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- E-ISSN 2288-8985
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<TEX>$A^{13}$</TEX> CNMR Determination of Monomer Composition in EP Copolymers, EPB and EPDM Terpolymers
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1994, v.7 no.1, pp.91-102
Lee,
K., An,
S., Rhee,
J., Kweon,
J., &
Choi,
Y.
(1994). <TEX>$A^{13}$</TEX> CNMR Determination of Monomer Composition in EP Copolymers, EPB and EPDM Terpolymers. Analytical Science and Technology, 7(1), 91-102.
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Abstract
The monomer compositions in a series of propylene heterophasic copolymer, propylene random copolymer, propylene random terpolymer and ethylene-propylene-ENB terpolymer have been determined from <TEX>$^{13}C-NMR$</TEX> spectra. The simplified and highly resolved <TEX>$^{13}C-NMR$</TEX> spectra made it possible to assign unambiguousely and calculate the monomer composition. A complete sets of NMR chemical shift assignments and the way to measure the quantity of monomer are newly given in diverse polymers. Furthermore complete dyad, triad, tetrad and pentad distributions have been able to be determined. These NMR quantitative analytical results for monomer compostition have consistent with those from Infrared spectral data.
- keywords
- Polypropylene, <TEX>$^{13}C-NMR$</TEX>
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