Antibacterial Activity of Cellulose Fabrics Modified with Metallic Salts

Abstract

This paper deals with the effect of a metallic salt treatment on the antibacterial activity of cellulosic fabrics against three kinds of bacteria: gram-positive bacteria Staphylococcus aureus (S. aureus), gram-negative bacteria Klebsiella pneumoniae (K. pneumoniae), and methicillin resistant Staphylococcus aureus (MRSA). Two kinds of cellulose fabrics are treated with the metallic salts CuSO4 and ZnSO4. The fabrics are pretreated with succinic acid anhydride to make adsorption of metallic salts more effective. This pretreatment is very effective at increasing the amount of metal ions adsorbed, and is more prominent in Cu ion than in Zn ion. The degree of antibacterial activity of samples treated with Cu salt against one of the S. aureus increases with an increasing amount of adsorbed Cu ion. A similar tendency is observed for the samples treated with Zn salt, although its correlation is not as clear as for Cu ion. Antibacterial activity is also confirmed against K. pneumoniae. The degree of antibacterial activity of samples treated with Cu salt against MRSA is almost independent of the amount of Cu ion adsorbed, and the tendency is similar for samples treated with Zn salt. After ten laundering cycles, the effect of the treatment is maintained. We conclude that these treatments are very effective in providing antibacterial activities to cellulose fabrics.

Antimicrobial activity of cotton fabrics containing immobilized enzymes

“…[28][29][30] Laundering and durability Treated fabric samples were laundered 10, 20, and 30 cycles in a home laundering machine, and subjected to antimicrobial activity tests as mentioned in the experimental work according to AATCC Test method 124. The results are given in Tables V-VII and reveal that: (i) increasing laundering cycles up to 10 cycles has practically no effect on the antimicrobial activity of the treated substrates, regardless of the immobilized enzyme as well as the nature of microorganisms, (ii) further increase in laundering cycle numbers, up to 20 cycles, has a negative impact on the retained antimicrobial activities depending on the type of immobilized enzyme and ranging from 50 to 87% in case of immobilized alkaline pectinase (Table V), 50 to 78.9% in case of immobilized a-amylase (Table VI), and 28.6 to 75% in case of immobilized laccase (Table VII), depending on the type of microorganisms, and (iii) after 30 laundering cycles the antimicrobial property against gram-positive and gram-negative bacteria as well as filamentous and nonfilamentous fungi remains at over 14%.…”

Synthesis and structure-activity relationship (SAR) of novel perfluoroalkyl-containing quaternary ammonium salts

“…The residue was purified by column chromatography on silica gel (petroleum ether:ethyl acetate = 10:1) to give compound 16 3.9. Toluene-4-sulfonic acid 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 13- (6,6,7,7,8,8,9,9,10,10,11,11,-N,N-diallylamine (18) A suspension of toluene-4-sulfonate 16 (0.70 g, 1.3 mmol), diallylamine (0.27 g, 2.7 mmol), and potassium carbonate (0.35 g, 2.6 mmol) in anhydrous CH 3 CN (10 mL) was heated to reflux for 24 h under nitrogen. The reaction mixture was filtered.…”

“…As the increasing demand for healthy living, it is urgent to develop materials capable of killing harmful microorganisms [1]. Recently, antibacterial finishing has received more and more attention owing to their antibacterial properties, and various antibacterial agents (such as antiobiotics, silver ions, iodine and quarternary ammonium compounds et al) have been applied to the textiles [2][3][4][5][6][7][8].…”

Bamboo Rayon-ZnO Nanoparticles Composite as Multifunctional Textile Materials

“…Generally, bamboo pulp fibre loses its natural antibacterial property present inherently in bamboo due to its treatment with alkali in its manufacturing process. The cellulosic fibre like bamboo rayon possesses many desirable properties which are suitable for apparels as well as medical textiles; however, the lack of antibacterial and UV protection properties is considered to be a severe limitation [1][2][3][4][5][6][7][8].…”