Antibacterial properties of padded PP/PE nonwovens incorporating nano-sized silver colloids

Jeong, Sung Hoon; Hwang, Yun Hwan; Yi, Sung Chul

doi:10.1007/s10853-005-4340-2

Cited by 164 publications

(90 citation statements)

References 12 publications

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“…76,77 For aqueous phase systems, the results show that the antibacterial test of Ag + ions is not high at the concentration levels reached by release, and the presence of AgNPs is very important, which reinforces the idea that the larger the surface area, the greater the antibacterial activity. 78 The diameters of the inhibition zones in agar plates are given in mm. The tests were repeated three times for each treated sample, and the results are presented in Table 2.…”

Section: Antibacterial Activitymentioning

confidence: 99%

Synthesis and characterization of silver/montmorillonite/chitosan bionanocomposites by chemical reduction method and their antibacterial activity

Shameli¹,

Ahmad²,

Zargar³

et al. 2011

IJN

138

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Silver nanoparticles (AgNPs) of a small size were successfully synthesized using the wet chemical reduction method into the lamellar space layer of montmorillonite/chitosan (MMT/Cts) as an organomodified mineral solid support in the absence of any heat treatment. AgNO3, MMT, Cts, and NaBH4 were used as the silver precursor, the solid support, the natural polymeric stabilizer, and the chemical reduction agent, respectively. MMT was suspended in aqueous AgNO3/Cts solution. The interlamellar space limits were changed (d-spacing = 1.24–1.54 nm); therefore, AgNPs formed on the interlayer and external surface of MMT/Cts with d-average = 6.28–9.84 nm diameter. Characterizations were done using different methods, ie, ultraviolet-visible spectroscopy, powder X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy dispersive X-ray fluorescence spectrometry, and Fourier transform infrared spectroscopy. Silver/montmorillonite/chitosan bionanocomposite (Ag/MMT/Cts BNC) systems were examined. The antibacterial activity of AgNPs in MMT/Cts was investigated against Gram-positive bacteria, ie, Staphylococcus aureus and methicillin-resistant S. aureus and Gram-negative bacteria, ie, Escherichia coli , E. coli O157:H7, and Pseudomonas aeruginosa by the disc diffusion method using Mueller Hinton agar at different sizes of AgNPs. All of the synthesized Ag/MMT/Cts BNCs were found to have high antibacterial activity. These results show that Ag/MMT/Cts BNCs can be useful in different biological research and biomedical applications, including surgical devices and drug delivery vehicles.

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Section: Antibacterial Activitymentioning

confidence: 99%

Synthesis and characterization of silver/montmorillonite/chitosan bionanocomposites by chemical reduction method and their antibacterial activity

Shameli¹,

Ahmad²,

Zargar³

et al. 2011

IJN

138

View full text Add to dashboard Cite

show abstract

“…50,51 For aqueous phase systems, the results show that the antibacterial test of Ag + ions is high at the concentration levels reached by releasing, and that the presence of Ag NPs is very important, which reinforces the idea that the larger the surface area the stronger the antibacterial activity. 52 The diameters of inhibition zone in the agar plate are given in mm. The tests were repeated three times for each treated sample, and the results are presented in …”

Section: Antibacterial Activitymentioning

confidence: 99%

Synthesis of silver nanoparticles in montmorillonite and their antibacterial behavior

Shameli

Ahmad²,

Zargar³

et al. 2011

IJN

126

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Silver nanoparticles (Ag NPs) were synthesized by the chemical reducing method in the external and interlamellar space of montmorillonite (MMT) as a solid support at room temperature. AgNO 3 and NaBH 4 were used as a silver precursor and reducing agent, respectively. The most favorable experimental conditions for synthesizing Ag NPs in the MMT are described in terms of the initial concentration of AgNO 3 . The interlamellar space limits changed little (d-spacing = 1.24–1.47 nm); therefore, Ag NPs formed on the MMT suspension with d-average = 4.19–8.53 nm diameter. The Ag/MMT nanocomposites (NCs), formed from AgNO 3 /MMT suspension, were characterizations with different instruments, for example UV-visible, PXRD, TEM, SEM, EDXRF, FT-IR, and ICP-OES analyzer. The antibacterial activity of different sizes of Ag NPs in MMT were investigated against Gram-positive, ie, Staphylococcus aureus and methicillin-resistant S. aureus (MRSA) and Gram-negative bacteria, ie, Escherichia coli , Escherichia coli O157:H7, and Klebsiella pneumoniae, by the disk diffusion method using Mueller-Hinton agar (MHA). The smaller Ag NPs were found to have significantly higher antibacterial activity. These results showed that Ag NPs can be used as effective growth inhibitors in different biological systems, making them applicable to medical applications.

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“…The selected microorganisms were Staphylococcus aureus ATCC 6538 and Escherichia coli ATCC 516. The antimicrobial activity test is based on the inoculation of the polymeric material with a suitable microorganism, so that when 20 hours of contact between the microorganism and the polymeric material have passed, the percentage reduction of the microorganism caused by the antibacterial agent will be determined [20][21][22]. Thus, it is possible to evaluate the antimicrobial activity with the following assessment: nonsignificant (<0.5), slight (>0.5-<1), significant (≥1-<3), and strong (≥3).…”

Section: Characterization Of Antimicrobial Behaviormentioning

confidence: 99%

Antioxidant and antibacterial effects of natural phenolic compounds on green composite materials

et al. 2012

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The aim of this study is to establish the thermal characteristics of a biocomposite (Arbofill kokos®), stabilized with different natural phenolic additives, in order to check the antioxidant capacity of the resulting compounds on the biocomposite. The phenolic compounds used were thymol, carvacrol, α-tocopherol and tannic acid, and the concentrations used were 0.5wt% and 2wt% of each compound. The results obtained were compared with the same biocomposite stabilized with an industrial antioxidant agent (octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate). Thermo-analytical techniques were used (DSC and TGA) to carry out the study. The antimicrobial effect of these natural phenolic compounds on the biocomposite was also studied by analyzing of the growth of bacterial colonies. The comparison between the phenolic compounds and the industrial compound showed good antioxidant action of the phenolic compounds on the base biocomposite; in all the mixtures of biocomposite and antioxidant agent the oxidation onset temperature (OOT) of the biocomposite increased. Of all the phenolic compounds studied the highest OOT was achieved with α-tocopherol, which, compared with the temperature of the base composite, showed an increase of almost 45%.

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Antibacterial properties of padded PP/PE nonwovens incorporating nano-sized silver colloids

Cited by 164 publications

References 12 publications

Synthesis and characterization of silver/montmorillonite/chitosan bionanocomposites by chemical reduction method and their antibacterial activity

Synthesis and characterization of silver/montmorillonite/chitosan bionanocomposites by chemical reduction method and their antibacterial activity

Synthesis of silver nanoparticles in montmorillonite and their antibacterial behavior

Antioxidant and antibacterial effects of natural phenolic compounds on green composite materials

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