管状壳聚糖-羟基磷灰石层电沉积影响因素的研究。
Investigation of Parameters Influencing Tubular-Shaped Chitosan-Hydroxyapatite Layer Electrodeposition.
机构信息
Department of Environmental Engineering, Faculty of Process and Environmental Engineering, Lodz University of Technology, Wolczanska 213 Street, 90-924 Lodz, Poland.
Institute of Applied Radiation Chemistry, Faculty of Chemistry, Lodz University of Technology, Wroblewskiego 15 Street, 93-590 Lodz, Poland.
出版信息
Molecules. 2020 Dec 28;26(1):104. doi: 10.3390/molecules26010104.
Tubular-shaped layer electrodeposition from chitosan-hydroxyapatite colloidal solutions has found application in the field of regeneration or replacement of cylindrical tissues and organs, especially peripheral nerve tissue regeneration. Nevertheless, the quantitative and qualitative characterisation of this phenomenon has not been described. In this work, the colloidal systems are subjected to the action of an electric current initiated at different voltages. Parameters of the electrodeposition process (i.e., total charge exchanged, gas volume, and deposit thickness) are monitored over time. Deposit structures are investigated by scanning electron microscopy (SEM) and Fourier-transform infrared spectroscopy (FTIR). The value of voltage influences structural characteristics but not thickness of deposit for the process lasting at least 20 min. The calculated number of exchanged electrons for studied conditions suggests that the mechanism of deposit formation is governed not only by water electrolysis but also interactions between formed hydroxide ions and calcium ions coordinated by chitosan chains.
壳聚糖-羟基磷灰石胶体溶液的管状层电沉积在圆柱形组织和器官（特别是周围神经组织）的再生或替代领域得到了应用。然而，尚未对这一现象进行定量和定性描述。在这项工作中，胶体系统在不同电压下开始通电。随着时间的推移，监测电沉积过程的参数（即交换的总电荷量、气体体积和沉积物厚度）。通过扫描电子显微镜（SEM）和傅里叶变换红外光谱（FTIR）研究沉积物结构。对于持续至少 20 分钟的过程，电压值会影响结构特征，但不会影响沉积物的厚度。根据所研究条件下计算出的交换电子数表明，沉积物的形成机制不仅受水电解的控制，而且还受形成的氢氧根离子与壳聚糖链配位的钙离子之间相互作用的影响。
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