Effects of ozone oxidation on carbon black surfaces
- 397 Downloads
Surface effects of ozone treatment with a fluidized bed-type reactor on carbon black have been studied. It has been observed that the surface oxygen level is proportional to the total volume of ozone supplied per unit area of carbon black surface. The ozone treatment increases the acidity of the carbon black surface. A limiting pH value has been obtained at a surface oxygen concentration of around 6 at %. The surface oxygen introduced on the carbon black is most likely present as carboxylic acid groups as indicated by both high-resolution X-ray photoelectron spectroscopy and Fourier transform-infrared spectroscopy results. The ozone treatment of a carbon black decreases the tensile strength for a natural rubber (non-polar), but increases the tensile strength for a nitrile butadiene rubber (polar).
KeywordsOzone Tensile Strength Rubber Nitrile Carboxylic Acid
Unable to display preview. Download preview PDF.
- 1.H. Serizawa, T. Nakamura, M. Ito, K. Tanaka andA. Nomura,Polym. J. 15 (1983) 201.Google Scholar
- 2.T. Asakawa andK. Ogino,J. Coll. Interface Sci. 102 (1984) 348.Google Scholar
- 3.E. Papirer, J. B. Donnet, A. Vidal, S. Li andZ. Shi, in “ACS Rubber Division 131st Meeting”, Montreal, May 1987.Google Scholar
- 4.R. W. Coughlin, F. S. Ezra andR.N. Tan, in “Hydrophobic Surfaces”, edited by F. M. Fowkes (Academic Press, New York, 1969) p. 44.Google Scholar
- 5.W. Wang, A. Vidal, J. B. Donnet andM. J. Wang,KGK Kautschuk Gummi Kunststoffe 46 (1993) 933.Google Scholar
- 6.C. R. Kinney andL. D. Friedman,J. Am. Chem. Soc. 74, (1952) 57.Google Scholar
- 7.M. R. Cines,Can. Pat. 531 567, 9 October 1956.Google Scholar
- 8.E. Papirer, J. B. Donnet andA. Schultz,Carbon 5 (1967) 113.Google Scholar
- 9.M. Horvath, L. Bilitzky andJ. Huttner, in “Ozone”, edited by R. J. H. Clark (Elsevier, Amsterdam, 1985) p. 81.Google Scholar
- 10.I. Sutherland, D. M. Brewis, R. J. Heath andE. Sheng,Surf. Interface Anal. 17 (1991) 507.Google Scholar
- 11.E. Sheng, I. Sutherland, R. H. Bradley andP. K. Freakley,Eur. Polym. J. in press.Google Scholar