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Full-Text Articles in Physical Sciences and Mathematics
Time-Lapse Polymerizations Triggered By Ph Clock Reactions, Elizabeth Jee
Time-Lapse Polymerizations Triggered By Ph Clock Reactions, Elizabeth Jee
LSU Doctoral Dissertations
The theme of this work is time-lapse polymerizations triggered by pH clock reactions. The first chapter is the introduction and gives a long overview of the different chemistries studied here. The second chapter focuses on the bromate-sulfite clock reaction. Based on some simplified and accepted reaction equations for the bromate-sulfite clock. We presumed it may be possible to increase the pH of the solution via ammonia addition and hinder or significantly reduce the reactivity of the clock reagents, thus creating a storage stable reaction. Adding a polymer system that would not crosslink until the solution became acidic would have created …
Thiol-Acrylate Polymerization Kinetics And Applications In Microfluidics, Michael Perrin Tullier
Thiol-Acrylate Polymerization Kinetics And Applications In Microfluidics, Michael Perrin Tullier
LSU Doctoral Dissertations
The reaction kinetics and some applications in the field of microfluidics for thiol-acrylate Michael addition polymerizations using multifunctional monomers have been researched and are presented here. The polymerization rate constants for base-catalyzed systems were found to increase with increasing thiol and acrylate functionality, which was attributed to the intramolecular interactions between functional groups. The nucleophile-initiated thiol-acrylate Michael addition polymerization kinetics were monitored via FTIR, and it was determined that the increase in the rate of reaction in these multifunctional systems was significantly less dramatic than the increase observed in monofunctional systems. While no radical polymerization was observed during most typical …