Microstructure Analysis of Acrylate-Methacrylate Copolymers by 13C Nuclear Magnetic Resonance Spectroscopy
Polymers and Rubbers
Published Online: 15 JUN 2010
Copyright © 2000 John Wiley & Sons, Ltd. All rights reserved.
Encyclopedia of Analytical Chemistry
How to Cite
Matlengiewicz, M. 2010. Microstructure Analysis of Acrylate-Methacrylate Copolymers by 13C Nuclear Magnetic Resonance Spectroscopy. Encyclopedia of Analytical Chemistry. .
- Published Online: 15 JUN 2010
Microstructure of acrylate-methacrylate copolymers can be determined in detail by means of 13C nuclear magnetic resonance (NMR) spectroscopy. Several signals in the 13C NMR spectra of such copolymers are sensitive to compositional and conformational differences in the macromolecular chain. However, only the carbonyl and β-CH2 carbons from the main chain provide complete and complementary information on distribution of configurational–compositional sequences, since only these two carbons are present in all (meth)acrylate units. Carbonyl signal is the source of information on distribution of odd sequences, usually up to configurational–compositional pentads. Complementary information, on distribution of even sequences, can be derived from the signal of β-CH2 carbons of the main chain. Spectral simulation can verify the signal assignment to respective sequences and incremental calculations of the chemical shifts of individual sequences were found to be useful for both carbonyl and methylene signal.
- acrylic (co)polymers;
- 13C NMR spectroscopy;
- sequence distribution