A review article on PH- sensitive Hydrogel

Hydrogels are a type of hydrophilic network that can be cross-linked through physical or chemical means. They are a three-dimensional network. Hydrogels are also known as hydrophilic gels due to their significant water absorption capacity. Hydrogels are known for their swelling, mechanical qualities, biodegradability, elasticity, biocompatibility, ease of modification and flexibility, among other attributes. This article discusses general hydrogels knowledge, including its significance, preparation process, synthesis, chemical and physical properties, features, benefits, and drawbacks. Hydrogels that are sensitive to pH have advanced significantly in the last few years. The creation of novel hydrogel systems with higher sensitivity has made this possible. Up to 10−5 pH units of sensitivity have previously been determined. Applications for hydrogen in medicine include tissue engineering, contact lenses, wound dressings, and the release of medicinal agents. We talk about hydrogels, their varieties, their qualities and their uses in medicine.