Super effective antimicrobial silver-sputtered coatings on poly(lactic acid) against bacteria and omicron SARS-CoV-2

Silva, Daniel José da; Ferreira, Greiciele S.; Duran, Adriana Feliciano Alves; Fonseca, Fernando L. A.; Bueno, Rodrigo F.; Rosa, Derval S.

doi:10.1016/j.mtchem.2023.101481

Cited by 2 publications

(3 citation statements)

References 84 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Ag layers adhesion to the polymeric substrates is in general poor, but it is improved by enhanced substrate roughness and successful direct deposition of Ag thin film on PLA by magnetron sputtering was already reported ( Da Silva et al, 2023 ). The advantage of AgNPs compared to a smooth Ag layer is their enormous active surface.…”

Section: Discussionmentioning

confidence: 99%

Silver nanoparticles with plasma-polymerized hexamethyldisiloxane coating on 3D printed substrates are non-cytotoxic and effective against respiratory pathogens

Machková,

Vaňková,

Obrová

et al. 2023

Front. Microbiol.

View full text Add to dashboard Cite

Due to the emerging resistance of microorganisms and viruses to conventional treatments, the importance of self-disinfecting materials is highly increasing. Such materials could be silver or its nanoparticles (AgNPs), both of which have been studied for their antimicrobial effect. In this study, we compared the biological effects of AgNP coatings with and without a plasma-polymerized hexamethyldisiloxane (ppHMDSO) protective film to smooth silver or copper coatings under three ambient conditions that mimic their potential medical use (dry or wet environments and an environment simulating the human body). The coatings were deposited on 3D printed polylactic acid substrates by DC magnetron sputtering, and their surface morphology was visualized using scanning electron microscopy. Cytotoxicity of the samples was evaluated using human lung epithelial cells A549. Furthermore, antibacterial activity was determined against the Gram-negative pathogenic bacterium Pseudomonas aeruginosa PAO1 and antiviral activity was assessed using human rhinovirus species A/type 2. The obtained results showed that overcoating of AgNPs with ppHMDSO creates the material with antibacterial and antiviral activity and at the same time without a cytotoxic effect for the surrounding tissue cells. These findings suggest that the production of 3D printed substrates coated with a layer of AgNPs-ppHMDSO could have potential applications in the medical field as functional materials.

show abstract

Section: Discussionmentioning

confidence: 99%

Silver nanoparticles with plasma-polymerized hexamethyldisiloxane coating on 3D printed substrates are non-cytotoxic and effective against respiratory pathogens

Machková,

Vaňková,

Obrová

et al. 2023

Front. Microbiol.

View full text Add to dashboard Cite

show abstract

“…23,24 As a result, PBAT has become a research hotspot in industry and academia at home and abroad. [25][26][27] However, the cost of producing this material is relatively high, and it is difficult to control the relative molecular mass distribution during the synthesis process, so it is necessary to use various techniques to solve these difficulties. 17,[28][29][30] At present, it seems that a single catalyst cannot meet the needs of industrial production, 31,32 and it is necessary to explore new composite catalysts and select suitable improved process equipment and chain extenders to develop the production of PBAT.…”

Section: Introductionmentioning

confidence: 99%

“…Carvalho et al 22 evaluated the biodegradability of PBAT and found that under certain conditions, PBAT can be almost completely degraded by microorganisms without causing harm to the environment 23,24 . As a result, PBAT has become a research hotspot in industry and academia at home and abroad 25–27 . However, the cost of producing this material is relatively high, and it is difficult to control the relative molecular mass distribution during the synthesis process, so it is necessary to use various techniques to solve these difficulties 17,28–30 .…”

Section: Introductionmentioning

confidence: 99%

Porous‐structured vermiculite/polybutylene adipate terephthalate composite films: The morphology, mechanical properties, and nonisothermal degradation kinetics

Xu,

Zhou,

Shang

et al. 2024

Polymer Composites

View full text Add to dashboard Cite

To examine the impact of vermiculite (VMT) on the environmental and physical aspects of polybutylene terephthalate (PBAT), the thermal degradation behavior of VMT/polybutylene terephthalate polyadipate (VMT/PBAT) composite films was investigated by using the thermogravimetric analysis (TGA). To ensure precise calculation of the specific activation energy values of VMT/PBAT composite films in thermal degradation performance experiments, the Kissinger method (K‐method) and Flynn–Wall–Ozawa method (FWO method) were utilized. Additionally, the reaction mechanism was analyzed using the Coats–Redfern equation (CR equation). The introduction of VMT into the PBAT co‐polyester structure leads to an increase in the thermal degradation activation energy Ek of composite films.; the apparent activation energies were calculated by the Coats–Redfern method for different reaction mechanisms, and the interfacial diffusion reaction mechanism of the composite film was determined, with a thermal degradation reaction principle properties of g(α) = [1 − (1 − α)]2 and the number of reaction steps of 2.Highlights VMT/PBAT composite films prepared using a simple method. Analyzing nonisothermal degradation kinetics using K‐method and FWO method. Analyzing the degradation mechanisms using the Coats–Redfern equation. Addition of VMT enhances the thermal degradation properties of composite films. Addition of VMT reduces the mechanical properties of the composite film.

show abstract

Super effective antimicrobial silver-sputtered coatings on poly(lactic acid) against bacteria and omicron SARS-CoV-2

Cited by 2 publications

References 84 publications

Silver nanoparticles with plasma-polymerized hexamethyldisiloxane coating on 3D printed substrates are non-cytotoxic and effective against respiratory pathogens

Silver nanoparticles with plasma-polymerized hexamethyldisiloxane coating on 3D printed substrates are non-cytotoxic and effective against respiratory pathogens

Porous‐structured vermiculite/polybutylene adipate terephthalate composite films: The morphology, mechanical properties, and nonisothermal degradation kinetics

Contact Info

Product

Resources

About