Examples of hydrophilic types:
Low water absorption and swell with maximum mechanical stability and dessicant action.
for encapsulation of other chemical materials for preservation and controlled release.
Most used for moulding and mechanical devices with best combination of mechanical stability and volume expansion.
High volume expansion and water absorption used for wound care and similar applications
Contact lens and implant materials are available in a range of water contents from 61% to 78% and with linear expansions from 1.39 to 1.67.
Blended formulations are made using a combination of proprietry and/or commercial materials for the manufacture of a range of products.