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      Real time NMR analyses of phenolic resin reactions

      Woolley, Samuel Lindsay
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      Woolley, S. L. (2008). Real time NMR analyses of phenolic resin reactions (Thesis, Master of Science (MSc)). The University of Waikato, Hamilton, New Zealand. Retrieved from https://hdl.handle.net/10289/3936
      Permanent Research Commons link: https://hdl.handle.net/10289/3936
      Abstract
      The current investigation presents the development and application of a Rapid NMR acquisition method, capable of identifying transient species and quantitatively monitoring their changes in real time during an in situ phenolic resin preparation. This quantification was only possible after the determination of phenolic resin relaxation times (T1) and nuclear Overhauser enhancements (NOE).

      Rapid NMR spectra were recorded with an inter-pulse delay time of 0.6 s and broadband decoupling, which resulted in the acquisition of sequential qualitative spectra at 2.5 min intervals. The obtained qualitative spectral data were then converted into quantitative spectral data via the derived cross calibration (fc) and NOE (η) factors, resulting in quantitative reaction profiles for the phenoic resin species under investigation.

      Extension of this work will allow the effects of varying synthesis parameters (i.e. temperature, pH, stoichiometry, catalyst type, etc.) on the final structure and hence on the final physical properties of the resin to be determined and inevitably leading to the development of new, more innovative and cost-effective resins.
      Date
      2008
      Type
      Thesis
      Degree Name
      Master of Science (MSc)
      Publisher
      The University of Waikato
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      All items in Research Commons are provided for private study and research purposes and are protected by copyright with all rights reserved unless otherwise indicated.
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      • Masters Degree Theses [2387]
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