Effect of heating-cooling cycle on the opto-structural properties of low-density polyethylene fibres using two-beam interference microscopy

H. M. El-Dessouky; K. M. Yassien; C. A. Lawrence

doi:10.1080/00405000903073626

Effect of heating-cooling cycle on the opto-structural properties of low-density polyethylene fibres using two-beam interference microscopy

H. M. El-Dessouky, K. M. Yassien, C. A. Lawrence

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

A hot stage attached with a two-beam interference (Pluta) microscope was used to apply a heating-cooling cycle (HCC) on low-density polyethylene fibres (LDPE). The variation of the refractive indices (n{double pipe} and n⊥) with the temperature was carried out during the heating and cooling of the LDPE fibres. The activation energy (Ea) and thermooptic coefficient (dn/dT) were calculated for the investigated LDPE fibres. The spectral dispersion curves, percent crystallinity and orientation function were determined for the treated LDPE fibres. It was found that the HCC for LDPE fibre implies: a reversible behaviour of both optical and structural properties against temperature and an improvement in the fibre crystallinity.

Original language	English
Pages (from-to)	812-822
Number of pages	11
Journal	Journal of the Textile Institute
Volume	101
Issue number	9
Early online date	22 Mar 2010
DOIs	https://doi.org/10.1080/00405000903073626
Publication status	Published - 1 Sep 2010
Externally published	Yes

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AU - Yassien, K. M.

AU - Lawrence, C. A.

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AB - A hot stage attached with a two-beam interference (Pluta) microscope was used to apply a heating-cooling cycle (HCC) on low-density polyethylene fibres (LDPE). The variation of the refractive indices (n{double pipe} and n⊥) with the temperature was carried out during the heating and cooling of the LDPE fibres. The activation energy (Ea) and thermooptic coefficient (dn/dT) were calculated for the investigated LDPE fibres. The spectral dispersion curves, percent crystallinity and orientation function were determined for the treated LDPE fibres. It was found that the HCC for LDPE fibre implies: a reversible behaviour of both optical and structural properties against temperature and an improvement in the fibre crystallinity.

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KW - Thermooptic coefficient

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Effect of heating-cooling cycle on the opto-structural properties of low-density polyethylene fibres using two-beam interference microscopy

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