Silver-polymer composite material containing highly dispersed silver nanoparticles was obtained from bare nanosilver. This nanocomposite was prepared in three steps. On the first step, a self-assembled monolayer with terminal amino groups was formed on the surface of nanoparticles by treatment with 2-aminoethanethiol. Then polyacrylic acid (MW=1,800) was bonded to the amino groups of the surface silver 2-aminoethanethiolate with the use of diisopropylcarbodiimide. Intermediate product formed large agglomerates in polyacrylic acid due to the presence of unreacted carboxyl groups. Finally these groups were esterified by methanol. On this step, silver nanoparticles formed a stable colloidal dispersion in the polymer matrix. The average particle size of nanosilver calculated from XRD and TEM data was 27 nm. The structure of the product was confirmed by FT-IR and NMR spectroscopy.

Silver-polymer nanocomposite material

247th National Meeting (2014)

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