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Air-stable alkylborane initiation as a toolkit to drive radical reactions in a diverse set of polymer applications
Dissertation   Open access

Air-stable alkylborane initiation as a toolkit to drive radical reactions in a diverse set of polymer applications

Olivia R. Wilson
Doctor of Philosophy (Ph.D.), Drexel University
Jun 2022
DOI:
https://doi.org/10.17918/00001356
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Abstract

Air-stable alkylborane Materials Science Polymer Chemistry
This PhD thesis explored the utility of air-stable, alkylborane-amine complex initiation as a synthetic toolkit for oxygen mediated and room temperature polymerization to assemble diverse, polymeric materials with macromolecular control. The first aim of this thesis demonstrates alkylborane initiated thiol-ene click chemistry as a method for rapid and in situ, chemically triggered initiation of highly loaded and thick nanocomposites. The second aim introduces alkylborane initiation of thiol-yne polymerization for synthesis of reprocessable networks toward covalent adaptable composites. The third aim illustrates a versatile adhesion platform for low-surface energy polymers through alkylborane initiated graft polymerization to substrate surfaces. The fourth aim elucidates mechanistic features of alkylborane initiated reversible addition-fragmentation chain transfer (AI-RAFT) polymerization. Through these aims, complementary radical chemistry mechanisms initiated through alkylborane-amine complexes are developed such that polymer synthesis is oxygen tolerant and conducted at room temperature.

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