刊物主题:Polymer Sciences; Soft and Granular Matter, Complex Fluids and Microfluidics; Characterization and Evaluation of Materials; Physical Chemistry; Food Science; Nanotechnology and Microengineering;
出版者:Springer Berlin Heidelberg
ISSN:1435-1536
卷排序:295
文摘
The conditions needed to form a complex of polyacrylic acid with silver ions (Ag+) in aqueous solution were investigated. Ag+ formed a complex with the dissociated carboxyl units of polyacrylic acid. It was found that the complex of polyacrylic acid with silver ions formed by disproportionation of Ag+ on polyacrylic acid macromolecules. When Ag+ and H+ coexisted in solution, the negatively charged carboxyl groups of polyacrylic acid preferentially interacted with H+. The size characteristics of the polyacrylic acid macromolecular coils and polyacrylic acid–silver complex and their volume ratio were investigated in solution. Silver iodide nanoparticles were synthesized under conditions where Ag+ formed a complex with polyacrylic acid, and when they were dispersed in bulk solution. The products were characterized by transmission electronic microscopy. The presence of the polyelectrolyte–silver complex as a precursor yielded silver iodide nanoparticles of smaller size and narrower size distribution, than those formed in the absence of the polyelectrolyte–silver complex.
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