In which of the following are hydrogels used?
- Controlled drug delivery in patients.
- Mobile air-conditioning systems.
- Preparation of industrial lubricants.
Select the correct answer using the code given below:
- 1 only
- 1 and 2 only
- 2 and 3 only
- 1, 2 and 3
Explanation
Controlled drug delivery in patients is correct
- Hydrogels are three-dimensional spatial network systems that use water as the dispersing medium, are soft in nature, can maintain a certain shape, and have strong water absorption capacity (water content can be as high as 99%). In addition, hydrogels also have good biocompatibility, biodegradability, etc. They are widely used in biomedical fields. They are extensively utilised in controlled drug delivery systems. They can encapsulate drugs and release them in a controlled manner in response to stimuli such as pH changes, temperature variations, or specific enzymes.
Mobile air-conditioning systems is incorrect
- Although hydrogels can absorb moisture and have thermal properties, their application in air-conditioning is not significant. They are not yet in active use.
Preparation of industrial lubricants is incorrect
- Hydrogels are not used in the preparation of industrial lubricants, which typically require oil-based or synthetic substances for reducing friction.
