Author(s):
1. Dragana Grujić, Faculty of Technology Banja Luka, Republic of Srpska, Bosnia and Herzegovina
2. Aleksandar Savić, Faculty of Technology Banja Luka, Republic of Srpska, Bosnia and Herzegovina
3. Ljiljana Topalić-Trivunović, Faculty of Technology Banja Luka, Republic of Srpska, Bosnia and Herzegovina
4. Maja Čiča, Faculty of Technology Banja Luka, Republic of Srpska, Bosnia and Herzegovina
5. Ljubica Vasiljević, Faculty of Technology - University of East Sarajevo, Republic of Srpska, Bosnia and Herzegovina
6. Mitja Kolar, Fakulteta za kemijo in kemijsko tehnologijo, Slovenia

Abstract:
In this paper the influence of different types of pretreatment (with hydrogen peroxide (H2O2) and ozone) on the mechanical and antimicrobial properties of knitted fabrics treated with alcoholic extract of Achillea millefolium L. was examined. Breaking strength, elongation at break and loss weight of knitted fabrics before and after treatment with ozone and H2O2 are the mechanical properties were also tested. Two cotton knitted fabrics with various structural characteristics were used and made from the same type of yarn. Antimicrobial treatment of knitted fabrics with alcoholic extract of Achillea millefolium L., with or without the addition of alginate was investigated by using the bath exhaustion method. Antimicrobial properties of knitted fabrics treated with alcoholic extracts were tested on bacteria Staphylococcus aureus and Escherichia coli by using parallel streaking method (AATCC TM 147-2004). The degree of whiteness after processing with H2O2 and ozone, and the degree of coloration after dyeing with plant extracts was determined using CIELAB method. It was found that the ozone pretreatment did not appreciably affect the mechanical properties of the knitted fabrics. However, pretreatment with 4% H2O2 for 30 min obtained an appropriate degree of whiteness of knitted fabrics, with a reduction in breaking strength and elongation for about 20%. Such pretreated knitted fabrics after processing with alcoholic extract of the plant Achillea millefolium L. proved certain antimicrobial effect against Staphylococcus aureus.

Key words:
knitted fabrics,hydrogen peroxide,ozone,antimicrobial treatments,Staphylococcus aureus

Thematic field:
Textile Engineering

Date of abstract submission:
01.09.2016.

Conference:
XI Savjetovanje hemičara, tehnologa i ekologa Republike Srpske

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