Study of Different Spectral Radiation on Fabricated Textile Polymers

Abstract

The present study is mainly applied for the investigation of the effect of the artificial y-irradiation and the natural daylight on some of the condensed materials, such as the fabricated textile polymers (cotton, nylon-6, polyester/cotton blend and wool/polyester blend). Different techniques were used and the following conclusion could be drawn:

It is noticed that y-irradiation in air atmosphere on cotton and nylon-6 fabrics enhances the loss in their activation energy Ea faster than that happened by natural exposure. Thus, the ionizing y-irradiation has a strong effect on the rate of degradation and also the thermal stability of cotton and nylon-6 than the natural solar irradiation. On the other hand, y-irradiation, at high doses, tends to induce crosslinking for the poly./cot. blend while natural daylight can only induce degradation. Moreover, the first stage of decomposition for wool/poly. blend that is exposed to y-irradiation or natural daylight has the same trend, it decreases gradually with increasing the irradiation dose or the natural exposure time, while the second stage of decomposition shows a different behaviour. Besides, the effect of y-irradiation on the transition temperatures for cotton and nylon-6 is striking and rapidly faster than that happened by the daylight exposure. Moreover, the transition temperatures for the polyester/cotton and wool/polyester blends changed slightly upon y-irradiation, while it decreases with increasing the natural daylight.