2002, Vol.14, No.1

Textile Coloration and Finishing KCI Impact Factor : 0.0

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

The aim of study was to elucidate dyeability and antimicrobial and antifungal activity of silk fabrics dyed with Sophora Radix extracts according to different mordants.Dyes were extracted from Sophora Radix using ethanol. Then, silk fabrics were dyed with extracts two times by post-mordanting method in which the extract was 60%(owf), the mordant was 3% (owf), L.R was 1:20, the temperature was 60∼70℃, the time of dyeing was 60min., and the time of mordanting was 60min.. The dyeability was evaluated by surface color, K/S values and durability of dye. The skin microorganisms used in this study was S. sureus, B. subtilis, S. epidermidis, P. acnes, P. aeruginosa, E. coli, A. niger, C. albicans and T. mentagrophytes.The results are as follows;1. When mordants were added, K/S value of silk dyed was not improved much and surface color was 2.2Y to 8.8Y in H(hue) value which indicated greenish yellow to reddish yellow 2. The color fastness tests to light, perspiration, dry-cleaning, rubbing, and stain fabric washing show 4∼5th degree which were valuated excellent. The color fastness to fade washing was improved to 3∼4th degree by addition of K2CrO7- mordants. 3. Antibacterial activity of silk dyed using no-mordant as well as mordants was excellent on S. aureus, B. subtilis, S.epidermidis and P.acnes, but showed poor antibacterial activities on P. aeruginosa and E.coli such as gram negative baterials4. Antifungal activity of silk dyed with ethanol extracts was good on A.niger, C.candida and T. mentagrophytes. Especially, on T. mentagrophytes there was no growth of fungus during 72 hours in silk dyed mordanting with SnCl2.2H2O.

To identify the antimicrobial activity of tumeric and its active compound tumeric was fractionated into four groups dichloromethane extract, hexane fraction, methanol soluble fraction and residue's extract. They were tested for antibacterial activity against E. coli and S. aureus and the methanol soluble fraction was found to be the most active fraction. Compound Ⅰ, Ⅱ and Ⅲ were isolated from TLC and silica gel column chromatography in the methanol soluble fraction. These compounds were analyzed by 1H-NMR and 13C-NMR spectra and identified as curcumin Ⅰ, Ⅱ and Ⅲ. They were also tested for antimicrobial activity against E. coli and S. aureus. Curcumin Ⅰ was the most active curcuminoids due to the phenolic and methoxyl(OCH3) moiety in the same molecular structure.

Chitosan has reactive amino and hydroxyl groups which can be used to chemically alter its properties under the mild reaction conditions. Thus the cationization of Tencel with chitosan is effective to modify the fabric. To investigate the modified properties of Tencel fabric, the tests were performed under the several finishing process with enzyme/glutaraldehyde/softener. The internal structure of Tencel which has the structure of cellulose Ⅱ wasn't changed by enzyme, chitosan and crosslinking agent treatment and the thermal stability was improved by chitosan and crosslinking agent treatment. Wrinkle recovery angle under the dry condition increased highly until 0.1㏖/ℓof glutaraldehyde concentration, and then decreased. Tensile strength of modified Tencel fabric decreased with increasing of weight loss, but it was improved more or less by chitosan, corsslinking agent and softener. Moisture regain was improved by enzyme and chitosan treatment. And antibacterial activity showed nearly 100% on Tencel fabric treated with 0.5% chitosan and adsorption of metal ion increased with increasing of chitosan concentration.