abstract |
An active, immobilized enzyme system is formed from an enzyme and a hydrophilic poly (urea-urethane) foam, said foam surrounding, entrapping and supporting the enzyme in an active configuration. The hydrophilic foam is formed by the reaction of water with a hydrophilic isocyanate-terminated polyoxyalkylene prepolymer containing at least 50 mole percent of oxyethylene in the prepolymer backbone. |