Poly(aryl ether)'s are a subclass of polymers known as engineering plastics.  They demonstrate properties such as thermal and chemical resistance, and good dielectric and mechanical capabilities.  In previous work, a difluoro monomer, 4,4'-difluorophenyl, difluoromethane was polymerized with two aromatic diols using nucleophilic aromatic substitution to produce the polymer.  Cesium fluoride has been used as a base for this reaction in previous work, but the results were hard to reproduce.  The purpose of this work is to polymerize these polymers using the more traditional base, potassium carbonate.  Specifically, the reaction will be run again using the difluoro monomer, either Bisphenol A or Bisphenol AF in either NMP or DMPU as the solvent.  To determine the properties of the polymers and compare them, thermo-gravimetric analysis will be used to determine thermal stability, differential scanning calorimetry will be used to determine the glass transition temperatures (Tg ), and gel permeation chromatography coupled with multi-angle light scattering will be used to determine molecular weights.

Synthesis and polymerization of a partially fluorinated monomer

247th National Meeting (2014)

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