Analysis of the monomer sequence distribution in alternating acrylonitrilestyrene copolymers by 13C-NMR

1981 ◽  
Vol 19 (4) ◽  
pp. 211-216 ◽  
Author(s):  
Koichiro Arita ◽  
Teruo Ohtomo ◽  
Yasuko Tsurumi
Keyword(s):  
13C Nmr ◽  
Sequence Distribution ◽  
Monomer Sequence

scholarly journals 13C-NMR of Polyisoprenes: Sequence Distribution of cis-1,4 and trans-1,4 Units

1975 ◽  
Vol 7 (2) ◽  
pp. 264-266 ◽  
Author(s):  
Yasuyuki Tanaka ◽  
Hisaya Sato ◽  
Takeshi Seimiya
Keyword(s):  
13C Nmr ◽  
Sequence Distribution

Monomer Sequence Distribution in Butadiene Styrene Copolymers

1970 ◽  
Vol 43 (5) ◽  
pp. 1138-1153 ◽  
Author(s):  
V. D. Mochel ◽  
B. L. Johnson
Keyword(s):  
Aromatic Proton ◽  
Analog Computer ◽  
Curve Analysis ◽  
Nmr Spectrum ◽  
Sequence Distribution ◽  
Monomer Sequence ◽  
Styrene Copolymers ◽  
Overlapped Peaks ◽  
Sequence Distributions ◽  
Butadiene Styrene

Abstract A method is described for determining styrene sequence distribution in butadiene-styrene copolymers. An analog computer is used to resolve overlapped peaks in the styrene aromatic proton NMR spectrum. In n-BuLi copolymers a quite quantitative distinction can be made between “short” sequences, containing two and three styrene units, and “long” sequences, containing more than three units. With this method it is possible to determine experimentally the styrene-centered triad distributions and approximate styrene sequence distributions of butadiene—styrene copolymers. Agreement between calculated and NMR-curve analysis results is good, especially for n-butyllithium-catalyzed butadiene—styrene copolymers.

Sequence distribution of poly(ether-sulfone)/poly(ether-ketone) copolymers by mass spectrometry and 13C NMR

1995 ◽  
Vol 196 (2) ◽  
pp. 499-511 ◽  
Author(s):  
Giorgio Montaudo ◽  
Maurizio S. Montaudo ◽  
Concetto Puglisi ◽  
Filippo Samperi
Keyword(s):  
Mass Spectrometry ◽  
13C Nmr ◽  
Sequence Distribution ◽  
Ether Ketone
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