Hydrogels: Introduction, Preparation, Characterization and ...

Human Journals Review Article October 2015 Vol.:1, Issue:1 All rights are reserved by Shivani P. Shetye et al. Hydrogels: Introduction, Preparation, Characterization and Applications Keywords: hydrogels, swelling, mechanical, biocompatible, preparation, applications, sensors, contact lenses ABSTRACT Hydrogels are three-dimensional, hydrophilic, polymeric networks capable of absorbing large amounts of water or biological fluids. Due to their high water content, porosity and soft consistency, they closely simulate natural living tissue, more so than any other class of synthetic biomaterials. Furthermore, hydrogels can be formulated in a variety of physical forms, including slabs, microparticles, nanoparticles, coatings, and films.

Oct 03, 2015 · Hydrogels appearance as matrix, film, or microsphere depends on the technique of polymerization involved in the preparation process [5]. 6) Classification according to network electrical charge Hydrogels may be categorized into four groups on the basis of presence or absence of electrical charge located on the cross-linked chains:

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