Akademik Veri Yönetim Sistemi
Coloration Technology, 2026 (SCI-Expanded, Scopus)
This study investigates a sustainable dyeing and finishing strategy for recycled nylon 6,6 and organic cotton fabrics dyed with weld. Following meta-mordant dyeing using alum under Natural Organic Dye Standard (NODS)-compliant conditions, the fabrics were subjected to functional finishing with titanium dioxide as a multifunctional photocatalytic surface agent and sodium alginate as a film-forming biopolymeric binder. The finishing process was optimised using pad-batch and exhaust procedures, with parameters varying with the TiO2/C6H7NaO6 concentration ratio. Fourier transform infrared (FTIR) spectroscopy was employed to investigate the structural properties of the dyed fabrics and determine the molecular-level interactions between titanium, sodium alginate and the fibre matrix. Surface elemental distribution was analysed using scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM-EDX). Natural dye components were identified by high-performance liquid chromatography with diode-array detection (HPLC-DAD) under fully reported, reproducible chromatographic conditions. The results indicate that the alginate-based coating improves dye fixation and fastness by forming a continuous surface film, while TiO2 enhances UV protection primarily through scattering and absorption mechanisms, thereby significantly decreasing the transmission level of UV-A and UV-B radiation.