Yıldırım, Kenan2024-01-172024-01-172014-03Yıldırım, K. ve Ulcay, Y. (2014). "An experimental study and model development of poly(ethylene terephthalate) yarn morphology". E-Polymers, 14(2).1618-7229https://doi.org/10.1515/epoly-2013-0068https://www.degruyter.com/document/doi/10.1515/epoly-2013-0068/htmlhttps://hdl.handle.net/11452/39093In this study, macromolecular arrangements in fibers were investigated and a novel approach based on model development for partially oriented (POY) polyethylene terephthalate (PET) yarn morphology was proposed. Differential scanning calorimeter (DSC) analysis, Fourier transform infrared (FT-IR) analysis, boiling water shrinkage and tensile tests were performed through the study. DSC thermogram, FT-IR spectra, stress-strain curve, the change in the boiling water shrinkage properties and data from the literature were used to develop the model for POY PET fiber morphology. In order to make a comparison, textured PET yarn morphology was also investigated. The neck formations during tensile tests, cold crystallization on the DSC thermogram, peak formation on the FT-IR spectrum of the POY PET yarn after texturizing and shrinkage test at 971 and 845 cm(-1) and shrinkage phenomenon have been explained by this model.eninfo:eu-repo/semantics/closedAccessModel for poy fiber structurePolymer scienceMorphologyDeformationPet yarnDrawnStress-strain curvePolymersThermal behaviorMesophaseAnatomyCrystallizationPolyethylene terephthalateGlass-transitionShrinkageSupercritical carbon-dioxideWoolMorphologyYarnThermal behavioursBoiling water shrinkageThe differential scanning calorimeter (dsc)Fibre structureStress/strain curvesFourier transform infrared spectraPolyethylene terephthalate yarnsModel developmentPoly(ethylene) terephthalateModel for poy fiber structureArticle0003333030000042-s2.0-84897969753142Polymer scienceBlow Molding; Polyethylene Terephthalates; Bottle