Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2021 Aug 31;13(17):2932.
doi: 10.3390/polym13172932.

Nanocomposite Biopolymer Arboblend V2 Nature AgNPs

Simona-Nicoleta Mazurchevici  1 , Justina Georgiana Motaș  1 , Mariana Diaconu  2 , Gabriela Lisa  3 , Nicoleta Monica Lohan  4 , Mihai Glod  5 , Dumitru Nedelcu  1   6
Affiliations

Nanocomposite Biopolymer Arboblend V2 Nature AgNPs

Simona-Nicoleta Mazurchevici et al. Polymers (Basel). .

Abstract

Due to the pressing problems of today's world, regarding both the finding of new, environmentally friendly materials which have the potential to replace classic ones, and the need to limit the accelerated spread of bacteria in hospitals, offices and other types of spaces, many researchers have chosen to develop their work in this field. Thus, biopolymeric materials have evolved so much that they are gradually becoming able to remove fossil-based plastics from major industries, which are harmful to the environment and implicitly to human health. The biopolymer employed in the present study, Arboblend V2 Nature with silver nanoparticle content (AgNP) meets both aspects mentioned above. The main purpose of the paper is to replace several parts and products in operation which exhibit antibacterial action, preventing the colonization and proliferation of bacteria (Streptococcus pyogenes and Staphylococcus aureus, by using the submerged cultivation method), but also the possibility of degradation in different environments. The biopolymer characterization followed the thermal behavior of the samples, their structure and morphology through specific analyses, such as TGA (thermogravimetric analysis), DSC (differential scanning calorimetry), SEM (scanning electron microscopy) and XRD (X-ray diffraction). The obtained results offer the possibility of use of said biocomposite material in the medical field because of its antibacterial characteristics that have proved to be positive, and, therefore, suitable for such applications. The thermal degradation and the structure of the material highlighted the possibility of employing it in good conditions at temperatures up to 200 °C. Two types of samples were used for thermal analysis: first, in the form of granules coated with silver nanoparticles, and second, test specimen cut from the sample obtained by injection molding from the coated granules with silver nanoparticles.

Keywords: antibacterial behavior; composition; lignin-based polymer; structure; thermal behavior.

PubMed Disclaimer

Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Gram’s staining of Staphylococcus aureus (1000×).
Figure 2
Figure 2
Gram’s staining of Streptococcus pyogenes (1000×).
Figure 3
Figure 3
Erlenmeyer flasks with bacterial inoculum.
Figure 4
Figure 4
Submerged cultivation of bacterial strains.
Figure 5
Figure 5
Incubated samples and controls.
Figure 6
Figure 6
Highlighting the thermal behaviors of the tested samples: I, the first transformation; II, the second transformation; III, the third transformation; P1 (blue) and P2 (green) curves.
Figure 7
Figure 7
Thermogravimetric curves: (a) TG, (b) DTG and (c) DTA.
Figure 8
Figure 8
SEM analysis of the samples. (a) Surface analysis of P1; (b) Cross-sectional view of P1; (c) Surface analysis of P2; (d) Cross-sectional view of P2.
Figure 8
Figure 8
SEM analysis of the samples. (a) Surface analysis of P1; (b) Cross-sectional view of P1; (c) Surface analysis of P2; (d) Cross-sectional view of P2.
Figure 9
Figure 9
EDX spectroscopic analysis for P2 sample.
Figure 10
Figure 10
XRD analysis of the uncovered sample of Arboblend V2 Nature.
Figure 11
Figure 11
XRD analysis for P2 sample.
Figure 12
Figure 12
Number of UFC/mL resulting from submerged culture of Staphylococcus aureus (control (a) and sample (b)).
Figure 13
Figure 13
Number of UFC/mL resulting from submerged culture of Streptococcus pyogenes (control (a) and sample (b)).
See this image and copyright information in PMC

References

    1. Motas J.G., Quadrini F., Nedelcu D. Silver Nano-Coating of Liquid Wood for Nanocomposite Manufacturing. Procedia Manuf. 2020;47:974–979. doi: 10.1016/j.promfg.2020.04.299. - DOI
    1. Burrell R.E. A scientific perspective on the use of topical silver preparations. Ostomy Wound Manag. 2003;49:19–24. - PubMed
    1. Feng Q.L., Wu J., Chen G.Q., Cui F.Z., Kim T.N., Kim J.O.J. A mechanistic study of the antibacterial effect of silver ions on Escherichia coli and Staphylococcus aureus. Biomed. Mater. Res. 2000;52:662–668. doi: 10.1002/1097-4636(20001215)52:4<662::AID-JBM10>3.0.CO;2-3. - DOI - PubMed
    1. Berger T.J., Spadaro J.A., Chapin S.E., Becker R.O. Electrically generated silver ions: Quantitative effects on bacterial and mammalian cells. Antimicrob. Agents Chemother. 1976;9:357–358. doi: 10.1128/AAC.9.2.357. - DOI - PMC - PubMed
    1. Russell A.D., Hugo W.B. 7 antimicrobial activity and action of silver. Prog. Med. Chem. 1994;31:351–370. - PubMed

LinkOut - more resources