The influence of Intermolecular Action on the Dynamic Fatigue of Rubbers

1959 ◽  
Vol 32 (2) ◽  
pp. 454-462
Author(s):  
V. E. Gul ◽  
D. L. Fedyukin ◽  
B. A. Dogadkin
Keyword(s):  
Functional Groups ◽  
Fatigue Resistance ◽  
Convenient Method ◽  
Physical Effect ◽  
Optimum Composition ◽  
Mechanical Loss ◽  
Freeze Resistance ◽  
Dynamic Fatigue

Abstract The determination of the physical effect of softeners by an investigation of their influence on the swelling of vulcanizates is a convenient method for investigating the optimum composition of a compound which will produce given properties in the cured stock. This makes possible the improvement of such important properties of vulcanizates as fatigue resistance, mechanical loss, freeze resistance and others by using softeners with the appropriate functional groups.

Sorption of Lead by the Selective Ion Exchanger Ostsorb DETA

1992 ◽  
Vol 57 (7) ◽  
pp. 1393-1404 ◽  
Author(s):  
Ladislav Svoboda ◽  
Jan Uhlíř ◽  
Zdeněk Uhlíř
Keyword(s):  
Phosphoric Acid ◽  
Aqueous Solutions ◽  
Functional Groups ◽  
Ion Exchanger ◽  
Preconcentration Procedure ◽  
Bead Cellulose

The properties of Ostsorb DETA, a selective ion exchanger based on modified bead cellulose with chemically bonded diethylenetriamine functional groups, were studied, and its applicability to the preconcentration of trace amounts of lead from aqueous solutions was verified. The conditions of the preconcentration procedure in the column and batch modes were optimized for this purpose. The results obtained were applied to the determination of lead in phosphoric acid.

Mechanochemical Phenomena in Polymers. II. The Effects of Initiators and Inhibitors of Chain Processes

1963 ◽  
Vol 36 (2) ◽  
pp. 480-487
Author(s):  
E. V. Reztsova ◽  
B. T. Kipkina ◽  
G. L. Slonimskii
Keyword(s):  
Free Radicals ◽  
Fatigue Resistance ◽  
Substantial Effect ◽  
Chemical Bonds ◽  
Chain Processes ◽  
Radical Processes ◽  
Effect Of Inhibitors ◽  
Dynamic Fatigue

Abstract 1. The substantial effect of inhibitors and initiators of chain radical processes on the change in the properties of rubbers in milling, as well as on the resistance of vulcanizates to fatigue, has been shown. This indicates a mechanochemical mechanism for processing of polymers and in the fatigue of elastomers. The act of mechanical scission of chemical bonds, with the formation of free radicals which initiate the secondary chain processes, rests on these processes. 2. The possibility has been shown of regulating the properties of polymers during processing, and also of increasing the dynamic fatigue resistance of vulcanizates by incorporating small quantities of additives active in regard to free radicals.

Determination of Hydrocarbon Functional Groups by Infrared Spectroscopy

1952 ◽  
Vol 24 (4) ◽  
pp. 612-618 ◽  
Author(s):  
S. H. Hastings ◽  
A. T. Watson ◽  
R. B. Williams ◽  
J. A. Anderson
Keyword(s):  
Infrared Spectroscopy ◽  
Functional Groups

A rapid, convenient method for the determination of hexosamines as O-acetylated-O-methyloximes by gas-liquid chromatography

1979 ◽  
Vol 75 ◽  
pp. C21-C23 ◽  
Author(s):  
Thomas P. Mawhinney ◽  
Milton S. Feather ◽  
J.Ricardo Martinez ◽  
Guilio J. Barbero
Keyword(s):  
Liquid Chromatography ◽  
Convenient Method ◽  
Gas Liquid Chromatography
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