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9075662 
Journal Article 
Compositional assignments of methyl methacrylate-vinylidenechloride copolymers by two dimensional NMR spectroscopy 
Brar, AS; Malhotra, M 
1999 
Yes 
European Polymer Journal
ISSN: 0014-3057 
PERGAMON-ELSEVIER SCIENCE LTD 
OXFORD 
35 
4 
631-638 
English 
WOS:000079184800011 
The compositional assignments of methyl methacrylate - vinylidene chloride copolymers prepared by the photopolymerization process was studied by 1H, 13C-NMR, 1H-13C-heteronuclear shift correlation NMR (HSQC) and by double quantum filtered homonuclear shift correlated spectroscopy (DQF-COSY). A 13C distortionless enhancement by polarization transfer (DEPT) spectrum was used to differentiate between the resonance signals of methoxy and the methylene units. Assignments to the methylene regions have been done up to the tetrad levels using 2D HSQC experiments. The geminal couplings in the methylene proton region is evident from the 2D-COSY experiments. © 1999 Elsevier Science Ltd. All rights reserved.