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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Gough, Tim
University of Bradford
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2022A Combined Rheological and Thermomechanical Analysis Approach for the Assessment of Pharmaceutical Polymer Blendscitations
- 2018In-process rheometry as a PAT tool for hot melt extrusioncitations
- 2018Comparison of crystallization characteristics and mechanical properties of polypropylene processed by ultrasound and conventional micro injection moldingcitations
- 2017Application of hot melt extrusion for improving bioavailability of artemisinin a thermolabile drugcitations
- 2015Systematic identification of thermal degradation products of HPMCP during hot melt extrusion processcitations
- 2013Effect of processing parameters on the morphology development during extrusion of polyethylene tape: an in-line Small-Angle X-ray Scattering (SAXS) studycitations
- 2006Polymer blends in a contraction-expansion flow.citations
- 2003Recirculation cell for the small-angle neutron scattering investigation of polymer melts in flowcitations
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article
Effect of processing parameters on the morphology development during extrusion of polyethylene tape: an in-line Small-Angle X-ray Scattering (SAXS) study
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.