Effects of Fiber Spinning on the Morphology, Rheology, Thermal, and Mechanical Properties of Poly(trimethylene terephthalate)/Poly(ethylene terephthalate) Blends
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
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.
Blending, Fibers, Fibrillar network, Polyesters, Rheology
IdentifiersURN: urn:nbn:se:kth:diva-159382DOI: 10.1002/adv.21443ISI: 000346980600007ScopusID: 2-s2.0-84920160792OAI: oai:DiVA.org:kth-159382DiVA: diva2:785494
QC 201502032015-02-032015-01-292015-02-03Bibliographically approved