METHOD FOR FORMING GRAFT LAYER, METHOD FOR PRODUCING COMPOSITE, AND TREATMENT LIQUID FOR FORMING GRAFT LAYER
Provided is a method that efficiently forms a graft chain having a length the same as or greater than heretofore and/or that efficiently foams a graft layer having a thickness the same as or greater than those resulted from a known technique. A method for forming a graft layer according to an aspect of the present disclosure includes: a contact step of bringing a base member containing a polymer A into contact with a treatment liquid in which a compound B and a polymer C are contained in a solvent D; and, during the contact step, a polymerization step of graft-polymerizing the compound B onto the polymer A that constitutes at least a portion of the surface of the base member.
1 . A method for forming a graft layer comprising:
a contact step of bringing a base member containing a polymer A into contact with a treatment liquid in which a compound B and a polymer C are contained in a solvent D; and
during the contact step, a polymerization step of graft-polymerizing the compound B onto the polymer A that constitutes at least a part of a surface of the base member.
2 . The method for forming a graft layer according to claim 1 , wherein the polymer C has a weight average molecular weight of 10000 or greater.
3 . The method for forming a graft layer according to claim 1 , wherein the solvent D is a good solvent for a polymer B and/or the polymer C, the polymer B being resulted from polymerization of the compound B.
4 . The method for forming a graft layer according to claim 1 , wherein the treatment liquid further comprises an inorganic salt that is soluble in the solvent D.
5 . The method for forming a graft layer according to claim 1 , wherein the compound B comprises a phosphorylcholine group.
6 . The method for forming a graft layer according to claim 1 , wherein the compound B comprises a polymerizable methacrylic acid unit.
7 . The method for forming a graft layer according to claim 1 , wherein the polymer A is a polyolefin or an aromatic polyether ketone.
8 . A method for producing a composite that comprises a base member and a graft layer covering at least a part of a surface of the base member, the method comprising forming a graft layer in which a compound B is graft-polymerized onto at least a part of the surface comprising a polymer A using the method for forming a graft layer described claim 1 .
9 . The method for producing a composite according to claim 8 , wherein the composite is a member of a medical device.
10 . The method for producing a composite according to claim 9 , wherein the member of a medical device is a member of an artificial joint.
11 . A treatment liquid in which a compound B and a polymer C are contained in a solvent D,
the treatment liquid being for forming a graft layer in which the compound B is graft-polymerized onto at least a part of a surface of a base member containing a polymer A.
12 . The treatment liquid according to claim 11 , wherein the polymer C has a weight average molecular weight of 10000 or greater.
13 . The treatment liquid according to claim 11 , wherein the solvent D is a good solvent for a polymer B and/or the polymer C, the polymer B being resulted from polymerization of the compound B.
14 . The treatment liquid according to claim 11 , further comprising an inorganic salt that is soluble in the solvent D.
15 . The treatment liquid according to claim 11 , wherein the compound B comprises a phosphorylcholine group.