Abstract
1H-15N-13C correlation NMR spectroscopy techniques developed to identify and characterize co-polymer fragments in melamine-urea-formaldehyde (MUF) and phenol-urea-formaldehyde (PUF) model systems have been applied to industrially prepared MUF, PUF, and phenol-melamine-formaldehyde (PMF) resins. The NMR data confirm that co-polymers form in a commercially prepared MUF resin manufactured by Momentive Specialty Chemicals Pty. Ltd. Spectra from PUF model reactions were compared with those from a PUF resin and it was determined that PUF co-polymers did not form in the resin prepared using typical temperature and pH. Finally, NMR spectroscopy was used to identify and characterize PMF co-polymer bonds in a phenol-melamine- urea-formaldehyde (PMUF) resin prepared using a procedure from Momentive Specialty Chemicals Pty. Ltd. With these NMR techniques in hand, it is now possible to relate co-polymer structures to properties of commercial thermosets.
Original language | English |
---|---|
Pages (from-to) | 3375-3381 |
Number of pages | 7 |
Journal | Journal of Applied Polymer Science |
Volume | 128 |
Issue number | 5 |
DOIs | |
Publication status | Published - 5 Jun 2013 |