The Open UniversitySkip to content
 

Effect of processing parameters on the morphology development during extrusion of polyethylene tape: an in-line Small-Angle X-ray Scattering (SAXS) study

Heeley, E. L.; Gough, T.; Hughes, D. J.; Bras, W.; Rieger, J. and Ryan, A. J. (2013). Effect of processing parameters on the morphology development during extrusion of polyethylene tape: an in-line Small-Angle X-ray Scattering (SAXS) study. Polymer, 54(24) pp. 6580–6588.

Full text available as:
[img]
Preview
PDF (Accepted Manuscript) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (827kB) | Preview
DOI (Digital Object Identifier) Link: https://doi.org/10.1016/j.polymer.2013.10.004
Google Scholar: Look up in Google Scholar

Abstract

The in-line development of crystalline morphology and orientation during melt extrusion of low density polyethylene (LDPE) tape at nil and low haul-off speeds has been investigated using Small-Angle X-Ray Scattering (SAXS). The processing parameters, namely haul-off speed and distance down the tape-line have been varied and the resulting crystalline morphology is described from detailed analysis of the SAXS data. Increasing haul-off speed increased orientation in the polymer tape and the resulting morphology could be described in terms of regular lamellar stacking perpendicular to the elongation direction. In contrast, under nil haul-off conditions the tape still showed some orientation down the tape-line, but a shish-kebab structure prevails. The final lamellae thickness (~50 Å) and bulk crystallinity (~20%), were low for all processing conditions investigated, which is attributed to the significant short-chain branching in the polymer acting as point defects limiting lamellae crystal growth.

Item Type: Journal Item
Copyright Holders: 2013 Elsevier Ltd.
ISSN: 0032-3861
Keywords: polymer extrusion; low density polyethylene (LDPE); Small-Angle X-Ray scattering (SAXS)
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Life, Health and Chemical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 38770
Depositing User: Ellen Heeley
Date Deposited: 17 Oct 2013 08:15
Last Modified: 07 Dec 2018 15:29
URI: http://oro.open.ac.uk/id/eprint/38770
Share this page:

Metrics

Altmetrics from Altmetric

Citations from Dimensions

Download history for this item

These details should be considered as only a guide to the number of downloads performed manually. Algorithmic methods have been applied in an attempt to remove automated downloads from the displayed statistics but no guarantee can be made as to the accuracy of the figures.

Actions (login may be required)

Policies | Disclaimer

© The Open University   contact the OU