Co‐polymerization analysis of thermosetting resins using 1H‐15N‐13C triple resonance NMR spectroscopy. Issue 5 (25th September 2012)

• Record Type: Journal Article
• Authors: Philbrook, Amy; Earnshaw, Scott; Easton, Christopher J.; Keniry, Max A.; Latter, Melissa J.
• Is Part Of: Journal of applied polymer science. Volume 128:Issue 5(2013:Jun. 05)
• Page Start: 3375
• Page End: 3381
• Publication Date: 2012-09-25
• Subjects: Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.38516
• Languages: English
• ISSNs: 0021-8995

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p> 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. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013</p> </abstract>