Shape memory polymer articles with a microstructured surface
Assignee3M Innovative Properties Company
InventorsMieczyslaw H. Mazurek, Robert K. Galkiewicz, Audrey A. Sherman, James R. Starkey, Wendi J. Winkler, Halyan Zhang, Jeffrey M. Olofson
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Abstract
A shape memory polymer article is disclosed. The article may include a surface having a microstructure and it may include a shape memory polymer. The shape memory polymer may include a copolymer network. The copolymer network may be formed from the reaction product of a free radically polymerizable siloxane having greater than one functional free radically polymerizable group and at least one (meth)acrylate monomer.
Claims23
An article, comprising:
- a polymeric member including a surface having a microstructure, wherein the microstructure is formed through the use of a microstructured molding tool;
- and
- wherein the polymeric member comprises a shape memory polymer, the shape memory
- polymer comprising a copolymer network comprising the reaction product of a free radically polymerizable siloxane having greater than one functional free radically polymerizable group and at least one (meth)acrylate monomer, wherein the at least one
- (meth)acrylate monomer, when homopolymerized, forms a homopolymer having a glass
- transition temperature, a melting temperature, or both greater than about 40° C.
An article, comprising:
- a polymeric member including a microstructured surface, wherein the microstructured surface includes a surface feature that is not visible to an unaided eye, and wherein the microstructure is formed through the use of a microstructured molding tool;
- and
- wherein the polymeric member includes a shape memory polymer.
An article, comprising:
- a polymeric member including a microstructured surface, wherein the microstructured surface includes a surface feature that is not visible to an unaided eye, and wherein the microstructure is formed through the use of a microstructured molding tool;
- and
- wherein the polymeric member includes a shape memory polymer, the shape memory polymer comprising a copolymer network comprising the reaction product of (meth)acryloxyurea siloxane and isobornyl acrylate.
An article comprising a shape memory polymer having a microstructured surface, wherein the microstructure is formed through the use of a microstructured molding tool, and comprising a copolymer network, the copolymer network comprising the reaction product of a free radically polymerizable siloxane having greater than one functional free radically polymerizable group and at least one (meth)acrylate monomer, wherein the at least one (meth)acrylate monomer, when homopolymerized, forms a homopolymer having a glass transition temperature greater than about 40° C.
Dependencies are inferred from the claim text.