2002, Vol.14, No.2

Textile Coloration and Finishing KCI Impact Factor : 0.0

pISSN : 1229-0033 / eISSN : 2234-036X
https://journal.kci.go.kr/ksdf

Cotton fabrics dipped in cationic agent(3-chloro-2-hydroxypropyl trimethyl ammonium chloride) were irradiated with deep Ultra Violet Rays(UV), in the region of UV-C using the low pressure mercury lamp. The chemical changes of cationized cotton fabric surfaces were investigated by FT-IR analysis. The dyeabilities of the irradiated portions were investigated by dyeing with acid dyes. Deep UV(UV-C) irradiation broke O-H bonds in cotton fiber and oxidized the fibers. The dyeability of the UV irradiated portion were different from that of the portion not irradiated. Various pattern were gained from one bath dip dyeing by pattern mask. The tensile strengths of cotton fabrics were decreased in the UV irradiated portion. Washing fastness of cotton dyeings were good about 3∼4 grade and light fastness were fair about 2∼3 grade.

The interaction between berberine and tannin in aqueous solution was investigated spectrophotometerically. The dyeing mechanism of silk fabrics (control and tannin treated silk fabrics) with berberine was based on thermodynamic parameters obtained from equilibrium adsorption experiments.In adsorption spectra of aqueous solution of berberine and tannin mixture two isosbestic points (328㎚, 357㎚) were found and the mole fraction of reaction of components was 1:1. Initial dyeing rates were increased and the diffusion of dye was more effective by tannin treatment. Without regard to tannin treatment the adsorption isotherm of berberine was the langmuir type except high temperature, 80℃. By tannin treatment the saturation dye uptake was increased, the increase of dye uptake appeared to be a result of entropy change rather than enthalpy change.All these results can be interpreted by the hydrophobic interaction between berberine and silk treated with tannin and it is reasonable to conclude that not only the ionic force but also the hydrophobic interaction contributes to the binding of berberine and tannin treated silk treated with tannin.

A number of studies have been introduced on the use of quaternary cationic agents having various reactive groups, which can improve the substantivity of anionic dyes, specially direct dyes, towards cotton. In the case of direct dyes, it is well known that they are widely used due to their convenience to apply and low cost, whilst they display poor levels of fastness properties to washing. Thus many applications using direct dyes in the textile fields have been still enjoyed in the areas where a higher level of wet fastness is specially not required.This work herein comprises that in order to improve the substantivity of direct dyes towards cotton, cellulose-reactive allylamine polymer namely, triazinyl N,N'-dimethyl-N,N'-diallyl ammonium chloride was prepared and treated onto cotton to provide cationic properties within substrates. This application showed that even low concentration of electrolytes being present, the direct dyes were exhausted well on the cationized cotton and that the rate of dye uptake by treated cotton was faster than that of untreated sample. Furthermore the antimicrobial properties were observed from the cationized samples.