Resumen de Effect of Carbon ion irradiation on filtration behavior of Polyetheretherketone (PEEK)

Rajesh Kalia, Vandana Sharma, J.K. Sharma

• The effects of air pollution are diverse and numerous. Air pollution can have serious consequences for the health of human beings and also severely affects natural ecosystems. The demand for high efficiency filters which can remove pollutants from polluted air has led to the development of electrets filters consisting of charged polymers. The operation of electrets filter is based upon electric behavior of polymers. The permanent electrification effects in polymers have been utilized in capturing the particles by electrets (1). Polyetheretherketone (PEEK) is classified as ultra high performance polymer among all the engineering polymers because of its remarkable properties (2). In order to study the effect of radiation on the electrification behavior of PEEK, the dipolar and charge trapping mechanism in pristine and irradiated PEEK samples has been inves tigated by using Thermally Stimulated Discharge Current (TSDC) technique. For this purpose the dielectric relaxation behavior of pristine PEEK samples and those irradiated to Carbon ion beam of energy 70 MeV have been studied at polarizing field E[subíndice P]= 100 kV/cm and at different polarizing temperatures T[subíndice P], (50°c, 100°C and 150°C).