Citation:

NADAGOUDA, M. N. AND R. S. VARMA. SYNTHESIS OF THERMALLY STABLE CARBOXYMETHYL CELLULOSE/METAL BIODEGRADABLE NANOCOMPOSITES FOR POTENTIAL BIOLOGICAL APPLICATIONS. DOI: 10.1021/bm70044, A. Albertsson (ed.), BioMacromolecules. American Chemical Society, Washington, DC, 8(9):2762-2767, (2007).

Impact/Purpose:

Journal Article

Description:

A green approach is described that generates bulk quantities of nanocomposites containing transition metals such as Cu, Ag, In and Fe at room temperature using a biodegradable polymer carboxymethyl cellulose (CMC) by reacting respective metal salts with sodium salt of CMC in aqueous media. These nanocomposites exhibit broader decomposition temperatures when compared with control CMC and Ag-based CMC nanocomposites exhibit luminescent property at longer wavelength. The noble metals such as Au, Pt, and Pd do not react at room temperature with aqueous solution of CMC but do so rapidly under microwave irradiation (MW) conditions at 100 0C. This environmentally benign approach, which provides facile entry to production of multiple shaped noble nanostructures without using any toxic reducing agent such as sodium borohydride (NaBH4), hydroxylamine hydrochloride, etc. and/or capping/surfactant agent and which uses a benign biodegradable polymer CMC, could find widespread technological and medicinal applications. The ensuing nanocomposites derived at room temperature and MW condition were characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), infrared spectroscopy (IR), UV-visible spectroscopy, X-ray mapping, energy dispersive analysis (EDX) and thermogravimetric analysis (TGA).

URLs/Downloads:

Record Details: