Molecular Engineering of Smart Polymer Surfaces
Abstract
Two approaches for the development of smart functional polymer surfaces are described: surface-active end-functional block copolymers and monolayers with light-switchable surface properties. End-functional diblock copolymers of the type poly(styrene-b-dimethylsiloxane)-silane adsorb at the surface of a polystyrene matrix and deliver the silane group to the surface. When contacted with a polysiloxane gel, adhesion is promoted via an hydrosilylation reaction between the silane end group and residual vinyl functionality in the gel; when the surface is placed against poly(methyl methacrylate), release behavior is observed. Bonding to the latter substrate can be enhanced by replacing the silane functionality with a carboxylic acid. These modified substrates are the first examples of selective adhesives for polymeric materials. Theoretical and experimental studies of other model functional polymers have also been completed that establish an understanding of both the equilibrium and dynamic behavior of functional polymer surfaces. The second thrust of research concerns the assembly of azo-dye monomeric and polymeric monolayers that change molecular configuration and therefore surface properties when exposed to light. The two approaches under study constitute novel methods for the delivery of specific functional groups to polymer surfaces and impact a broad range of polymer technologies including adhesives, coatings, release and wetting.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 13, 1999
- Accession Number
- ADA369951
Entities
People
- Jeffrey T Koberstein
Organizations
- University of Connecticut