Joy, Mathew and Iyengar, Srividhya J and Chakraborty, Jui and Ghosh, Swapankumar (2017) Layered double hydroxide using hydrothermal treatment: morphology evolution, intercalation and release kinetics of diclofenac sodium. Frontiers of Materials Science, 11 (4). pp. 395-408. ISSN 2095-025X

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Abstract

The present work demonstrates the possibilities of hydrothermal transformation of Zn-Al layered double hydroxide (LDH) nanostructure by varying the synthetic conditions. The manipulation in washing step before hydrothermal treatment allows control over crystal morphologies, size and stability of their aqueous solutions. We examined the crystal growth process in the presence and the absence of extra ions during hydrothermal treatment and its dependence on the drug (diclofenac sodium (Dic-Na)) loading and release processes. Hexagonal plate-like crystals show sustained release with similar to 90% of the drug from the matrix in a week, suggesting the applicability of LDH nanohybrids in sustained drug delivery systems. The fits to the release kinetics data indicated the drug release as a diffusion-controlled release process. LDH with rod-like morphology shows excellent colloidal stability in aqueous suspension, as studied by photon correlation spectroscopy.

Item Type:	Article
Subjects:	Engineering Materials
Divisions:	Bioceramics & Coating
Depositing User:	Bidhan Chaudhuri
Date Deposited:	25 Jan 2018 07:35
Last Modified:	25 Jan 2018 07:35
URI:	http://cgcri.csircentral.net/id/eprint/4043

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