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- Title
ISTRAŽIVANJE UTICAJA SIROVINSKOG SASTAVA I NAČINA OBRADE TKANINA NA NJIHOVA ANTIBAKTERIJSKA SVOJSTVA.
- Authors
Grujić, Dragana; Savić, Aleksandar; Topalić-Trivunović, Ljiljana; Janjić, Svjetlana; Jevšnik, Simona; Jokanović, Danijela
- Abstract
In this paper the effects of raw material composition and processing of fabrics with aqueous plant extract of Allium cepa L. and Juglans regia L. on the coloration degree and anti-bacterial properties were examined. Two different fabrics were used (100% cotton and 50% cotton/50% polyester), with the same structural characteristics and roughly with the same surface mass. The dyeing process with a aqueous plant extracts (concentration 100 g/L) was done in two ways by using the batch exhaustion method with the addition of different mordants (CH3COOH and KNaC4H4O6.4H2O). In addition to the above mentioned methods the textile dyeing was done with plants extracts without the usage of CH3COOH and KNaC4H4O6.4H2O. The pH value of used acetic acid solution was 3.5, while the potassiumsodium tartrate solution had a pH value around 5. The antibacterial properties of fabrics with aqueous plant extracts were tested on Escherichia coli and Staphylococcus aureus by using parallel streaking method (AATCC TM 147). The test results of the antimicrobial effects of aqueous extracts of Allium cepa L. and Juglans regia L. showed that there was no clear zone of inhibition. This was probabably due to a smaller concentration of antimicrobial substances preserved in the aqueous extracts, as well as the insufficient amount of extract that was absorbed in the fabrics used for this experiment. The degree of coloration of the tested fabrics was analyzed with a spectrophotometer CM-2600d / 2500d before and after treatment with plant extracts, and after testing for color fastness to washing and perspiration. From the color difference values ΔE , calculated on the basis of parameters from CIELa* b* system, a smaller ΔE could be noticed between the fabrics TK-1 and TK-2, treated with aqueous extract of Juglans regia L., in relation to the samples of the fabric treated with aqueous extracts of Allium cepa L. The achieved degree of coloration for the tested fabrics was satisfactory, considering the nature of the used plant extracts (aqueous extracts), with the darker shades obtained with the use of 3% KNaC4H4O6.4H2O compared to CH3COOH. It was also noticed that the dyeing of fabrics with plant extracts produced darker shades for 100% cotton fabric than for the fabrics mixture. This indicated a significant impact of raw material composition and sorption properties of the fabric on the degree of coloration, which was confirmed by the results of the RHt (relative humidity) [%] and the water retention Wrv [%] of the tested fabrics. Relative humidity (RHt) (moisture content) of the tested fabrics was measured on the device HB43 according to ISO 139-1973 (E). For the determination of the water retention in fabrics (Wrv), a centrifugation method according to standard DIN 53 814 was used. Applied plant extracts can also be used in the production of small batches of unique environmentally friendly products. At the same time, this refined fabrics show some antimicrobial properties. From an ecological point of view, plant extracts, as natural products, are a suitable replacement for chemical colors.
- Publication
Gazette of Chemists, Technologists & Environmentalists of Republic of Srpska / Glasnik Hemicara, Tehnologa i Ekologa Republike Srpske, 2014, Vol 10, p57
- ISSN
1840-054X
- Publication type
Article
- DOI
10.7251/GHTE1410057G