Influence of the Cross-sectional Geometry on Wettability and Cleanability of Polyester Woven Fabrics

Filament cross-sections used in textiles and composites are becoming more and more complex. The type of cross-sectional shape impacts filament properties and are therefore, yarn and fabric characteristics. In this paper, the influence of different filament cross-section geometry on fibre properties as well as on fabric surface characteristics was studied. PET (polyethylene terephthalate) filament yarns made from two different cross-sectional shaped filaments, round and cruciform, were manufactured by the melt spinning process. Polyester fabrics were manufactured in a needle band weave machine from these two types of filament yarns. Topographic characteristics of polyester fabrics manufactured were determined by an imaging instrument for optical roughness analysis based on the principle of chromatic aberration. Differences between soiling behaviour, cleanability and wettability of the fabrics were revealed and discussed.

A Comparative Analysis between Different Ether Carboxylic Acids with Respect to Wettability and Surface Topography of Abrasively Treated Polyester Fabrics

Wetting properties and surface topography of different polyester fabrics have been determined before and after their mechanical abrasion. As protective finishes, different surface active ether carboxylic acids were used. The influence of different weave types of the fabrics – woven and knitted – on their abrasive resistance was revealed. A comparative analysis between different ether carbon acids with respect to wettability of fabrics, surface topography parameters and mechanical treatment by abrasion was done.