Department of Chemistry, Veer Surendra Sai University of Technology, Burla, Sambalpur 768018, India.
Department of Chemistry, Upendra Nath College, Soro, Balasore 756045, India.
Carbohydr Polym. 2015 Dec 10;134:60-5. doi: 10.1016/j.carbpol.2015.06.081. Epub 2015 Jul 3.
Nano silicon carbide (SiC) designed chitosan nanocomposites were prepared by solution technique. Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) were used for studying structural interaction of nano silicon carbide (SiC) with chitosan. The morphology of chitosan/SiC nanocomposites was investigated by field emission scanning electron microscope (FESEM), and high resolution transmission electron microscope (HRTEM). The thermal stability of chitosan was substantially increased due to incorporation of stable silicon carbide nanopowder. The oxygen permeability of chitosan/SiC nanocomposites was reduced by three folds as compared to the virgin chitosan. The chemical resistance properties of chitosan were enhanced due to the incorporation of nano SiC. The biodegradability was investigated using sludge water. The tensile strength of chitosan/SiC nanocomposites was increased with increasing percentage of SiC. The substantial reduction in oxygen barrier properties in combination with increased thermal stability, tensile strength and chemical resistance properties; the synthesized nanocomposite may be suitable for packaging applications.
采用溶液法制备了纳米碳化硅（SiC）设计的壳聚糖纳米复合材料。采用傅里叶变换红外光谱（FTIR）和 X 射线衍射（XRD）研究了纳米碳化硅（SiC）与壳聚糖的结构相互作用。通过场发射扫描电子显微镜（FESEM）和高分辨率透射电子显微镜（HRTEM）研究了壳聚糖/SiC 纳米复合材料的形态。由于掺入了稳定的碳化硅纳米粉末，壳聚糖的热稳定性大大提高。与原始壳聚糖相比，壳聚糖/SiC 纳米复合材料的氧气透过率降低了三倍。由于纳米 SiC 的掺入，壳聚糖的耐化学性得到增强。采用污泥水研究了其生物降解性。随着 SiC 含量的增加，壳聚糖/SiC 纳米复合材料的拉伸强度也随之增加。氧阻隔性能的显著降低，结合热稳定性、拉伸强度和耐化学性的提高；合成的纳米复合材料可能适用于包装应用。
