An interferometric prediction of the intrinsic optical properties for cold-drawn iPP, PTFE and PVDF fibres

H. M. El-Dessouky, C. A. Lawrence, A. M. Voice, E. L.V. Lewis, I. M. Ward

Research output: Contribution to journalArticle

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Interference polarizing (Pluta and Interphako) microscopes have been used to measure the birefringence and refractive indices during the cold-drawing of isotactic poly(propylene) (iPP), poly(tetrafluoroethylene) (PTFE) and poly(vinylidene fluoride) (PVDF) fibres. The intrinsic birefringence (Δn0) and refractive indices (niso, and ) of iPP, PTFE and PVDF fibres were interferometrically predicted using affine and pseudo-affine models. In terms of these intrinsic values, a new way of calculating the orientation parameter is discussed. A selection of microinterferograms is given for illustration.
Original languageEnglish
Pages (from-to)1041-1047
Number of pages7
JournalJournal of Optics A: Pure and Applied Optics
Issue number11
Publication statusPublished - 15 Oct 2007
Externally publishedYes


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