Polymeric substrates with attached polymeric chains
Assignee3M Innovative Properties Company
InventorsJerald K. Rasmussen, Stephen B. Roscoe, Babu N. Gaddam, George W. Griesgraber, Daniel J. O'Neal, Eli P. Narveson
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Abstract
Articles with covalently attached thiocarbonylthio-containing groups are provided. More specifically, the articles include a solid polymeric substrate with a plurality of thiocarbonylthio-containing groups covalently attached directly to a carbon atom in a polymeric backbone of the solid polymeric substrate. Methods of making the articles with covalently attached thiocarbonylthio-containing are provided. Additionally, methods of using these articles to generate further articles with covalently attached polymeric chains are provided.
Claims15
A method of making an article having a solid polymeric substrate with covalently attached polymeric chains, the method comprising:
- providing a solid polymeric substrate;
- generating free radicals on a surface of the solid polymeric substrate to form a treated substrate;
- reacting the free radicals of the treated substrate with a fluid comprising a thiocarbonylthio-containing compound to covalently bond a plurality of thiocarbonylthio-containing groups directly and covalently to the solid polymeric substrate and forming a functionalized substrate;
- preparing a reaction mixture by contacting the functionalized substrate with a radically polymerizable monomer composition comprising a first monomer having (a) at least one ethylenically unsaturated group, (b) at least one ligand functional group that is an acidic group, basic group, or salt thereof, and (c) a spacer group that directly links the at least one ethylenically unsaturated group and the at least one the ligand functional group by a chain of at least six catenated atoms;
- and
- exposing the reaction mixture to actinic radiation and forming a polymeric chain directly and covalently attached to a carbon atom in a polymeric backbone of the solid polymeric substrate, the polymeric chains being a polymerized product of the radically polymerizable monomer composition.
An article comprising:
- a) a solid polymeric substrate;
- and
- b) polymeric chains attached directly and covalently to carbon atoms in a polymeric backbone of the solid polymeric substrate, wherein
- 1) the polymeric chains comprise a polymerized product of a radically polymerizable monomer composition comprising a first monomer having (a) at least one ethylenically unsaturated group, (b) at least one ligand functional group that is an acidic group, basic group, or salt thereof, and (c) a spacer group that directly links the at least one ethylenically unsaturated group and the at least one ligand functional group by a chain of at least six catenated atoms;
- and
- 2) at least some of the polymeric chains are terminated by a thiol or a thiocarbonylthio-containing group.
Dependencies are inferred from the claim text.