A hydrogel is a biphasic material, a mixture of porous and permeable solids and at least 10% of water or other interstitial fluid. [1][2] The solid phase is a water insoluble three dimensional network of polymers, having absorbed a large amount of water or biological fluids. [2][3][4][5] Hydrogels have several applications, especially in the bio...

This review compiles the fundamental concepts of hydrogels, such as materials involved, synthesis approach, classification of hydrogels, ways of crosslinking, types of bonding, and, most importantly, the properties of hydrogels for abundant applications.

2022年11月21日 · The material is made from a polymer — a chain made from links of identical units — that have free, water-attracting ends sticking out. So in the presence of water, this material may hold (bond) those water molecules for quite a while. Some hydrogels are used in baby diapers to hold urine.

Hydrogels are polymeric materials consisting of a sparse network of polymer chains embedded in an aqueous medium. Hydrogels can retain large amounts of water within their intermolecular space due to strong hydrophilicity of the polymer chains and large porosity.

2015年3月1日 · Hydrophilic gels that are usually referred to as hydrogels are networks of polymer chains that are sometimes found as colloidal gels in which water is the dispersion medium [1]. Researchers, over the years, have defined hydrogels in many different ways.

Hydrogels are crosslinked polymer chains with three-dimensional (3D) network structures, which can absorb relatively large amounts of fluid. Because of the high water content, soft structure, and porosity of hydrogels, they closely resemble living tissues.

2023年11月1日 · Hydrogels are hydrophilic, three-dimensional and cross-linked polymeric networks capable of imbibing water or biological fluids approximately 10–20 times of their initial weight (Ahmed, 2015).