2008 NSTI Nanotechnology Conference and Trade Show - Nanotech 2008 - 11th Annual

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TechConnect Summit
Clean Technology 2008

Silver nanoparticles/hydrophobically associating polyacrylamide nanocomposites: Preparation, characterization, and applications.

C.J. Espinoza-González, A. Ledezma-Pérez, J. Romero-García, E. Jiménez-Regalado, H. Maldonado-Textle, R. Guerrero-Santos
Centro de Investigacion en Quimica Aplicada, MX

Keywords:
hydrophobically associating polyacrylamides, silver nanoparticles, electrospinning, nanofibers

Abstract:
Associative polymers constitute a class of macromolecules containing hydrophobic groups which can associate to form weak reversible physical bonds. These polymeric systems are extensively used in the formulation of many industrial products such rheology modifiers of a variety of systems including cosmetics, paints and other aqueous systems, where flow behavior influences the effectiveness of application. This study is focused on the uses and applications of hydrophobically associating polyacrylamides (HAPAM), synthesized by micellar polymerization, and used as new reducing and stabilizing agents for the formation of silver nanoparticles (Ag-Np´s). Transmission electron microscopy (TEM), UV-vis (UV-vis), and Fourier-transform infrared (FTIR) techniques were used to study the morphology, size distribution, stability, and interaction of the Ag-Np´s with the polymer matrix. The silver nanocomposite (HAPAM-Ag) obtained was tested as antimicrobial agent against Escherichia coli and Staphilococcus aureus. Additionally, nanofibers of HAPAM-Ag solution and bicomponent solution of HAPAM-Ag and poly(vinyl alcohol) were prepared by electrospinning. Scanning electron microscopy (SEM) and TEM were used to characterize the fiber mats.


Nanotech 2008 Conference Program Abstract