ISSN:
0021-8995
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
To help explain the mechanism of rubber reinforcement, studies of equilibrium adsorption from benzene solution of several polyisobutylenes and of a butyl rubber onto a high abrasive furnace black and other fillers were made. The adsorption is essentially physical in nature. On a weight basis, it decreases with increasing temperature in the range 25-75°C., is unaffected by unsaturation of the polymer, and increases with concentration in the range 0.25-1% for the lower molecular weight polymers and with increasing molecular weight (but above about 500,000 the effect is small). Adsorption of the higher molecular weight polymers is unaffected by concentration. Adsorption by the more polar, oxygenated channel blacks or by the highly polar, inorganic Hi-Sil is negligible. The higher molecular weight species are preferentially adsorbed to such an extent that apparently reliable molecular weight distribution curves can be obtained from these simple equilibrium experiments. Milling studies show that a high molecular weight polymer can be softened by a filler.
Additional Material:
18 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1960.070030704
