Novel core-shell particles with poly(n-butyl acrylate) cores and chitosan shells as an antibacterial coating for textiles

Ye, Weijun; Leung, Man Fai; Xin, John Haozhong; Kwong, Tsz Leung; Lee, Daniel Kam Len; Li, Pei

doi:10.1016/j.polymer.2005.08.019

Cited by 171 publications

(100 citation statements)

References 21 publications

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“…On the other hand, the CS can also make some contribution to the antibacterial activity of the core/shell-type Ag/CS nanoparticles. The bactericidal activities of the CS, as reported in previous works, 26 enables it to catch the surrounding bacteria through the strong ionic interaction with the cytoplasmic membrane of the bacteria. Once the CS captures the bacteria, the cell membrane remnants are likely to be adsorbed on the CS surface.…”

mentioning

confidence: 68%

Preparation and Characterization of Core/Shell-type Ag/Chitosan Nanoparticles with Antibacterial Activity

Yue¹,

Wang²,

Kang³

et al. 2011

Bulletin of the Korean Chemical Society

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Making use of chitosan (CS) and ethylenediaminetetraacetic acid (EDTA) as a reaction system, CS-EDTA nanoparticles were synthesized through a facile counterion complex coacervation method. Ag + could enter porous CS nanoparticles synthesized with this method, allowing Ag nanoparticles within chitosan nanoparticles were synthesized by reducing silver nitrate with chitosan. Because of the noncovalent interaction between CS and EDTA, the EDTA could be easily removed via dialysis against water, and pure core/shell-type Ag/CS nanoparticles could be obtained. The nanoparticles showed higher antibacterial activity toward E. coli than the active precursor Ag nanoparticles and CS.

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mentioning

confidence: 68%

Preparation and Characterization of Core/Shell-type Ag/Chitosan Nanoparticles with Antibacterial Activity

Yue¹,

Wang²,

Kang³

et al. 2011

Bulletin of the Korean Chemical Society

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“…A cell suspension of each microorganism was used for the antibacterial test. The antibacterial activity was evaluated by using the shake flask method (Ye et al, 2005). In this test, 50 ml of each cell suspension and predetermined amounts of beads were placed in a sterilized flask and continuously shaken at 150 rpm on a rotary shaker.…”

Section: Antibacterial Activity Of Free and Entrapped Phagesmentioning

confidence: 99%

Studies on The Antibacterial Activity of Some Free and Entrapped Bacteriophages against Fish Pathogens

2012

Egypt. J. Microbiol.

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HREE DIFFERENT bacteriophages namely VPS1, APS2 and APS3 were isolated from crab (Callinectes sapidus), clams (Tapes decussatns) and fish (Tilapia sp.) samples. They belong to families Siphoviridae, Myoviridae and Podoviridae, respectively. Statistical analysis based on analysis of phages DNA by using random amplification of polymorphic DNA-polymerase chain reaction (RAPD-PCR) revealed that the similarity levels were different among the three phages. Entrapment of VPS1 and APS2 was carried out into calcium alginate beads. The antibacterial activity of VPS1 and APS2 were tested before and after entrapment in Ca-alginate beads against some fish pathogenic bacteria such as Vibrio anguillarum and Aeromonas hydrophila. VPS1 seeded beads were superior (significant at P<0.05) from the free phages in reduction of the growth rate of V. anguillarum while, APS2 seeded beads exhibited lower efficiency in reduction of A. hydrophila growth rate. Antibacterial activity of entrapped VPS1 was studied during 7 successive cycles. VPS1 was successful (significant at P<0.05) in the reduction of V. anguillarum growth rate. A successful trial showed good applicability of entrapped VPS1 in reduction of 97% of the pathogenic Vibrio spp. in water sample from El-Mex fish farm after 3 h. Chemical characterization of plain and phage seeded beads was performed by using Fourier transform infrared spectroscopy (FTIR).

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“…Here, we replaced Bd with BA in order to explore the role of the T g of the main structural component in determining the mechanical properties of the nanoparticle films. PBA-based core-shell nanoparticles have been the subject of a number of studies 15,[31][32][33] . However, they have not been studied as nanostructured ionomer films cast from aqueous dispersions to the best of our knowledge.…”

Section: Introductionmentioning

confidence: 99%

Tuning the modulus of nanostructured ionomer films of core–shell nanoparticles based on poly(n-butyl acrylate)

et al. 2016

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ABSTRACT:In this study we investigate the structure-mechanical property relationships for nanostructured ionomer films containing ionically crosslinked core-shell polymer nanoparticles based on poly(n-butyl acrylate) (PBA). Whilst nanostructured ionomer films of core-shell nanoparticles have been previously shown to have good ductility [Soft Matter, 10, 4725, 2014], the modulus values were modest. Here, we used BA as the primary monomer to construct core-shell nanoparticles that provided films containing nanostructured polymers with much higher glass transition temperature (T g ) values. The core-shell nanoparticles were synthesised using BA, acrylonitrile (AN), methacrylic acid (MAA) and 1, 4-butanediol diacrylate (BDDA). Nanostructured ionomer films were prepared by casting aqueous coreshell nanoparticle dispersions in which the shell -COOH groups were neutralised with KOH and ZnO. The film mechanical properties were studied using dynamic mechanical analysis and tensile stress-strain measurements. The use of BA-based nanoparticles increased the T g values to close to room temperature which caused a strong dependence of the film mechanical properties on the AN content and extent of neutralisation of the -COOH groups.The Young's modulus values for the films ranged from 1.0 to 86.0 MPa. The latter is the highest modulus reported for cast films of nanostructured ionomer films prepared from coreshell nanoparticles. The films had good ductility with strain-at-break values of at least 200%.The mechanical properties of the films were successfully modelled using the isostrain model.From comparison with an earlier butadiene-based system this study demonstrates that the 2 nature of the primary monomer used to construct the nanoparticles can profoundly change the film mechanical properties. The aqueous nanoparticle dispersion approach used here provides a simple and versatile method to prepare high modulus elastomer films with tuneable mechanical properties.

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Novel core-shell particles with poly(n-butyl acrylate) cores and chitosan shells as an antibacterial coating for textiles

Cited by 171 publications

References 21 publications

Preparation and Characterization of Core/Shell-type Ag/Chitosan Nanoparticles with Antibacterial Activity

Preparation and Characterization of Core/Shell-type Ag/Chitosan Nanoparticles with Antibacterial Activity

Studies on The Antibacterial Activity of Some Free and Entrapped Bacteriophages against Fish Pathogens

Tuning the modulus of nanostructured ionomer films of core–shell nanoparticles based on poly(n-butyl acrylate)

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