Correlation of 13C NMR Analysis and Physical Testing Results of Natural Rubber

2003 ◽  
Vol 76 (1) ◽  
pp. 212-219 ◽  
Author(s):  
Dallas D. Parker ◽  
J. L. Koenig ◽  
Makio Mori
Keyword(s):  
Natural Rubber ◽  
13C Nmr ◽  
Nmr Analysis ◽  
Testing Methods ◽  
13C Nmr Analysis ◽  
Wide Range ◽  
Physical Testing ◽  
Cure Time ◽  
Small Change ◽  
Cure Temperature

Abstract The methods of solid-state 13C NMR and physical testing were used to examine carbon black filled natural rubber samples. The rubber samples were vulcanized under varying parameters of sulfur loading, cure times, and cure temperature. At constant cure time and cure temperature, the two testing methods correlate well over a wide range of sulfur concentrations. Varying cure time and cure temperature produced large changes in the mechanical testing results but small change in the 13C NMR analysis of the sulfur vulcanizates.

Solid State 13C NMR Analysis of Vulcanized Rubbers XVI. The Competitive Vulcanization of Natural Rubber and Polybutadiene Blends

1997 ◽  
Vol 70 (2) ◽  
pp. 231-242 ◽  
Author(s):  
B. Klei ◽  
J. L. Koenig
Keyword(s):  
Solid State ◽  
Natural Rubber ◽  
13C Nmr ◽  
Nmr Spectra ◽  
Sampling Technique ◽  
Nmr Analysis ◽  
Trans Isomerization ◽  
13C Nmr Analysis ◽  
Elastomer Blend ◽  
Solid State 13C Nmr

Abstract Solid state 13C NMR was used to study the competitive vulcanization of blends of natural rubber and high cis polybutadiene. A NMR sampling technique utilizing the stacked homopolymers was developed that helps to determine the spectral differences occurring due to competitively vulcanizing an elastomer blend. The small amount of interfacial crosslinking was expected to be undetectable but has been tentatively observed. Concentration of crosslinks at the interface may occur from limited solubility of curative species in both rubbers. The NMR spectra also showed inhibition of cis-trans isomerization in natural rubber with addition of polybutadiene.

scholarly journals Dynamic 13C NMR analysis of oxidative metabolism in the in vivo canine myocardium.

1993 ◽  
Vol 268 (35) ◽  
pp. 26296-26301
Author(s):  
P M Robitaille ◽  
D P Rath ◽  
A M Abduljalil ◽  
J M O'Donnell ◽  
Z Jiang ◽  
...  
Keyword(s):  
13C Nmr ◽  
Oxidative Metabolism ◽  
Nmr Analysis ◽  
13C Nmr Analysis ◽  
Canine Myocardium

ChemInform Abstract: Synthesis and 1H, 13C NMR Analysis of Some Substituted 1,2,3,4-Tetrahydroisoquinolines.

ChemInform ◽  
1989 ◽  
Vol 20 (52) ◽  
Author(s):  
A. F. IBANEZ ◽  
G. B. YACULIANO ◽  
G. Y. MOLTRASIO IGLESIAS
Keyword(s):  
13C Nmr ◽  
Nmr Analysis ◽  
13C Nmr Analysis

1,6- and 1,7-naphthyridinesIII.13C-NMR analysis of some hydroxy derivatives

2002 ◽  
Vol 39 (2) ◽  
pp. 341-346 ◽  
Author(s):  
M. Mercedes Blanco ◽  
Graciela Buldain ◽  
Celia B. Schapira ◽  
Isabel Perillo
Keyword(s):  
13C Nmr ◽  
Nmr Analysis ◽  
13C Nmr Analysis

13C NMR analysis of podophyllotoxin and some of its derivatives

1980 ◽  
Vol 19 (7) ◽  
pp. 1527-1530 ◽  
Author(s):  
Sebastiáo F. Fonseca ◽  
Edmundo A. Rúveda ◽  
James D. McChesney
Keyword(s):  
13C Nmr ◽  
Nmr Analysis ◽  
13C Nmr Analysis

13C NMR analysis of the antitumor antibiotics daunorubicin and adriamycin

1976 ◽  
Vol 17 (37) ◽  
pp. 3349-3350 ◽  
Author(s):  
A. Arnone ◽  
G. Fronza ◽  
R. Mondelli ◽  
A. Vigevani
Keyword(s):  
13C Nmr ◽  
Antitumor Antibiotics ◽  
Nmr Analysis ◽  
13C Nmr Analysis

13C NMR Analysis of Soot Produced from Model Compounds and a Coal

2001 ◽  
Vol 15 (4) ◽  
pp. 961-971 ◽  
Author(s):  
Mark S. Solum ◽  
Adel F. Sarofim ◽  
Ronald J. Pugmire ◽  
Thomas H. Fletcher ◽  
Haifeng Zhang
Keyword(s):  
13C Nmr ◽  
Nmr Analysis ◽  
Model Compounds ◽  
13C Nmr Analysis
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