13C NMR Spectroscopy Studies of Branching and Sequence Distribution in Copolymers of Vinyl Acetate andn-Butyl Acrylate Prepared by Semibatch Emulsion Copolymerization

2001 ◽  
Vol 34 (4) ◽  
pp. 817-829 ◽  
Author(s):  
David Britton ◽  
Frank Heatley ◽  
Peter A. Lovell
Keyword(s):  
Nmr Spectroscopy ◽  
Vinyl Acetate ◽  
13C Nmr ◽  
Butyl Acrylate ◽  
13C Nmr Spectroscopy ◽  
Sequence Distribution ◽  
Emulsion Copolymerization ◽  
Spectroscopy Studies

Solid-state 13C NMR spectroscopy studies of xylans in the cell wall of Palmaria palmata (L. Kuntze, Rhodophyta)

2003 ◽  
Vol 338 (15) ◽  
pp. 1559-1569 ◽  
Author(s):  
Marc Lahaye ◽  
Corinne Rondeau-Mouro ◽  
Estelle Deniaud ◽  
Alain Buléon
Keyword(s):  
Cell Wall ◽  
Solid State ◽  
Nmr Spectroscopy ◽  
13C Nmr ◽  
13C Nmr Spectroscopy ◽  
Palmaria Palmata ◽  
Spectroscopy Studies ◽  
Solid State 13C Nmr

Latex-state 13C-NMR spectroscopy for poly(butyl acrylate)

2018 ◽  
Vol 297 (1) ◽  
pp. 133-139 ◽  
Author(s):  
Yusuke Iizuka ◽  
Yoshimasa Yamamoto ◽  
Seiichi Kawahara
Keyword(s):  
Nmr Spectroscopy ◽  
13C Nmr ◽  
Butyl Acrylate ◽  
13C Nmr Spectroscopy

Sequence Distribution of cis-1,4- and trans-1,4-Units in Polyisoprenes

1976 ◽  
Vol 49 (5) ◽  
pp. 1269-1275
Author(s):  
Y. Tanaka ◽  
H. Sato
Keyword(s):  
Nmr Spectroscopy ◽  
13C Nmr ◽  
Nmr Spectra ◽  
13C Nmr Spectroscopy ◽  
13C Nmr Spectra ◽  
Sequence Distribution ◽  
Isomeric Structures ◽  
Nmr Signals

Abstract Recently 13C NMR spectroscopy has been successfully applied to investigate the sequence distribution of 1,2- and 1,4-units or cis-1,4- and trans-1,4-units in polybutadienes. As for polyisoprenes, however, few investigations have been made on the sequence distribution of isomeric structures using this technique, although Duch and Grant have assigned the 13C NMR signals of cis-1,4- and trans-l,4-homopolyisoprenes. In previous work we have found new signals attributed to cis-trans linkages in the 13C NMR spectra of cis-trans isomerized polyisoprenes and assigned the signals using diad sequences of cis-1,4- and trans-l,4-units. We have also studied the 13C NMR spectra of hydrogenated polyisoprenes containing various amounts of 1,4- and 3,4-units and the sequence distribution of 1,4- and 3,4-units were discussed for n-BuLi-catalyzed polyisoprenes. In this work we have investigated the sequence distribution of chicle polyisoprene and cis-trans isomerized 1,4-polyisoprenes containing various ratios of cis-1,4- and trans-1,4-units.

13C-NMR spectroscopy studies of humic substances in subtropical perhumid montane forest soil

2012 ◽  
Vol 17 (6) ◽  
pp. 458-467 ◽  
Author(s):  
Tay-Lung Chung ◽  
Jenn-Shing Chen ◽  
Chih-Yu Chiu ◽  
Guanglong Tian
Keyword(s):  
Nmr Spectroscopy ◽  
Forest Soil ◽  
Humic Substances ◽  
13C Nmr ◽  
13C Nmr Spectroscopy ◽  
Montane Forest ◽  
Spectroscopy Studies

Microstructure of methyl methacrylate/tert-butyl acrylate copolymer characterized by 13C NMR spectroscopy

2009 ◽  
Vol 64 (3) ◽  
pp. 259-273 ◽  
Author(s):  
Piotr Bujak ◽  
Marek Matlengiewicz ◽  
Marcin Pasich ◽  
Norbert Henzel
Keyword(s):  
Nmr Spectroscopy ◽  
Methyl Methacrylate ◽  
13C Nmr ◽  
Butyl Acrylate ◽  
13C Nmr Spectroscopy ◽  
Tert Butyl ◽  
Acrylate Copolymer
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