Abstract

Swadesh Kumar Vishwakarma*, Dhaneshwar Kumar Vishwakarma and Jai Narayan Mishra

ABSTRACT

These materials can be synthesized to respond to a number of physiological stimuli present in the body, such as PH, ionic strength, temperature. Hydrogels are a unique class of three dimensional cross-linked polymeric networks that can hold a large fraction of aqueous solvents and biological fluids within their structures. Nowadays, hydrogels have attracted a growing interest of many scientists in different fields of research. Intelligent hydrogels have found a significant role in a wide variety of applications such as drug delivery systems, tissue engineering, optics, diagnostics and imaging. The purpose of this paper is to present a brief review on the basis concept of hydrogels, the description about classification, synthesis methods, stimulation situations, relevant mechanisms, and applications. It also involved technologies adopted for hydrogel production together with process design implications, block diagrams, and optimized conditions of the preparation process. An innovated category of recent generations of hydrogel materials was also presented in some details.