Degradation of Polyester Partially Oriented Yarns through Alkaline Hydrolysis Process: A Recent Study | Chapter 05 | New Approaches in Engineering Research Vol. 12

 The feed material for the draw texturing process of polyester regular and micro fibres is partially oriented yarn. The biggest challenge the industry faces is POY quality, because storage of POY causes it to degrade, and the quality of draw textured yarn will be questioned as a result. As a result, a method to verify the freshness of POY is required, and alkaline hydrolysis can be employed as a tool to investigate the structure of POY. In this study, an earnest attempt is made to investigate the caustic impact on polyester POY using various degrading process parameters. This is the first study to use alkaline hydrolysis as a technique to better understand the deterioration process. The experimental methodology consisted of selecting different pet poy (both micro and macro denier) and storing them in standard conditions according to standard procedures for degradation, and then subjecting the stored materials to alkaline hydrolysis according to Zeronian and Collin's standard procedure. The density, critical dissolving time, and molecular weight of the treated samples were measured. The deterioration process has a major impact on these qualities in all circumstances, as evidenced by the weight loss of the alkaline hydrolysis process. In addition, the results were statistically significant.

Author(S) Details

J. Hayavadana
Department of Textile Technology, University College of Technology, Osmania University, Hdyerabad-7, India.

View Book:- https://stm.bookpi.org/NAER-V12/article/view/3839

Degradation of Polyester Partially Oriented Yarns through Alkaline Hydrolysis Process: A Recent Study | Chapter 5 | New Approaches in Engineering Research Vol. 12

The behaviour of strut-and-tie models (STMs) as derived from truss analogue models is the subject of this chapter. STMs are frequently used to assess and model the internal force distribution of a reinforced concrete deep beam structure from the point load to the supports that carry bending, shearing, and twisting forces in disturbed zones (D-regions). Where the stress situation occurs idealised as the concrete strut, the steel tie, and the nodal area, the action of the strut and tie creates an increase in the strength of the high-reinforced concrete beam construction, the D-region on structural elements can be more easily studied. The deep beam was numerically modelled using compressive loading simulation until it collapsed. To determine deflection, cracking, and destruction of ultimate load, model modification of two diagonal reinforcements, diagonal symmetrical truss reinforcement, and diagonal frame truss reinforcement, ANSYS 3D half-span symmetrical Strut-and-Tie model deep beams modelling was done. The ultimate bending capacity, load-deformation, ductility, stress behaviour, strain, and fracture pattern of STMs have all been determined through shape modification. The numerical modelling result reveals a significant difference in STM's deep beam behaviour.

Author (S) Details

J. Hayavadana
Department of Textile Technology, University College of Technology, Osmania University, Hdyerabad-7, India.

View Book :- https://stm.bookpi.org/NAER-V12/article/view/3839