Event Title

Exploring Postpolymerization Modification of Reactive Polymers

Research Mentor(s)

Larsen, Michael B.

Description

Postpolymerization modification – the chemical modification of organic macromolecules – is an important aspect of polymer science. It allows for functional groups to be added to macromolecules that are unobtainable by direct polymerization as well as easy modification of reactive polymers to create materials with diverse properties and functionality. To exemplify the power of this approach, we will present two ongoing projects in our group. In the first, synthesis of activated polyacrylamides through the introduction of two tert-butyloxycarbamate groups to an amide monomer followed by light-mediated radical polymerization will be presented. Characterization of these activated polymers and their reactivity toward an array of nucleophiles under mild conditions demonstrates their ability to be easily modified. The second project involves modification of the carbodiimide functional group by addition of Meldrum’s acid. Findings on the small molecule chemistry of this reaction will be presented as well as their application to macromolecules. Ultimately, we hope to create a covalent adaptable network from this functionalized polymer which will combine the durability of a thermoset with the recyclability of a thermoplastic. Further studies on these two methods of modifications are still in progress.

Document Type

Event

Start Date

15-5-2019 9:00 AM

End Date

15-5-2019 5:00 PM

Location

Carver Gym (Bellingham, Wash.)

Department

Chemistry

Genre/Form

student projects, posters

Subjects – Topical (LCSH)

Polyacrylamide--Synthesis; Carbodiimides--Synthesis

Type

Image

Rights

Copying of this document in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this document for commercial purposes, or for financial gain, shall not be allowed without the author’s written permission.

Language

English

Format

application/pdf

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May 15th, 9:00 AM May 15th, 5:00 PM

Exploring Postpolymerization Modification of Reactive Polymers

Carver Gym (Bellingham, Wash.)

Postpolymerization modification – the chemical modification of organic macromolecules – is an important aspect of polymer science. It allows for functional groups to be added to macromolecules that are unobtainable by direct polymerization as well as easy modification of reactive polymers to create materials with diverse properties and functionality. To exemplify the power of this approach, we will present two ongoing projects in our group. In the first, synthesis of activated polyacrylamides through the introduction of two tert-butyloxycarbamate groups to an amide monomer followed by light-mediated radical polymerization will be presented. Characterization of these activated polymers and their reactivity toward an array of nucleophiles under mild conditions demonstrates their ability to be easily modified. The second project involves modification of the carbodiimide functional group by addition of Meldrum’s acid. Findings on the small molecule chemistry of this reaction will be presented as well as their application to macromolecules. Ultimately, we hope to create a covalent adaptable network from this functionalized polymer which will combine the durability of a thermoset with the recyclability of a thermoplastic. Further studies on these two methods of modifications are still in progress.