Abstract
The intrinsic (maximum observable) birefringence Δ n max at complete orientation of the assembly is determined for polypropylene (PP) and polyethylene (PE) fibres. This is quantified by determination of the molecular orientation parameter of the fibre at a given value of the draw ratio using mathematical expressions. Also, a new approach is suggested for determining the unknown initial value of the draw ratio for given fibres. The double-beam polarizing (Pluta) microscope with a drawing device attached is used for this purpose. Illustrations using microinterferograms, graphs and tables are shown.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.