Polyester Macromonomer Syntheses and Radical Copolymerization
Kinetics with Styrene
Posted on 2017-01-18 - 17:21
Short-chain polyester methacrylate
macromonomers with alkyl, tertiary
amine, carboxyl, and hydroxyl end-group functionalities are synthesized
by ring-opening polymerization and subsequent modification. Monomer
conversion and composition drift during batch radical copolymerizations
of (macro)monomer with styrene are tracked using the in situ NMR technique in both polar and nonpolar deuterated solvents at
80 °C. For experiments with initial methacrylate molar fraction fxMA = 0.2, the effects of end-group functionality,
solvent, and hydrogen bonding on relative reactivity are pronounced
for monomeric analogues of the macromonomers. However, the polyester
spacers significantly dilute these effects in macromonomer copolymerization,
as polyester type, length, and end-group functionality did not influence
copolymerization kinetics. Instead, the chemical identity up to several
units from the methacryloyl group is the most important indicator
of macromonomer relative reactivity.
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Rooney, Thomas
R.; Monyatsi, Otlaatla; Hutchinson, Robin A. (2017). Polyester Macromonomer Syntheses and Radical Copolymerization
Kinetics with Styrene. ACS Publications. Collection. https://doi.org/10.1021/acs.macromol.6b02297
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AUTHORS (3)
TR
Thomas
R. Rooney
OM
Otlaatla Monyatsi
RH
Robin A. Hutchinson