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

INTRODUCTIONWASTE

HYGIENIC TEXTILES ANTIMICROBIAL TEXTILES

BIODEGRADATION

INFLUENCE OF ANTIMICROBIAL TREATMENT ON BIODEGRADATION OF CELLULOSE TEXTILE

SUBSTRATES (cotton and model cellulose films)

BACKGROUND

OCH3

Si (CH2)3

OCH3

OCH3 N+

CH3

CH3

C18H37 Cl

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

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

RESULTSSEM 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

4000.0 3000 2000 1500 1000 650.0

-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

16381544

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).

4000.0 3000 2000 1500 1000 650.0

-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

16381544

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).

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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