Polymers and Nanostructures: Coating Meets Biology

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Surface Coatings for Biomedicine and Bioengineering".

Deadline for manuscript submissions: 15 July 2024 | Viewed by 10079

Special Issue Editor


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Guest Editor
Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, Italy
Interests: nanomaterials; biomaterials; carbon nanostructures; composite and hybrid materials; biomedical applications of functional materials; therapeutic devices; surface chemistry
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Special Issue Information

Dear Colleagues,

Nanotechnology greatly impacts modern society by introducting different kinds of nanomaterials for applications in different technological fields, including chemistry, engineering, materials science, and nanomedicine. Different nanostructures have been proposed in the literature, including silica, carbon, and metal nanoparticles. Such nanostructures are often functionalized to improve their performances in taioloired applications. This Special Issue aims to be a platform for scientists working on polymer coating of nanostructures, sharing new insights in the employment of functional polymers for conferring specific biological activities to the resulting hybrid nanoscrtuctures.

In particular, the topics of interest include, but are not limited to:

• Covalent and non-covalent functionalization routes with macromolecules;
• Development of instrumental and functional characterization techniques;
• Innovative application opportunities;
• Key advantages and limitation in long-term use.

Dr. Giuseppe Cirillo
Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Coatings is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (4 papers)

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Research

16 pages, 22623 KiB  
Article
Wound Coating Collagen-Based Composites with Ag Nanoparticles: Synthesis, Structure and Biological Activity
by Alexander Vasil’kov, Natalya Tseomashko, Anastasia Tretyakova, Aziza Abidova, Ivan Butenko, Alexander Pereyaslavtsev, Natalia Arkharova, Vladimir Volkov and Eleonora Shtykova
Coatings 2023, 13(8), 1315; https://doi.org/10.3390/coatings13081315 - 27 Jul 2023
Cited by 2 | Viewed by 1136
Abstract
The search for materials for a new generation of wound coatings is important due to the increase in antibiotic-resistant microorganisms and the number of patients with untreatable chronic purulent wounds. Metal nanoparticles, specifically silver nanoparticles, have antimicrobial activity and do not induce known [...] Read more.
The search for materials for a new generation of wound coatings is important due to the increase in antibiotic-resistant microorganisms and the number of patients with untreatable chronic purulent wounds. Metal nanoparticles, specifically silver nanoparticles, have antimicrobial activity and do not induce known bacterial resistance. To obtain new Ag-containing nanocomposites, type I collagen was extracted by an enzyme–acid method from cattle tendons. Silver nanoparticles were obtained by an environmentally safe method, metal-vapor synthesis (MVS), which enables obtaining metal nanoparticles without impurities. For this, metal vapors were cocondensed in a vacuum of 10−2 Pa on the walls of a quartz reactor cooled to 77 K using acetone as an organic dispersion medium. The composition of the collagen surface was determined by XPS using the spectra of C1s, N1s, and O1s. The presence of a peak with a binding energy of approximately 368.57 eV in the Ag 3d5/2 spectrum indicates the state of Ag0 silver atoms in the nanocomposite. SEM images showed that collagen contributes to the effective stabilization of Ag nanoparticles with an average size of 13.0 ± 3.5 nm. It was found that collagen is non-toxic and biocompatible with skin cells and fibroblasts. The collagen–Ag nanoparticle nanocomposites exhibited antimicrobial activity against bacteria Bacillus subtilis, Escherichia coli, and fungi Aspergillus niger. Full article
(This article belongs to the Special Issue Polymers and Nanostructures: Coating Meets Biology)
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15 pages, 4412 KiB  
Article
The Correlation between Air and Water Vapour Permeability of Textiles
by Karel Adámek, Antonin Havelka, Zdenek Kůs and Adnan Mazari
Coatings 2023, 13(1), 163; https://doi.org/10.3390/coatings13010163 - 11 Jan 2023
Viewed by 1366
Abstract
The permeability of fiber-based materials and general medical textiles is very important, and it is commonly believed that air permeability and water permeability are correlated. This property is expressed as the breathability of the material. Knowing the air permeability is helpful in predicting [...] Read more.
The permeability of fiber-based materials and general medical textiles is very important, and it is commonly believed that air permeability and water permeability are correlated. This property is expressed as the breathability of the material. Knowing the air permeability is helpful in predicting the water vapour permeability as well, but whether this really works for textiles at different pressures and humidities still needs to be explored. In this study, this hypothesis is examined, and it is discovered that this phenomenon does not show significant corelation. Moreover, the non-standardised unit of measurement of breathability makes the comparison much more complex in terms of textiles. The articles focuses on any possible relationship between the air and water vapour permeability of textiles. Full article
(This article belongs to the Special Issue Polymers and Nanostructures: Coating Meets Biology)
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15 pages, 4331 KiB  
Article
Bimetallic Assembled Silver Nanoparticles Impregnated in Aspergillus fumigatus Extract Damage the Bacterial Membrane Surface and Release Cellular Contents
by Saddam Saqib, Saima Faryad, Muhammad Irfan Afridi, Bushra Arshad, Muhammad Younas, Muhammad Naeem, Wajid Zaman, Fazal Ullah, Momina Nisar, Sajid Ali, Abdallah M. Elgorban, Asad Syed, Hosam O. Elansary and Tarek K. Zin El-Abedin
Coatings 2022, 12(10), 1505; https://doi.org/10.3390/coatings12101505 - 09 Oct 2022
Cited by 44 | Viewed by 2407
Abstract
The bactericidal effects of nanomaterials play an essential role in cytoplasmic leakage, leading to bacterial cell death. In this study, silver nanoparticles (AgNPs) were synthesized using a fungal extract of Aspergillus fumigatus (A. fumigatus). The physicochemical properties of the bare and myco-synthesized [...] Read more.
The bactericidal effects of nanomaterials play an essential role in cytoplasmic leakage, leading to bacterial cell death. In this study, silver nanoparticles (AgNPs) were synthesized using a fungal extract of Aspergillus fumigatus (A. fumigatus). The physicochemical properties of the bare and myco-synthesized AgNPs (MS-AgNPs) were examined by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, ultraviolet–visible (UV–vis) spectroscopy, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and transmission electron microscopy (TEM). XRD revealed the crystalline structure of the prepared NPs. The FTIR spectrum of the MS-AgNPs revealed the presence of the stretching vibrations of hydroxyl (−OH) and carbonyl groups (C=O). The UV results showed absorption from 450 nm to 590 nm, confirming the synthesis of the AgNPs. SEM and TEM showed rough cubic shapes (spheres), 20–60 nm in size, while EDX confirmed the presence of 60% Ag in the sample. The MS-AgNPs revealed the highest antibacterial activity against Staphylococcus aureus, with a zone of inhibition of 18.21 ± 2.1 mm, followed by Shigella dysenteriae and Salmonella typhi. The bimetallic-AgNPs played a vital role in cell membrane damage and the release of cellular contents, specifically nucleic acids and proteins. These results suggest that MS-AgNPs have promising antimicrobial capabilities and might be beneficial for an extensive array of biological applications. Full article
(This article belongs to the Special Issue Polymers and Nanostructures: Coating Meets Biology)
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17 pages, 9354 KiB  
Article
Icariin-Functionalized Coating on TiO2 Nanotubes Surface to Improve Osteoblast Activity In Vitro and Osteogenesis Ability In Vivo
by Aobo Ma, Haiyan Shang, Yunjia Song, Bo Chen, Yapeng You, Wen Han, Xu Zhang, Wenyi Zhang, Ying Li and Changyi Li
Coatings 2019, 9(5), 327; https://doi.org/10.3390/coatings9050327 - 18 May 2019
Cited by 15 | Viewed by 3736
Abstract
Surface modification of titanium is encouraged to facilitate early osseointegration in dental and orthopedic fields. Icariin is the main active constituents of Herba Epimedii, which has good bone-promoting ability. We established an icariin-functionalized coating composed of icariin and poly (lactic-co-glycolic acid) (PLGA) on [...] Read more.
Surface modification of titanium is encouraged to facilitate early osseointegration in dental and orthopedic fields. Icariin is the main active constituents of Herba Epimedii, which has good bone-promoting ability. We established an icariin-functionalized coating composed of icariin and poly (lactic-co-glycolic acid) (PLGA) on TiO2 nanotubes surface (NT-ICA-PLGA) to promote osteoblast cell activity and early osseointegration. Surface topography, wettability and drug release pattern of the established NT-ICA-PLGA surface were characterized by scanning electron microscopy (SEM), contact angle test and drug release test. MC3T3-E1 osteoblast cell activity tests were performed using SEM, immunofluorescent staining, cell counting kit-8 and alkaline phosphatase assays. The osteogenic effects of different surfaces were observed using a rat model. Surface characterization proved the successful fabrication of the icariin-functionalized coating on the TiO2 nanotube structure, with increased wettability. The NT-ICA-PLGA substrate showed sustained release of icariin until two weeks. Osteoblast cells grown on the NT-ICA-PLGA substrate displayed improved cell adhesion, proliferation and differentiation ability than the control Ti surface. The in vivo experiment also revealed superior bone forming ability on the NT-ICA-PLGA surface, compared to the pure Ti control. These results imply that the developed NT-ICA-PLGA substrate has a promising future use as functionalized coating for implant surface modification. Full article
(This article belongs to the Special Issue Polymers and Nanostructures: Coating Meets Biology)
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