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Variations in refractive optical properties of nylon 66 fibres under different thermal conditions 
El-Nicklawy M.M., El-Agmy R., Hassan A.F., El-Hagary Magdy, Adel Amany

Physics Department, Faculty of Science 11792, Helwan University, Cairo-Egypt

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In this work the changes in the refractive optical properties of nylon 66 fibres occurring due to heating in water and detergent solutions of different concentrations have been studied with the aid of interferometric techniques. Multiple-beam Fizeau fringes for the two alternative input light polarisations have been used in order to determine the refractive indices of the core and skin, their mean value, and the corresponding birefringences.

Keywords: nylon 66 fibres, polymers, refractive index, interference, birefringence

PACS: 42.25.Hz, 42.25.Lc, 42.70.Jk
UDC: 535.327
Ukr. J. Phys. Opt. 11 138-146   doi: 10.3116/16091833/11/3/138/2010
Received: 17.12.2009
After revision: 20.06.2010

Анотація. У даній роботі методом інтерферометрії досліджені зміни оптичних рефрактивних властивостей волокон - нейлон 66, які виникають при нагріванні води та миючих засобів різної концентрації. Для визначення показників заломлення серцевини, оболонки, їх середнього значення та двозаломлення використовувався метод багато променевої інтерферометрії Фізо для двох ортогональних поляризації світла.
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