Method of applying a protein coating to a substrate and article thereof

A protein-coated permeable sheet comprising:

• a permeable sheet having a plurality of individual exposed surfaces, at least a portion of which having a surface energy of less than about 45 dynes per centimeter;
• and
• amphiphilic proteins adsorbed onto at least some individual exposed surfaces to define a gradient distribution of amphiphilic protein coating along at least one dimension of the permeable sheet.

A protein-coated fibrous material comprising:

• a matrix of fibrous material having individual exposed surfaces, at least a portion of which having a surface energy of less than about 45 dynes per centimeter;
• and
• amphiphilic proteins adsorbed onto at least some individual exposed surfaces to define a gradient distribution of amphiphilic protein coating along at least one dimension of the matrix of fibrous material.

A protein-coated film-like material comprising:

• an apertured film-like material having individual exposed surfaces, at least a portion of which having a surface energy of less than about 45 dynes per centimeter;
• and
• amphiphilic proteins adsorbed onto at least some individual exposed surfaces to define a gradient distribution of amphiphilic protein coating along at least one dimension of the apertured film-like material.

A protein-coated fibrous material comprising:

• a matrix of fibrous polyolefin material having individual exposed surfaces, at least a portion of which having a surface energy of less than about 45 dynes per centimeter, and
• amphiphilic proteins adsorbed onto at least some individual exposed surfaces to define a gradient distribution of amphiphilic protein coating along at least one dimension of the matrix of fibrous polyolefin material.