INVESTIGATION OF NYLON-6 FIBER STRUCTURE INTERFEROMETRICALLY

Multiple-beam Fizeau fringes are used to study the changes in optical properties of Nylon-6 gamma-irradiated fibres. Changes in fibre structures due to dl awing have been studied using two-beam interference. Some structural parameters such as optical orientation function and electric polarizability difference (Delta alpha/3 alpha(O)) were determined. Delta alpha/3 alpha(O) is found to be constant and depends only on the fibre structure. The generalized Lorantz-Loranz equation given by de Vries is used to determine Nylon-6 fibre structural parameters. Comparison between the results and when using Lorantz-Loranz equation are given. Refractive index profiles also can help in fibre investigations.