| 摘要 |
A sheet material consists essentially of a continuous, plasticized protein matrix incorporating entrapped gas bubbles in a layer adjacent to one surface only of the sheet. The protein may be collagen, albumin, gelatin, fibronectin or other proteins, and the sheet material may be used as a wound dressing. A reinforcing layer may be present. A method of manufacture of the protein sheet material comprises dispersing a protein in a solvent to form a liquid dispersion; dispersing gas bubbles in the liquid dispersion; spreading the liquid dispersion containing the dispersed gas bubbles to form a sheet thereof; allowing the gas bubbles to rise towards the top of said sheet to form distinct foamed and unfoamed layers in the sheet; crosslinking the protein in the foamed dispersion sheet; and drying the foamed dispersion sheet. |
