TXL212
| TXL212 | |
|---|---|
| Manufactured Fibre Technology | |
| Credits | 3 |
| Structure | 3-0-0 |
| Pre-requisites | TXL212/TXL211 |
| Overlaps | |
TXL212 : Manufactured Fibre Technology
[edit]Polymer rheology in shear as well as extension. Polymer entanglements. Flow instabilities in polymer fluids. Principles of solidification. Heat and mass transfer. Melt spinning. Force and momentum balance in spinline. Stress induced crystallization. Experimental observations from melt spinning of polyamides and polyesters. Solution spinning. Dry and wet spinning. Transport phenomena. Kinetic and thermodynamic effects in solution spinning. Solution spinning of viscose and acrylic fibres. Dry jet wet spinning. Post spinning processes. Drawing and heat setting. Stress-strain-structure relationship. Effect of post spinning operations on fibre structure and properties. Spin finish applications. Introduction to electrospinning. TXp212 Manufactured Fibre Technology Lab 1 Credit (0-0-2) The laboratory experiments are planned to provide knowledge on fibre formation of selected synthetic polymers and the characterization of fibres/tapes produced. Melt-spinning, extrusion, wet spinning and dry-jet wet spinning techniques is used to produce fibres or tapes. The evaluation of structure through thermo-mechanical properties, polymer solution rheology and microscopic analysis of materials is carried out using established methods.