Hydrogels

The video explains the properties and uses of hydrogels, focusing on their super absorbent nature. It begins with an introduction to hydrogels found in disposable nappies, followed by an experiment demonstrating their ability to absorb water and react to salt. The chemical structure and reactions of hydrogels are discussed, highlighting how they maintain dryness by interacting with water. The video concludes with industrial applications, such as their use in contact lenses, emphasizing their flexibility and comfort.

What role do negative charges play in the behavior of hydrogels when they come into contact with water?

Discuss the importance of hydrogels in keeping babies dry in disposable nappies.

How are hydrogels utilized in modern soft contact lenses?