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Stoichiometric analysis of hydrogen bonding interactions in a mixture of cross-linking resin monomers

Published

Author(s)

Seungwan Ryu, Xiaohui Liu, Ying Jin, Jirun Sun, Young Jong Lee

Abstract

We investigate multiple hydrogen bonding interactions in a binary mixture of cross-linking resin monomers: urethane dimethacrylate (UDMA) and triethylene glycol-divinylbenzyl ether (TEG-DVBE). We analyze infrared (IR) absorption spectra observed at various mixture compositions to determine the relative equilibrium constants among key hydrogen bonding formations. The amount of free and hydrogen-bonded carbonyl groups determined by semi-analytical peak fitting is consistent with a simplified stoichiometric model containing two UDMA acceptor groups (carbonyl and alkoxy oxygens) and one TEG-DVBE acceptor group (ether oxygen). The stoichiometric model is further supported by the peak fitting of the hydrogen-bonded amine stretching band. These results suggest that inter-association between UDMA and TEG-DVBE is non-negligible compared to UDMA self-association. Quantitative information on monomer interactions can provide insight into the copolymerization reaction mechanism of this resin mixture.
Citation
Physical Chemistry Chemical Physics
Volume
8

Keywords

hydrogen bonding, IR spectroscopy

Citation

Ryu, S. , Liu, X. , Jin, Y. , Sun, J. and Lee, Y. (2018), Stoichiometric analysis of hydrogen bonding interactions in a mixture of cross-linking resin monomers, Physical Chemistry Chemical Physics, [online], https://doi.org/10.1039/c8ra02919a (Accessed May 26, 2024)

Issues

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Created June 26, 2018, Updated October 12, 2021