Heats of Adsorption and Molecular Configuration. The Pentanes on Carbon Black

1950 ◽  
Vol 72 (1) ◽  
pp. 40-42 ◽  
Author(s):  
R. A. Beebe ◽  
G. L. Kington ◽  
M. H. Polley ◽  
W. R. Smith
Keyword(s):  
Carbon Black ◽  
Molecular Configuration ◽  
Heats Of Adsorption

The Mechanism of Reinforcement

1945 ◽  
Vol 18 (2) ◽  
pp. 286-291 ◽  
Author(s):  
G. Goldfinger
Keyword(s):  
Carbon Black ◽  
Pigment Particle ◽  
Molecular Configuration ◽  
Stress Strain ◽  
Fundamental Study ◽  
Rubber Stock

Abstract In the fundamental study of the influence of reinforcing pigments, particularly carbon black on rubber, one of the great experimental difficulties is to establish the stress-strain properties of that fraction of the rubber stock which is between the pigment particles, and whose deformation, influenced by the presence of the pigment, is the quantity desired. This paper shows that it is not justifiable to assume that the rubber between pigment particles is equivalent in properties to the original gum stock without pigment, because the addition of pigment induces fractionation of the rubber in such a manner as to concentrate preferentially one molecular configuration around the pigment particle, and hence leave the rubber richer in some other configuration in the spaces between pigment particles.

Heats of Adsorption on Carbon Black. II

1947 ◽  
Vol 69 (10) ◽  
pp. 2294-2299 ◽  
Author(s):  
R. A. Beebe ◽  
M. H. Polley ◽  
W. R. Smith ◽  
C. B. Wendell
Keyword(s):  
Carbon Black ◽  
Heats Of Adsorption

Adsorption and Calorimetric Investigations on Carbon Black Surfaces. III. Immersion Heats in Model Elastomers and Isosteric Heats of Adsorption of C-4 Hydrocarbons

1972 ◽  
Vol 45 (1) ◽  
pp. 117-128 ◽  
Author(s):  
W. H. Wade ◽  
M. L. Deviney ◽  
W. A. Brown ◽  
M. H. Hnoosh ◽  
D. R. Wallace
Keyword(s):  
Carbon Black ◽  
Physical Adsorption ◽  
High Viscosity ◽  
High Energy ◽  
Heat Evolution ◽  
Carbon Substrate ◽  
Heats Of Adsorption ◽  
Adsorption Sites ◽  
Heat Of Wetting ◽  
Black Surface

Abstract The heats of immersion of U-1 channel and SAF, SPF, HAF-HS, and HAF furnace blacks have been measured at 25° C in three isoprenoid olefins and four liquid elastomers of the polybutadiene, polyisoprene, and SBR types. An extensive microcalorimeter redesign was necessary because of the high viscosity of these latter fluids. The immersion heats observed with the liquid elastomers were similar to n-decane immersion heats and there was little evidence for specific interactions between these liquids and any of the blacks. The possibility that the very high structure SPF black gives slightly enhanced immersion heats should be further investigated. Since only integral immersion heats could be measured with the non-volatile liquid elastomers, the possibility is not ruled out that specific, relatively high-energy interactions may occur between the adsorbate and a very small fraction of the black surface. The similarities between the immersion heats with n-decane and the liquid elastomers indicate that almost all of the carbon black surface is accessible to the polymer segments. It appears that the rate of heat evolution may be considered a measure of the rate of attainment of intimate molecular contact between the liquid and carbon substrate. The enhancement in heat of wetting with increasing chain length over the C6 to C16 n-alkane series reported by others with a highly uniform, graphitized black was not observed with HAF. Isosteric heats of adsorption of n-butane and butene-1 at low surface coverages on several carbon blacks were calculated from adsorption isotherms obtained with a precision microgravimetric system. The isosteric heats as a function of coverage curves were typical of those expected for heterogeneous surfaces and reflected the presence of high energy physical adsorption sites at low coverages (θ<0.1).

HEATS OF ADSORPTION OF KRYPTON ON HIGHLY GRAPHITIZED CARBON BLACK

1955 ◽  
Vol 33 (2) ◽  
pp. 305-313 ◽  
Author(s):  
C. H. Amberg ◽  
W. B. Spencer ◽  
R. A. Beebe
Keyword(s):  
Carbon Black ◽  
Graphitized Carbon Black ◽  
Adsorption System ◽  
Heats Of Adsorption ◽  
Graphitized Carbon ◽  
High Degree

Calorimetric heats have been determined at −183 °C. for the adsorption of krypton on a highly graphitized sample of carbon black. This adsorption system is of particular interest because of the extreme step-wise nature of the isotherm. Both the heat-coverage curve and the isotherm appear to be indicative of a high degree of homogeneity of the adsorbing surface.

scholarly journals Studies of adsorption of polychlorocarbons on carbon blacks by gas chromatography

1985 ◽  
Vol 2 (4) ◽  
pp. 219-228 ◽  
Author(s):  
E. V. Zagorevskaya ◽  
N. V. Ishchenko ◽  
A. V. Kiselev ◽  
N. V. Kovaleva
Keyword(s):  
Gas Chromatography ◽  
Carbon Black ◽  
Adsorption Properties ◽  
High Adsorption ◽  
Heats Of Adsorption ◽  
Carbon Blacks ◽  
Before And After ◽  
Retention Volumes ◽  
High Adsorption Capacity ◽  
Airborne Chemicals

Adsorption properties of carbon black before and after modification to polyhalogenohydrocarbons, including polyorganochlorine pesticides, have been investigated. It has been shown that graphitised thermal carbon blacks and carbochroms possess high adsorption capacity relative to the above compounds and can be used as supporting adsorbents to analyse these airborne chemicals. Modification raises the selectivity of adsorbents to the compounds being investigated and lowers retention volumes and heats of adsorption, which makes it possible to carry out thermal desorption of the accumulated species at lower temperatures.

Heats of adsorption on carbon black surfaces

1969 ◽  
Vol 73 (7) ◽  
pp. 2321-2326 ◽  
Author(s):  
P. A. Elkington ◽  
Geoffrey Curthoys
Keyword(s):  
Carbon Black ◽  
Heats Of Adsorption
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