Autoradiographic Technique with Carbon14 in Rubber

Abstract

The autoradiograph technique making use of carbon14 is useful in studying the carbon black distribution in rubber. It is superior to the photomicrographic technique in studying carbon black dispersion in rubber. Autoradiographs of different carbon black-rubber mixes (tensile strengths varying from 300 to 3300 pounds per square inch) showed visible variations in the carbon black distribution which closely agree with the tensile strength data, whereas photomicrographs of the same mixes showed no differences among the various mixes. The autoradiographic technique is also useful in tracking down carbon black agglomeration in rubber.

Natural and Synthetic Rubbers

“…Chem., 24, 174 (1952). (157) Stitt, F., and Tomimatsu, Y., Ibid., 23, 1098 (1951). (158) Stokes, C. S., and Hauptschein, M., Ibid., 24, 1526Ibid., 24, (1952.…”