Actions for Functionalization-Induced Phase Transitions Driven By Lewis Acid-Base Adduct Formation In Polymer-Solvent Mixtures

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Functionalization-Induced Phase Transitions Driven By Lewis Acid-Base Adduct Formation In Polymer-Solvent Mixtures

Author
Hilaire, Tylene
Published
[University Park, Pennsylvania] : Pennsylvania State University, 2021.
Physical Description
1 electronic document
Additional Creators
Bevilacqua, Philip
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Open Access.
Summary
The knowledge of polymer phase behavior in solution is critical for synthesis, purification, and characterization. However, fundamental knowledge of the Lewis adduct phase behavior involving polymers containing nucleophilic Lewis bases or electrophilic Lewis acids are lacking. Polymers with Lewis acid/base pendant groups that are capable of reversible bonding have garnered a lot of attention for applications to create thermal responsive materials and for catalysis. In this work, the phase behavior of the Lewis adducts formed by homopolymers containing a Lewis base, poly(diphenylphosphino styrene) (PDPPS), or a Lewis acid tri(pentaflurorphenyl)borane (BCF) was examined in detail. The Lewis acid/base quantities required for macrophase separation at room temperature was used to generate phase diagrams for this system. Incorporation of PDPPS into a diblock copolymer led to self-assembled micelles induced by Lewis acid/base functionalization. The reversible dynamic bonding nature of the Lewis adduct can be harnessed to potentially create responsive polymers in the future.
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Dissertation Note
M.S. Pennsylvania State University 2021.
Technical Details
The full text of the dissertation is available as an Adobe Acrobat .pdf file ; Adobe Acrobat Reader required to view the file.
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