Evaluation of physical and mechanical characteristics of three-thread fleece knit fabric for their structural changes.

The aim of this research is to explore the variations that can arise when three-thread fleece (3- TFL) fabric is manufactured with the same yarn type, count, stitch length, knitting machine gauge, and diameter but in different structural configurations. The physical and mechanical properties of 3-TFL fabrics vary depending on their structural construction, which has a significant impact on their intended usage. For this study, four distinct types of three-thread fleece fabric structures were developed titled straight, three-butt diagonal, four-butt diagonal, and double tuck 3-TFL.

Separation of Branched Poly(bisphenol A carbonate) Structures by Solvent Gradient at Near-Critical Conditions and Two-Dimensional Liquid Chromatography.

Branching is a molecular metric that strongly influences the application properties of polymers. Consequently, detailed information on the microstructure is required to gain a deeper understanding of structure-property relationships. In the present case, we employ high-performance liquid chromatography to characterize the branching in a poly(bisphenol A carbonate) (PC).

Selective chromatographic separation of polycarbonate according to hydroxyl end-groups using a porous graphitic carbon column.

Porous graphitic carbon (PGC) has shown unique separation efficiency in liquid chromatography for a wide range of substance classes. In the characterization of polymers PGC has particularly been used for analysis of polyolefins. Its retention mechanisms differ dramatically from those of silica-based stationary phases and therefore allow interesting applications.