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Gel‐state NMR investigation of crosslinked poly(methy1 methacrylate) incorporating 13C labeled ethylene glycol dimethacrylate
Author(s) -
Mathias Lon J.,
Steadman Scott,
Anderson Kelly,
Davis Rick,
Jarrett William,
Redfearn Richard D.,
Bunn Alan
Publication year - 1999
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19991410106
Subject(s) - ethylene glycol dimethacrylate , polymer chemistry , ethylene glycol , methacrylate , solvent , copolymer , polymerization , carbon 13 nmr , ethylene , chemistry , materials science , polymer , organic chemistry , catalysis , methacrylic acid
13 C labeled ethylene glycol dimethacrylate (EGDMA) was used to form labeled crosslinked PMMA and model 13 C 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.