| 摘要 |
There is provided a solid material useful in medicine, especially a film material for use as a wound dressing or as a drug delivery vehicle, which comprises a molecular mixture of (a) a compound which has film-forming properties, for example hydroxyethylcellulose, hydroxypropylmethylcellulose or polyvinyl alcohol, and (b) a polyoxyethylene-polyoxypropylene block copolymer or a tetrasubstituted derivative of ethylene-diamine in which the substituents are block copolymers of polyoxyethylene-polyoxypropylene, as a modifier. The molecular mixture may be formed, for example, by evaporating a solution of the two components (a) and (b) in a solvent, or by cooling a liquid composition comprising at least one of components (a) and (b) in molten form from an elevated temperature. |
