decrease the peak heat/smoke release rate by 29.5 and 33.3 %, respectively. Moreover, CS@NC@PA-Na also exhibited excellent antibacterial effect. This work provides an efficient, feasible and eco-friendly route for large-scale production of multi-functional CS-based biomass materials that could be used in the fields of fire safety and environmental conservation.
在本工作中，由壳聚糖（CS）、纳米纤维素（NC）和植酸钠（PA-Na）制备了一种生物质复合材料（CS@NC@PA-Na）。通过扫描电子显微镜（SEM）、热重分析（TGA）、傅里叶变换红外光谱（FTIR）、X射线光电子能谱（XPS）和X射线衍射（XRD）对所制备的产物进行了表征。对CS@NC@PA-Na的防火/防水安全性和抗菌性能进行了全面研究。结果表明，CS@NC@PA-Na（50毫克）在30分钟吸附时间内可有效降低甲基橙浓度85%。同时，仅5重量%的CS@NC@PA-Na就能使环氧树脂复合材料的极限氧指数（LOI）值从24.5%提高到30.1%，并分别使峰值热释放速率和峰值烟释放速率降低29.5%和33.3%。此外，CS@NC@PA-Na还表现出优异的抗菌效果。这项工作为大规模生产可用于消防安全和环境保护领域的多功能CS基生物质材料提供了一条高效、可行且环保的途径。
