A review on hydrogel: Classification, preparation techniques and applications

Hydrogel products are a class of polymeric materials with hydrophilic structure that allows them to store huge amounts water in three-dimensional networks. The presence groups such as NH2, COOH, OH, CONH2, -CONH-, and -SO3H, well the capillary effect osmotic pressure, contribute network's hydrophilicity. Weaker forces, like van der Waals forces hydrogen bonds, can frequently act cross-links, resulting swelling networks behave hydrogels. Depending on their physical chemical structure, hydrogels be classified variety ways. Material scientists biological researchers continue fascinated by today, significant progress has been made terms formulations applications. However, many articles technical studies dealing hydrogel from an engineering standpoint were investigated provide broad overview technological features this rapidly expanding interdisciplinary field study. major goal paper is examine literature technologies used creation, categorization, use