Abstract

A comparative analysis has been performed for silver nanoparticle dispersions obtained by the chemical reduction of Ag⁺ ions using several samples of chitosan with different molecular masses as reductants and stabilizers. The structure and conductivity of ring deposits resulting from the evaporation of droplets of the obtained dispersion have been studied. It has been shown that the average size of silver nanoparticles, their number concentration, and the degree of precursor reduction weakly depend on chitosan molecular mass, while the geometric parameters and electrical conductivity of the ring deposits substantially change upon the passage from oligochitosans to high-molecular-mass chitosan.

中文翻译：

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还原剂（壳聚糖）分子量对银纳米颗粒分散体合成的影响以及这些分散体的液滴蒸发导致的环状沉积物的性质

摘要

使用几种分子量不同的壳聚糖样品作为还原剂和稳定剂，对通过化学还原Ag ⁺离子获得的银纳米颗粒分散体进行了比较分析。已经研究了由所得分散体的液滴蒸发产生的环状沉积物的结构和电导率。已经表明，银纳米颗粒的平均尺寸，其数量浓度和前体还原程度在很大程度上取决于壳聚糖的分子量，而环沉积物的几何参数和电导率随着从低聚壳聚糖到高壳聚糖的转变而发生实质性变化。分子质量壳聚糖。