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Sequence determination in MMA‐EMA copolymers by 13 C NMR
Author(s) -
Brar A. S.,
Saini A. K.
Publication year - 1986
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1986.070320425
Subject(s) - triad (sociology) , copolymer , carbon 13 , carbon 13 nmr , materials science , sequence (biology) , nuclear magnetic resonance , spectral line , resonance (particle physics) , polymer chemistry , analytical chemistry (journal) , chemistry , polymer , organic chemistry , physics , nuclear physics , atomic physics , psychology , biochemistry , astronomy , psychoanalysis
The 13 C nuclear magnetic resonance spectra of MMA‐EMA copolymers have been recorded and analyzed. The carbonyl carbon resonance region contains six resonating peaks due to its sensitivity to triad concentrations. From these signals, triad concentrations were determined and compared with calculated values based on Bernoullian and first‐order Markovian statistics. Molecular weights were determined by viscosity measurement method.