Effect of cationization on adsorption of silver nanoparticles on cotton surfaces and its antibacterial activity |
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| Authors: | Mohammad Shateri Khalil-Abad Mohammad Esmail Yazdanshenas Mohammad Reza Nateghi |
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| Institution: | (1) Textile Department, Islamic Azad University, Yazd Branch, P.O. Box 155, Yazd, Iran;(2) Chemistry Department, Islamic Azad University, Yazd Branch, P.O. Box 155, Yazd, Iran; |
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| Abstract: | Cotton was cationized by exhaustion method using 3-chloro-2-hydroxypropyl trimethyl ammonium chloride (CHPTAC) as a cation-generating
agent. Adsorption of silver nanoparticles on normal and cationized cotton was studied by exhaustion method at temperatures
of 80°C and 100°C. Two exhaustion baths were used, containing nanosilver colloidal solutions stabilized by two different stabilizers
and various concentrations of silver nanoparticles. Fourier-transform infrared (FT-IR) spectra of normal and cationized samples
confirmed the existence of quaternary ammonium groups on cationized cellulose fibers. X-ray diffraction (XRD) patterns showed
that crystallinity of the modified cellulose fibers was decreased. Scanning electron microscope (SEM) images revealed that
the surface of the modified cotton was rougher than that of normal cotton. In addition, SEM images showed the presence of
silver nanoparticles on the surface of treated fabric samples. The amount of silver particles adsorbed on the fabric samples
was determined using inductively coupled plasma-optical emission spectrometer. Antibacterial tests were performed against
Escherichia coli bacteria as an indication of antibacterial effect of samples. Cationized cotton samples adsorbed more silver nanoparticles
and then had greater ability to inhibit bacteria. |
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