소방추출액으로 염색한 키토산ᆞ나노실버 복합섬유 혼방 부직포의 염색성과 항균성

Abstract

This study examines the dyeing properties, light fastness, washing fastness, and antibacterial ability of four kinds of non-woven fabrics dyed with an extracted solution from Caesalpinia sappan. L. These fabrics include: 100% cotton non-woven fabric, 95% cotton/5% chitosan-nano silver composite non-woven fabric, 90% cotton/10% chitosan-nano silver composite non-woven fabric, and 70% cotton/10% chitosan-nano silver composite non-woven fabric. Caesalpinia sappan. L. dyeing was conducted through a process of pre- and post-mordanting with alum, iron, which induced different colors on the dyed fabrics. The results show that, first, the K/S value of chitosan and nano silver composite non-woven fabrics was higher than that of the 100% cotton non-woven fabrics in the dyed condition with an extracted solution from Caesalpinia sappan. L., and second, mordants treatment influenced dyeability. K/S values of dyeing fabrics was recognized by the mordants treatment, especially iron. K/S values of pre-mordanting were higher than post-mordanting. Mordants and the mordants treatment method affected the dye uptake. In the case of Caesalpinia sappan. L., the light fastness was increased by the mordants treatment. The light fastness of the chitosan and nano silver composite non-woven fabrics was better than that of the 100% cotton non-woven fabrics. The washing fastness was not affected by mordants treatment and the chitosan-nano silver content increased from 5% to 30%. Regarding the results of antibacterial ability, the bacterial reduction rate of chitosan and nano silver composite non-woven fabrics and chitosan and nano silver composite non-woven fabrics dyed with Caesalpinia sappan. L. was more than 99.9% resistant to Staphylococcus aureus and Klebsiella pneumoniae.