Nanocomposite of chitosan and silver oxide and its antibacterial property

Hu, Zhigang; Chan, Wing Lai; Szeto, Yau Shan

doi:10.1002/app.26822

Cited by 56 publications

(46 citation statements)

References 33 publications

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“…The hydroxyl groups of cellulose chains on the cotton surface form coordination bonds with the AgNPs, but the quantity of the coordination bonds is limited by the three-dimensional shapes of the cotton fiber and AgNPs. As reported in a number of papers [38,[41][42][43][44][45][46] using the binder of the modified chitosan, both the quantity (chitosan chains wrapping on the Ag NP surface) and the bond strength (amino groups are stronger than hydroxyl groups) of the coordination bonds with Ag NP increased, resulting in a stronger adsorption of the AgNPs on the cotton surface. Figure 9 shows the TGA data of the original cotton, the modified cotton fabrics before and after 30 laundering cycles.…”

Section: Laundering Durabilitymentioning

confidence: 81%

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Durable antibacterial cotton modified by silver nanoparticles and chitosan derivative binder

Zhang

et al. 2016

Fibers Polym

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This article focuses on the functional finishing of textiles using silver nanoparticles (AgNPs) and chitosan derivative binder, which was synthesized by a modification of chitosan using α-ketoglutaric acid. The binder covalently linked to cotton fabric via esterification of the hydroxyl groups on the cotton surface, and tightly adhered to surface of the AgNPs by coordination bonds. As a result, the coating of AgNPs on the cotton fabric showed excellent antibacterial property and laundering durability. After 30 consecutive laundering cycles, the Ag content on the fabrics decreased to 37.6 %, but the bacterial reduction rates against both S. aureus and E. coli were maintained over 95 %. It has potential applications in a wide variety of fields such as sportswear, socks, and medical textile.

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Section: Laundering Durabilitymentioning

confidence: 81%

“…Chitosan has been widely used to immobilize AgNPs onto cotton surface [42][43][44][45][46] because its amino groups can form coordination bonds with AgNPs. However, the weak intermolecular action between chitosan and cellulose generally results in an unsatisfactory antimicrobial durability.…”

Section: Introductionmentioning

confidence: 99%

Durable antibacterial cotton modified by silver nanoparticles and chitosan derivative binder

Zhang

et al. 2016

Fibers Polym

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“…Nano-emulsion of chitosan/ silver oxide composite was prepared using ultrasound. The antimicrobial activity of the treated cotton fabric was durable and effective 70) . Nano-sized Ag colloids were used for antimicrobial activity on polyethylene/polypropylene (PE/PP) nonwovens.…”

Section: Metal and Metal Saltsmentioning

confidence: 94%

Antimicrobial Agents and Applications on Polymeric Materials

Lee¹

2008

Textile Coloration and Finishing

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Abstract-A wide variety of materials including aldehydes, cationic agents, alcohols, peroxygens, phenols and chlorinated phenols, metal ions are being employed as biocides. Among three levels for biocidal functions (sanitization, disinfection and sterilization), disinfection is an enough level for antimicrobial textiles. In terms of antimicrobial agents for textile applications, quaternary ammonium salts (QAS), chitosan, metal and metal salts, N-halamine based materials are developed with numerous research and the positive ions of those materials may result in disinfection of microorganisms. Photocatalysts, especially titanium dioxide (titania) produces the hydroxyl radical (․OH) which causes inactivation of microorganisms after UV radiation, have been used for antimicrobial applications.

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“…Silver when used in micro or nano scales its efficiency increases as bacteria could not build resistance against it [10] as is the case with other antimicrobial agents, and it also supplement chitosan which is poor if used alone [11]. Many workers [12][13][14] achieved excellent antibacterial activity against Staphylococcus aureus and Escherichia coli bacteria by using a blend of chitosan/AgCl with a low add-on process without affecting fabric handle.…”

Section: Introductionmentioning

confidence: 99%

Neural network modeling and principal component analysis of antibacterial activity of chitosan/AgCl-TiO2 colloid treated cotton fabric

et al. 2015

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The present work was undertaken to predict the antibacterial activity of chitosan/AgCl-TiO 2 colloid treated cotton fabric with artificial neural network (ANN) using chitosan/AgCl-TiO 2 concentration and curing time as predictors. Cotton fabric samples were prepared by treating with different blends of chitosan/AgCl-TiO 2 colloid and varying curing time. The antibacterial activity against Staphylococcus aureus (gram positive) and Escherichia coli (gram negative) was measured in terms of % bacterial reduction (% BR). Feedforward neural network models were trained with combination of LevenbergMarqaurdt algorithm and Bayesian regularization support incorporated in backpropagation. The 10 % cross-validation technique was also carried out to rule out any chance of over-fitting of the trained networks. Furthermore trend analysis was also performed with developed models to understand the effect of input parameters. The promising results realized with excellent coefficient of determination and acceptable mean absolute error during network training and their testing on the novel data patterns. The developed models will benefit the design and development of clean and hygienic textiles. Principal component analysis (PCA) was also performed to visualize and analyze the correlation between the variables and the trend of individual observation on two-dimensional space.

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Nanocomposite of chitosan and silver oxide and its antibacterial property

Cited by 56 publications

References 33 publications

Durable antibacterial cotton modified by silver nanoparticles and chitosan derivative binder

Durable antibacterial cotton modified by silver nanoparticles and chitosan derivative binder

Antimicrobial Agents and Applications on Polymeric Materials

Neural network modeling and principal component analysis of antibacterial activity of chitosan/AgCl-TiO2 colloid treated cotton fabric

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