Nowadays, hydrogel is an important polymeric material that retains large water into their structures because they have hydrophilic groups [1] such as carboxylic and hydroxyl groups etc., appropriately crosslinked in polymer structure
Nowadays, hydrogel is an important polymeric material that retains large water into their structures becausethey have hydrophilic groups [1] such as carboxylic and hydroxyl groups etc., appropriately crosslinked in polymerstructure