Radiation-Insensitive Conducting Plastics
Original Publication Date: 1984-Oct-01
Included in the Prior Art Database: 2005-Feb-05
Conducting polymers made up of aromatic units exhibit a much higher degree of stability to ionizing radiation than, for example, polystyrene. We have irradiated films from (a) polythiophene " BF4; (b) polypyrrole $ BF4; (c) polypyrrole ClO4; (d) polyazulene ClO4 in air using a Cs-137 source (q-decay 0.67 MeV) at a measured dose rate of 1240 Rad/min or 8 $ 1016 eVg. min. As is outlined in the table, the conductivity data of all four polymers stay the same before and after irradiation within experimental error. Furthermore, the films remain insoluble in organic solvents, showing that no significant degradation sets in. (Image Omitted) The values given in parentheses are the film conductivities before irradiation.