Gel-State NMR Investigation of Crosslinked Poly(methyl methacrylate) Incorporating C-13 Labeled Ethylene Glycol Dimethacrylate
Polymers and High Performance Materials
C-13 labeled ethylene glycol dimethacrylate (EGDMA) was used to form labeled crosslinked PMMA and model 13C labeled pendant double bond copolymers. Solution NMR was possible on solvent-swollen samples containing less than 0.5% by weight EGDMA. Spectra confirm significant amounts of singly reacted EGDMA in fully polymerized networks. Peaks arising from the two most likely stereochemical triads (syndi- and heterotactic) were identified but no evidence of cyclic species was observed. Labeled EGDMA allowed observation of the crosslink site at concentrations as low as 0.02 wt-% EGDMA.
Mathias, L. J.,
Redfearn, R. D.,
(1999). Gel-State NMR Investigation of Crosslinked Poly(methyl methacrylate) Incorporating C-13 Labeled Ethylene Glycol Dimethacrylate. Macromolecular Symposia, 141, 47-55.
Available at: http://aquila.usm.edu/fac_pubs/4769