Master Thesis : Investigation of Thermal Exposure on the Structural and Optical Properties of Textiles (including an introduction to research methodology)

Abstract

.This thesis investigated the effects of thermal exposure on the structural, optical, and mechanical properties of market, recycled, and post-consumer textile materials. Textile products are frequently exposed to heat during manufacturing and daily-use processes such as drying, finishing, and ironing, which could lead to discoloration, degradation, and loss of performance. The study focused on different textile compositions, including virgin and recycled cotton, virgin and recycled polyester, poly-cotton blends, and post-consumer textile products. Thermal treatments were applied under controlled conditions to evaluate the relationship between fiber composition and property changes after heat exposure. Structural and surface modifications were analysed using SEM-EDX, optical microscopy, FTIR spectroscopy and TG-DSC. In addition, tensile strength testing was performed to determine the impact of thermal aging on mechanical performance. The results contributed to the development of more sustainable textile materials while supporting improved recycling strategies and enhanced durability of textile products in circular economy applications.