| Abstract: | The effect of the interaction between a polymeric matrix and conductive particles of carbon black (CB), especially the interaction enhanced by oxidizing CB (o‐CB), on the resistivity–temperature behavior of its composites was studied. The results reveal that the interaction between ethylene‐vinyl‐acetate and CB is stronger than that between high‐density polyethylene and CB. The room temperature resistivity of the o‐CB filled system subsequent to thermal cycles increases to a lower extent in comparison with those filled with virgin CB. Moreover, the resistivity decrease of composites filled with o‐CB needs a longer time than that of the virgin CB filled system during isothermal annealing, meaning that the resistivity–temperature behavior of the former is much more stable than that of the latter. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 83: 3112–3116, 2002; DOI 10.1002/app.10049 |
