Department of Mechanical Engineering, Informatics and Chemistry of Polymer Materials, Faculty of Material Technologies and Textile Design, Lodz University of Technology, Zeromskiego 116, 90-543 Lodz, Poland.
Institute of General and Ecological Chemistry, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 114, 90-543 Lodz, Poland.
Int J Mol Sci. 2022 May 12;23(10):5406. doi: 10.3390/ijms23105406.
Golden and silver-golden chitosan hydrogels and hydrogel-modified textiles of potential biomedical applications are investigated in this work. The hydrogels are formed by reactions of chitosan with HAuCl·xHO. For above the critical concentration of chitosan (c*), chitosan-Au hydrogels were prepared. For chitosan concentrations lower than c*, chitosan-Au nano- and microgels were formed. To characterise chitosan-Au structures, sol-gel analysis, UV-Vis spectrophotometry and dynamic light scattering were performed. Au concentration in the hydrogels was determined by the flame atomic absorption spectrophotometry. Colloidal chitosan-Au solutions were used for the modification of fabrics. The Au content in the modified fabrics was quantified by inductively coupled plasma mass spectrometry technique. Scanning electron microscopy with energy dispersion X-ray spectrometer was used to analyse the samples. Reflectance spectrophotometry was applied to examine the colour of the fabrics. The formation of chitosan-Au-Ag hydrogels by the competitive reaction of Au and Ag ions with the chitosan macromolecules is reported.
本文研究了具有潜在生物医学应用的金-银金色壳聚糖水凝胶和水凝胶改性纺织品。水凝胶是通过壳聚糖与 HAuCl·xHO 的反应形成的。对于高于壳聚糖的临界浓度（c*），制备了壳聚糖-金水凝胶。对于低于 c*的壳聚糖浓度，形成了壳聚糖-Au 纳米和微凝胶。为了表征壳聚糖-Au 结构，进行了溶胶-凝胶分析、UV-Vis 分光光度法和动态光散射法。通过火焰原子吸收分光光度法测定水凝胶中的金浓度。胶体壳聚糖-Au 溶液用于修饰织物。通过电感耦合等离子体质谱技术定量测定改性织物中的 Au 含量。使用扫描电子显微镜和能量色散 X 射线光谱仪对样品进行分析。反射分光光度法用于检测织物的颜色。通过 Au 和 Ag 离子与壳聚糖大分子的竞争反应形成了壳聚糖-Au-Ag 水凝胶。
