Polyurethane (PU)
Term: Polyurethane
Abbreviation: PU
Category: Polymer
Definition: Polyurethane (PU) is a synthetic polymer produced through the reaction of diisocyanates with polyols. This reaction can produce materials that are either soft and flexible, like foam, or hard and rubbery, like an elastomer. PU is strong, stretchy, and stable, which makes it useful for many medical products. Its structure can be changed to make it more flexible, more durable, or biocompatible.
Source: Synthetic Polymer
Chemical Structure: Consists of repeating urethane linkages (–NH–CO–O–) formed between isocyanate and hydroxyl groups.
Common Uses:
- Polyurethane is used for coating of biomedical devices such as catheters, vascular grafts, wound dressings, and implants.
- Its biocompatibility, flexibility, and resistance to degradation make it suitable for long-term medical implants.
- PU serves as a coating material for blood-contacting devices to reduce thrombogenicity and improve performance.
Related Resources:
Hydrophilic Polyurethane Coatings For Medical Applications
Hydrophilic Coating Polymers and Chemistries: Complete Guide
