Fabrication and Characterization of Antibacterial Polyurethane Acrylate-based Materials

Zeytuncu, Bihter; Morcali, Mehmet Hakan

doi:10.1590/1516-1439.026515

Cited by 8 publications

(4 citation statements)

References 24 publications

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Section: Discussionsupporting

confidence: 59%

“…The potential of the silver nanoparticles was also evidenced by other authors, and AgNPs dispersed in polymer matrix showed high efficacy against E. coli, S. aureus, and P. aeruginosa 20,21 . Cencetti et al 22 described very significant antimicrobial activity against the gram-positive S. aureus and gram-negative P. aeruginosa, results similar to those found in this work.…”

Section: Discussionsupporting

confidence: 58%

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Influence of silver nanoparticles on the tissue reaction of polyacrylic acid-based gel

Bonete

Tamashiro²,

Paiva³

et al. 2022

Acta Cir. Bras.

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Purpose: To study the influence of silver nanoparticles (AgNP) on tissue reaction when incorporated into a polymeric matrix of polyacrylic acid-based (Carbopol ® ) gel as a proposal for a new low-cost type of biomaterial that is simple to manufacture for use as an antimicrobial and antioxidative dressing. Methods: In-vivo tests of implantation in the subcutaneous tissue of the back of rats were performed using polyethylene tubes in three situations: empty, only the gel, and gel incorporated with AgNP. Then, the tissue reaction was studied by counting inflammatory cells. Additionally, in-vitro tests of the antioxidative and antimicrobial activity of AgNP were performed. The radical 2,2 diphenyl-1 picrylhydrazyl (DPPH) was used to test the antioxidative activity of AgNP using electron spin resonance. The antimicrobial activity of AgNP was determined by minimum inhibitory concentration against the microorganisms: Staphylococcus aureus , Pseudomonas aeruginosa , and Escherichia coli . Results: The results indicated that AgNP presents antioxidative activity and was able to inhibit the growth of the microorganisms tested. The addition of AgNP in Carbopol ® did not alter the tissue inflammatory response (p > 0.05, Kruskal-Wallis’s test). Conclusions: The new biomaterial is promising for future use as a dressing for its beneficial properties for regenerative processes.

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Section: Discussionsupporting

confidence: 59%

Section: Discussionsupporting

confidence: 58%

Influence of silver nanoparticles on the tissue reaction of polyacrylic acid-based gel

Bonete

Tamashiro²,

Paiva³

et al. 2022

Acta Cir. Bras.

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“…38 In combination with polyurethane matrices and polyurethane foams, silver nanoparticles showed high bactericidal activities. 44 − 51 Nevertheless, the treatment of human consumer goods such as water or food with Ag + ions or silver nanoparticles poses risks that need to be addressed. On the one hand, Ag + ions increase their activity with increasing concentration, requiring relatively high concentrations of 0.2 ppm or more.…”

Section: Resultsmentioning

confidence: 99%

“…The activity of silver relies on the fact that Ag + ions diffuse from the substrate and exert a strong inhibitory effect (remarkable at concentrations as low as 0.001 ppm) on a wide range of microorganisms such as bacteria, molds, and viruses . In combination with polyurethane matrices and polyurethane foams, silver nanoparticles showed high bactericidal activities. − Nevertheless, the treatment of human consumer goods such as water or food with Ag + ions or silver nanoparticles poses risks that need to be addressed. On the one hand, Ag + ions increase their activity with increasing concentration, requiring relatively high concentrations of 0.2 ppm or more.…”

Section: Resultsmentioning

confidence: 99%

Silver Foams with Hierarchical Porous Structures: From Manufacturing to Antibacterial Activity

Durmus

Jordá

2021

ACS Appl. Mater. Interfaces

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The development of porous materials with hierarchical porous structures is currently of great interest. These materials exhibit properties representative of different pore scales and thus open up the possibility of being used in new applications. In this paper, a method for the preparation of silver foams with hierarchical porous structures is discussed. Here, the replication method, which is typically used to produce coarse-pore foams, is merged with dealloying, which is commonly used to manufacture small-pore foams. For this purpose, packed NaCl particles (hard template) were infiltrated with 75%Al–25%Ag alloy (whose so-called soft template is the Al-rich phase). Both the hard and soft templates were removed by water dissolution and dealloying with HCl or NaOH solutions, respectively. Extensive characterization of the resulting materials revealed pores ranging from a few nanometers to hundreds of micrometers. The materials were characterized by their antibacterial performance against Gram-positive and Gram-negative bacteria and showed significantly higher activity than both silver foams prepared by sintering pure Ag particles and silver nanofoams produced by chemical dealloying. The combinations of pores of different sizes and the resulting high internal specific surface area have a decisive influence on the antibacterial capacity of these new materials.

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An Easy Fabricable Film for Organic Electronics Based on Phenoxy and Epoxy

Bari

Kim

2019

Macro Chemistry & Physics

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A polymeric substrate is an essential component of a flexible organic electronic device. A novel composition of phenoxy and epoxy resin, phenoxy epoxy polymer (PE polymer), film is fabricated. The process of synthesis and fabrication of the film is optimized. The PE polymer film shows the high optical transmittance of 90.1%. Furthermore, the PE polymer film has exhibited high stability of transparency after humid, UV, IR, acid, and base treatments. The PE polymer film also demonstrates a higher contact angle than the PET, and considerable tensile strength and chemical resistance ability. The PE polymer film provides significant developed barrier ability to allow only 87.2% permeation than the PET film. The new PE polymer film has a high prospect for the flexible organic electronic device as a barrier film or substrate.

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Fabrication and Characterization of Antibacterial Polyurethane Acrylate-based Materials

Cited by 8 publications

References 24 publications

Influence of silver nanoparticles on the tissue reaction of polyacrylic acid-based gel

Influence of silver nanoparticles on the tissue reaction of polyacrylic acid-based gel

Silver Foams with Hierarchical Porous Structures: From Manufacturing to Antibacterial Activity

An Easy Fabricable Film for Organic Electronics Based on Phenoxy and Epoxy

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