Comparison of tensile, thermal, and thermo‐mechanical properties of polyester filaments having different cross‐sectional shape

Abstract

One of the most important morphological features of fibers is their cross-sectional shape. Nowadays, the circular fiber cross-section is the most common shape of melt-spun man-made fibers. Other shapes are beginning to emerge for a variety of reasons such as performance, comfort, pilling propensity, bulkiness, tactility, processing etc. The filaments' cross-section can be easily varied by changing the spinneret hole shape. Synthetic fibers that are predominantly spun by the melt spinning method with spinnerets having the noncircular hole geometry are called profiled or noncircular fibers. Modifications of the fiber cross-section allow designing surface properties in yarn and fabric. However, the effect of profiled fibers on yarn properties has not been well documented yet. In this article, the influence of different filament cross-section geometry on fiber properties was studied. PET (polyethylene terephthalate) filament yarns having two different crosssectional shaped filaments, circular and cruciform, were manufactured by melt spinning. Differences in tensile properties of filament yarn and as well as of individual filament depending on the cross-sectional type were studied and revealed. More over, thermal and thermomechanical properties of filament yarn of both the cross-sections were studied and revealed by DSC and TMA method, respectively.

Study on Special Shaped Polyester Fibers and Development of Products

“…The capillary wetting of cruciform plus-shaped PET was also increased, but the tenacity and elongation decreased. [14][15][16] So far, many products use triangular cross-section and hollow fiber PET, while the mechanism and performance of other profiled PET fibers remain to be studied (e.g., flatshaped and hexagonal-shaped PET fibers). 17,18 Flat-shaped and hexagonal-shaped PET fibers were relatively simple to process, low in cost, and easy to develop textile products.…”

Properties investigation of polyester yarns with different cross-sections

“…The cross-sectional shapes of the synthetic fibers produced according to the melt-extrusion process can easily be varied by changing the nozzle. The fibers having different cross-sectional shapes obtained in this manner are also referred in the literature as "profiled fibers", "non-circular fibers" or "modified cross-section fibers" [4][5].…”

“…The effects of cross-sectional shape on tensile, thermal, and thermo-mechanical properties of polyester filaments were investigated by Hasan et al [4]. Two different cross-sectional shapes of the polyester filaments that they produced via spin winding process were in round and plus shaped.…”

Correlation Between Wettability and Cleanability of Polyester Fabrics Modified by a Soil Release Polymer and Their Topographic Structure

“…A detailed description of this process including the characterisation of the produced polyester yarn is provided in [3]. Polyester fabrics were manufactured in a needle band weave machine from these two types of filament yarns.…”