Used as a non-ionic, water-soluble polymer in biomedical applications due to its biocompatibility and low toxicity. Commonly employed in drug delivery systems where it enhances the circulation time of therapeutic agents by providing a stealth effect, reducing immune recognition. Acts as a stabilizer in nanoparticle formulations and is used in surface coatings to prevent protein fouling. Also utilized in tissue engineering scaffolds and hydrogels for controlled release and improved mechanical properties. Its thermoresponsive behavior allows for smart material design in sensors and actuators.