양이온화된 대나무-면 복합직물의 천연염색에 관한 연구 -치자를 중심으로-

Abstract

This study aimed to investigate the dyeing characteristics of bamboo-cotton-blended fabric after cationization treatment using Gardenia dye. After cationization, the K/S and L*a*b*C*h° values of the bamboo-cotton blended fabric were measured using a computer color-matching system (CCM). The dyeing characteristics were examined according to the cationization treatment concentration, dyeing temperature, and dyeing time, and K/S values were determined. Addi- tionally, the washing and light fastness of the Gardenia-dyed bamboo–cotton blended fabrics were evaluated. The results revealed that as the cationization treatment concentration increased, the K/S values also increased. The surface color of the fabric changed from bright yellow to a less bright shade as the cationization concentration increased. The optimal dye- ing temperature for Gardenia dyeing on bamboo-cotton blended fabric was 60?, with the optimal dyeing time being 40 min- utes. The maximum absorption wavelength was ~ 450 nm, where the highest K/S value was recorded. In terms of washing fastness, the discoloration improved as the cationization concentration increased. The staining fastness was excellent, with most samples showing a rating of 4–5, except for cotton. For light fastness, the sample treated with CHA- TAC-0 exhibited a rating of 3, whereas the samples treated with CHPTAC-25 or higher showed ratings of 3–4, indicating improved light fastness.