IRG 1: Engineered Multiblock Polymers

Block copolymers combine functional attributes of individual polymers in single macromolecules. They are most widely used as adhesives, asphalt modifiers, thermoplastic elastomers and clear packaging. While the ability of block copolymers to self-assemble into precise nanostructures is well established, few advanced technologies actually exploit these features. Yet, self-assembled block copolymers hold unparalleled potential for innovative solutions to current engineering challenges in, for example, biomedical, lithographic, and separation technologies. Multiblock polymers containing more than two chemically distinct segments (e.g., ABC, ABCA, ABCBA, ABCD, etc.) are ideal candidates for enabling such a rich array of sophisticated applications. However, establishing fundamental knowledge concerning the complex interplay between synthesis, structure, properties, and processing in these materials will be essential. Beginning with the development of new synthetic protocols for the efficient generation of multiblocks with wide ranging architectural and chemical diversity, this IRG will (i) establish strategies that allow for introduction of chemical functionality without compromising self-assembly, (ii) design multiblock architectures that favor mechanically robust molecular arrangements, and (iii) develop advanced coating and extrusion processes to implement multiblocks in practical processing operations. Supported by a foundation built on precision synthesis, inventive theory, state-of-the-art structural characterization, and innovative processing our vision is to elevate multiblock polymer science to the realm of advanced technology.

IRG 1 research areas:
Multidomain Aqueous Assemblies
Tailored Membrane Materials
Coating and Extrusion Processes

The principal investigators and their primary areas of expertise are:

• Frank Bates - Thermodynamics, scattering, synthesis
• Ed Cussler - Membrane separations, product design
• Lorraine Francis - Ceramic synthesis and processing, composites
• Marc Hillmyer, program leader - Polymer synthesis, characterization
• Efrosini Kokkoli - Biopolymers, targeted drug delivery
• Timothy Lodge - Polymer dynamics, solutions, scattering
• Christopher Macosko - Rheology, processing
• Dave Morse - Theory and modeling
• Ron Siegel - Hydrogel design and biomedical devices