1. Influence of antimicrobial reagent on the cellulose degradation D. Jaušovec, B. Vončina University of Maribor, Faculty of Mechanical Engineering, Textile Department, Smetanova 17, 2000 Maribor, Slovenia

2. INTRODUCTION WASTE HYGIENIC TEXTILESANTIMICROBIAL TEXTILES BIODEGRADATION INFLUENCE OF ANTIMICROBIAL TREATMENT ON BIODEGRADATION OF CELLULOSE TEXTILE SUBSTRATES (cotton and model cellulose films)

3. BACKGROUND 3-(trimethoxysilyl)-propyldimethyloctadecyl ammonium chloride (TMPAC)

4. AIM OF WORK Influence of antimicrobial treatment on biodegradation of cellulose textile materials Enzymatic degradation of pure model cellulose film and model cellulose film adsorbed with TMPAC elemetary research cotton fabric ISO 11721-1:2001 SEM, FT-IR cellulase cellulose interaction in the degradation of model cellulose film ellipsometry, ATM

5. RESULTS SEM images show a difference in morphological changes between antimicrobial treated and untreated samples after soil exposure for different periods. Initial surfaces of antimicrobial treated and untreated samples were smooth. 28 days after soil exposure the fabric showed porosity, breaks and cracks which are more intense for untreated samples. 0 days 14 days 28 days Figure 1: Scanning electron micrographs of antimicrobial treated cotton (A) and untreated cotton (B) after 0, 14, and 28 days of soil exposure

6. 4000.03000200015001000650.0 -0.76 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.80 cm-1 A 1638 1544 Figure 2: FTIR spectra of untreated cotton before soil exposure (solid line), 14 days after soil exposure (dash line) and 28 days after soil exposure (dot line).

7. 4000.03000200015001000650.0 -0.89 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.65 cm-1 A 1638 1544 Figure 3: FTIR spectra of TMPAC treated cotton before soil exposure (solid line), 14 days after soil exposure (dash line) and 28 days after soil exposure (dot line).

8. CONCLUSIONS In this research, the influence of the antimicrobial agent on biodegradation of cellulose substrate via morphological changes and changes in functional groups in time- dependence were studied. We can conclude that the application of TMPAC onto the cotton fabric slows down the degradation rate of cellulose.

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