SYMPOSIA PAPER Published: 01 January 1979
STP36929S

Carbon-13 and Proton Nuclear Magnetic Resonance Spectroscopy of Thermosetting Polymers; Analysis of Tetraglycidyl Methylenedianiline/Diaminodiphenylsulfone Formulations

Source

The proton nuclear magnetic resonance (NMR) spectrum of a tetraglycidyl methylenedianiline/diaminodiphenylsulfone (TGMDA/DDS) mixture contains regions suitable for the quantitative determination of the resin-to-curing agent ratio. This ratio, expressed in parts curing agent per hundred parts resin (phr), may be found from a simple expression relating the areas of the two aromatic proton signal regions. Preliminary results obtained on replicate samples of five known formulations were satisfactory with respect to reproducibility, but showed a -2 phr systematic error at curing agent contents above 30 phr. The method is undergoing refinement.

The carbon-13 NMR spectrum of these formulations also is suitable for quantitative analysis, but a procedure has not yet been developed.

Author Information

Poranski, CF
Naval Research Laboratory, Washington, D.C.
Moniz, WB
Naval Research Laboratory, Washington, D.C.
Price: $25.00
Contact Sales
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Developed by Committee: D30
Pages: 553–565
DOI: 10.1520/STP36929S
ISBN-EB: 978-0-8031-4743-0
ISBN-13: 978-0-8031-4495-8