Abstract
Changes in the structure of nylon 6-6 fibres after annealing and quenching in coarse grained ice at 160°C were studied interferometrically. The Pluta polarising interference microscope has been used to determine the mean refractive indices and mean birefringence of these fibres. The optical orientation function and the molecular structure of the annealed and quenched nylon 6-6 fibres were calculated. The density and the mechanical loss factor of the annealed and quenched fibres were measured by a system based on vibrating strings. The density results were used to calculate the degree of crystallinity. Relationships between the mean refractive indices, birefringence, isotropic refractive index and polarisabilities per unit volume at various times are given for these fibres. The behaviour of fibre density and the mechanical loss factor under different annealing and quenching conditions were discussed with different optical parameters. The results obtained clarify the effect of annealing and quenching conditions on the orientation function, orientation angle and other optical and mechanical parameters. The effect of the annealing conditions on the refractive index profile was studied. Illustrations are given using graphs and microinterferograms.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
