Use of plasma to immobilize protein on polymeric surfaces
First Claim
1. A method for the immobilization of a protein on a polymer surface which comprises:
- coating said polymer surface with a solution of said protein;
exposing said coated polymer to an environment containing a gas plasma to form free radicals; and
covalently bonding said protein to said polymeric surface at the free radical sites.
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Abstract
The present invention relates to a method of immobilizing proteins on a polymeric matrix by means of plasma activation and an apparatus and process for the use of such material. The protein mixture is applied to the surface of the polymeric matrix with or without the addition of a crosslinking agent. If is then placed into a plasma generator, wherein the functional groups on both the protein and the matrix molecules are activated to form free radicals. Upon returning from their high energy state, the free radicals form covalent bonds between the proteins and between the protein and the polymeric matrix. Using this method, the proteins are nonspecifically immobilized on the surface of the polymeric matrix. The method can be utilized to immobilize proteins on the surface of polymeric membranes, polymeric beads, polymeric tubes and polymeric plates. The immobilized protein has high biological activity and stability.
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Citations
11 Claims
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1. A method for the immobilization of a protein on a polymer surface which comprises:
- coating said polymer surface with a solution of said protein;
exposing said coated polymer to an environment containing a gas plasma to form free radicals; and
covalently bonding said protein to said polymeric surface at the free radical sites. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- coating said polymer surface with a solution of said protein;
Specification