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Effects of Fiber Spinning on the Morphology, Rheology, Thermal, and Mechanical Properties of Poly(trimethylene terephthalate)/Poly(ethylene terephthalate) Blends
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2014 (English)In: Advances in Polymer Technology, ISSN 0730-6679, E-ISSN 1098-2329, Vol. 33, no S1, 21443- p.Article in journal (Refereed) Published
Abstract [en]

The morphology, thermal behavior, rheological, and mechanical properties of poly(trimethylene terephthalate) (PTT)/poly(ethylene terephthalate) (PET) blend fibers were investigated. The scanning electron microscopy studies revealed the formation of a microfibrillar network of the PET within the PTT matrix after the fiber-spinning process. Differential scanning calorimetry results demonstrated that although the thermal characteristics of the amorphous phase were unaffected by the fiber-spinning process, the melting and crystallization behavior of the blends was altered by the elongation flow imposed during the melt spinning. The viscoelastic behavior of the PTT/PET blends was also studied by a steady shear rate and dynamic sweep rheological experiments before and after the spinning process. The induced morphology and crystallization reordering resulting from the fibrillation process are shown to have a remarkable effect on the complex viscosity profile of the PTT/PET fibers, particularly in the blend containing 30 wt% PET. The mechanical testing showed that tenacity and Young's modulus of the PTT fibers increased with the addition of PET up to 30 wt%.

Place, publisher, year, edition, pages
2014. Vol. 33, no S1, 21443- p.
Keyword [en]
Blending, Fibers, Fibrillar network, Polyesters, Rheology
National Category
Polymer Technologies
URN: urn:nbn:se:kth:diva-159382DOI: 10.1002/adv.21443ISI: 000346980600007ScopusID: 2-s2.0-84920160792OAI: diva2:785494

QC 20150203

Available from: 2015-02-03 Created: 2015-01-29 Last updated: 2015-02-03Bibliographically approved

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Akhlaghi, Shahin
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Fibre and Polymer Technology
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