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Chodkowski M, Terpiłowski K, Románszki L, Klébert S, Mohai M, Károly Z. Effect of Non-Thermal Sulfur Hexafluoride Cold Plasma Modification on Surface Properties of Polyoxymethylene. Chemphyschem 2024; 25:e202300709. [PMID: 38548684 DOI: 10.1002/cphc.202300709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 01/27/2024] [Indexed: 05/24/2024]
Abstract
X-ray photoelectron spectroscopy was employed to reveal the differences in the chemical structure of the topmost layer after plasma modification. It was found out that changes in the surface properties of the polymer could be observed even after 20 seconds of treatment. The surface becomes hydrophobic or superhydrophobic, with the water contact angles up to 160 degrees. Morphological changes and increased roughness can be observed only in the nanoscale, whereas the structure seems to be unaffected in the microscale. As a result of plasma modification a permanent hydrophobic effect was obtained on the polyoxymethylene surface.
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Affiliation(s)
- Michał Chodkowski
- Department of Interfacial Phenomena, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Słlodowska University in Lublin, pl. Marii Curie-Skłodowskiej 3, 20-031, Lublin, Poland
- Department of Technology and Polymer Processing, Faculty of Mechanical Engineering, Lublin University of Technology, ul. Nadbystrzycka 36, 20-618, Lublin, Poland
| | - Konrad Terpiłowski
- Department of Interfacial Phenomena, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Słlodowska University in Lublin, pl. Marii Curie-Skłodowskiej 3, 20-031, Lublin, Poland
| | - Loránd Románszki
- Institute of Materials and Environmental Chemistry, HUN-REN Research Centre for Natural Sciences, Magyar tudósok körútja 2, H 1117, Budapest, Hungary
| | - Szilvia Klébert
- Institute of Materials and Environmental Chemistry, HUN-REN Research Centre for Natural Sciences, Magyar tudósok körútja 2, H 1117, Budapest, Hungary
| | - Miklós Mohai
- Institute of Materials and Environmental Chemistry, HUN-REN Research Centre for Natural Sciences, Magyar tudósok körútja 2, H 1117, Budapest, Hungary
| | - Zoltán Károly
- Institute of Materials and Environmental Chemistry, HUN-REN Research Centre for Natural Sciences, Magyar tudósok körútja 2, H 1117, Budapest, Hungary
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2
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Navascués P, Schütz U, Hanselmann B, Hegemann D. Near-Plasma Chemical Surface Engineering. Nanomaterials (Basel) 2024; 14:195. [PMID: 38251159 PMCID: PMC10819024 DOI: 10.3390/nano14020195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 01/10/2024] [Accepted: 01/12/2024] [Indexed: 01/23/2024]
Abstract
As a new trend in plasma surface engineering, plasma conditions that allow more-defined chemical reactions at the surface are being increasingly investigated. This is achieved by avoiding high energy deposition via ion bombardment during direct plasma exposure (DPE) causing destruction, densification, and a broad variety of chemical reactions. In this work, a novel approach is introduced by placing a polymer mesh with large open area close to the plasma-sheath boundary above the plasma-treated sample, thus enabling near-plasma chemistry (NPC). The mesh size effectively extracts ions, while reactive neutrals, electrons, and photons still reach the sample surface. The beneficial impact of this on the plasma activation of poly (tetrafluoroethylene) (PTFE) to enhance wettability and on the plasma polymerization of siloxanes, combined with the etching of residual hydrocarbons to obtain highly porous SiOx coatings at low temperatures, is discussed. Characterization of the treated samples indicates a predominant chemical modification yielding enhanced film structures and durability.
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Affiliation(s)
- Paula Navascués
- Laboratory for Advanced Fibers, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | | | | | - Dirk Hegemann
- Laboratory for Advanced Fibers, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
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3
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Zarei M, Hosseini Nikoo MM, Alizadeh R, Askarinya A. Synergistic effect of CaCO 3 addition and in-process cold atmospheric plasma treatment on the surface evolution, mechanical properties, and in-vitro degradation behavior of FDM-printed PLA scaffolds. J Mech Behav Biomed Mater 2024; 149:106239. [PMID: 37984285 DOI: 10.1016/j.jmbbm.2023.106239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 11/08/2023] [Accepted: 11/09/2023] [Indexed: 11/22/2023]
Abstract
The ease of processing and biocompatibility of polylactic acid (PLA) have made it a widely used material for fused deposition modeling (FDM)-based 3D printing. In spite of this, PLA suffers from some limitations for its extensive use in tissue engineering applications, including poor wettability, low degradation rate, and insufficient mechanical properties. To address the previously mentioned limitations, this study examined how combining in-process cold atmospheric plasma treatment with the inclusion of CaCO3 influences the properties of FDM-printed PLA scaffolds. Differential scanning calorimetry results showed that by incorporating CaCO3 micro-particles into the PLA matrix, heterogeneous nucleation promoted the matrix's crystalline content. Scanning electron microscopy analysis revealed that the surface of the PLA-CaCO3 scaffold exhibited increased roughness and improved interlayer bonding after undergoing plasma treatment. Atomic force microscopy revealed a significant (up to 80-fold) increase in the roughness value of PLA scaffolds after the incorporation of CaCO3 and subsequent cold plasma treatment. Furthermore, X-ray photoelectron spectroscopy analysis indicated that atmospheric plasma treatment substantially increased the presence of oxygen-containing bonds, leading to a significant reduction in the water contact angle, which decreased from 89° to 37°. According to the tensile test, the tensile modulus (634.1 MPa) and ultimate tensile strength (25.4 MPa) of PLA were markedly increased and reached 914.3 and 37.2 MPa, respectively, for the plasma-treated PLA-CaCO3 (PT-PLA-CaCO3). Additionally, the in-vitro degradation test showed that PT-PLA-CaCO3 scaffold exhibited higher degradation rate compared to the PLA-CaCO3 sample. Based on the obtained results, it appears that in-process cold atmospheric plasma treatment could serve as an efficient and straightforward method to enhance the properties of 3D-printed composite parts, particularly for tissue engineering applications.
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Affiliation(s)
- Masoud Zarei
- Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran
| | | | - Reza Alizadeh
- Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran.
| | - Amirhossein Askarinya
- Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran
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4
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Grządka E, Godek E, Maciołek U, Słowik G, Kwiatkowski M, Terebun P, Zarzeczny D, Pawłat J. Processes occurring in the NaCMC/glauconite suspension under the cold plasma treatment. Influence of plasma on adsorptive and stabilizing properties of the system. Carbohydr Polym 2023; 319:121158. [PMID: 37567687 DOI: 10.1016/j.carbpol.2023.121158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 06/23/2023] [Accepted: 06/26/2023] [Indexed: 08/13/2023]
Abstract
The paper presents the studies on the processes at the interface of the colloidal suspensions composed of clay mineral - glauconite (GT) and polysaccharide - sodium carboxymethyl cellulose (NaCMC) with the cold plasma treatment (CPT). The surface composition and chemical binding in NaCMC and GT changes are determined by means of FTIR and XPS (both methods detected the incorporation of oxygen-related functional groups). Moreover, the additional information about both the textural properties and morphological changes on the surfaces before and after CPT are studied using the BET, CHN, SEM HRTEM and STEM-EDS methods. The elemental mapping and scanning electron microscope imaging confirmed the NaCMC adsorption on GT (carbon mapping) and proved the GT surface lost its "house of card structure" after the CPT. As follows the CPT causes the protonation of NaCMC and the polymer cross-linking whereas the GT sample is more oxidized. Moreover, it was found that a significant improvement in the GT/NaCMC system stability and the NaCMC adsorption on the GT surface were a result of the CPT. The obtained data could be used for the colloidal stability of polymer/solid suspensions, thus providing new opportunities for the chemical industry; particularly for preparation of new functionalized materials.
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Affiliation(s)
- E Grządka
- Faculty of Chemistry, Institute of Chemical Sciences, Maria Curie-Skłodowska University, M. Skłodowskiej Curie 3 Sq., 20-031 Lublin, Poland.
| | - E Godek
- Faculty of Chemistry, Institute of Chemical Sciences, Maria Curie-Skłodowska University, M. Skłodowskiej Curie 3 Sq., 20-031 Lublin, Poland.
| | - U Maciołek
- Faculty of Chemistry, Institute of Chemical Sciences, Maria Curie-Skłodowska University, M. Skłodowskiej Curie 3 Sq., 20-031 Lublin, Poland.
| | - G Słowik
- Faculty of Chemistry, Institute of Chemical Sciences, Maria Curie-Skłodowska University, M. Skłodowskiej Curie 3 Sq., 20-031 Lublin, Poland.
| | - M Kwiatkowski
- Institute of Electrical Engineering and Electrotechnologies, Lublin University of Technology, Nadbystrzycka 38a, 20-618 Lublin, Poland.
| | - P Terebun
- Institute of Electrical Engineering and Electrotechnologies, Lublin University of Technology, Nadbystrzycka 38a, 20-618 Lublin, Poland.
| | - D Zarzeczny
- Institute of Electrical Engineering and Electrotechnologies, Lublin University of Technology, Nadbystrzycka 38a, 20-618 Lublin, Poland.
| | - J Pawłat
- Institute of Electrical Engineering and Electrotechnologies, Lublin University of Technology, Nadbystrzycka 38a, 20-618 Lublin, Poland.
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Marra D, Perna I, Pota G, Vitiello G, Pezzella A, Toscano G, Luciani G, Caserta S. Nanoparticle Coatings on Glass Surfaces to Prevent Pseudomonas fluorescens AR 11 Biofilm Formation. Microorganisms 2023; 11:621. [PMID: 36985196 PMCID: PMC10057769 DOI: 10.3390/microorganisms11030621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/17/2023] [Accepted: 02/18/2023] [Indexed: 03/06/2023] Open
Abstract
Microbial colonization of surfaces is a sanitary and industrial issue for many applications, leading to product contamination and human infections. When microorganisms closely interact with a surface, they start to produce an exo-polysaccaridic matrix to adhere to and protect themselves from adverse environmental conditions. This type of structure is called a biofilm. The aim of our work is to investigate novel technologies able to prevent biofilm formation by surface coatings. We coated glass surfaces with melanin-ZnO2, melanin-TiO2, and TiO2 hybrid nanoparticles. The functionalization was performed using cold plasma to activate glass-substrate-coated surfaces, that were characterized by performing water and soybean oil wetting tests. A quantitative characterization of the antibiofilm properties was done using Pseudomonas fluorescens AR 11 as a model organism. Biofilm morphologies were observed using confocal laser scanning microscopy and image analysis techniques were used to obtain quantitative morphological parameters. The results highlight the efficacy of the proposed surface coating to prevent biofilm formation. Melanin-TiO2 proved to be the most efficient among the particles investigated. Our results can be a valuable support for future implementation of the technique proposed here in an extended range of applications that may include further testing on other strains and other support materials.
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Umair M, Jabbar S, Lin Y, Nasiru MM, Zhang J, Abid M, Murtaza MA, Zhao L. Comparative study: Thermal and non‐thermal treatment on enzyme deactivation and selected quality attributes of fresh carrot juice. Int J Food Sci Technol 2022. [DOI: 10.1111/ijfs.15535] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Muhammad Umair
- Department of Food Science and Engineering College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518060 China
- Key Laboratory of Optoelectronic Devices and Systems College of Physics and Optoelectronic Engineering Ministry of Education and Guangdong Province Shenzhen University Shenzhen 518060 China
| | - Saqib Jabbar
- Food Science Research Institute (FSRI) National Agricultural Research Centre (NARC) Islamabad 46000 Pakistan
| | - Yue Lin
- Department of Food Science and Engineering College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518060 China
| | - Mustapha Muhammad Nasiru
- College of Food Science and Technology Nanjing Agricultural University Nanjing Jiangsu 210095 China
| | - Jianhao Zhang
- College of Food Science and Technology Nanjing Agricultural University Nanjing Jiangsu 210095 China
| | - Muhammad Abid
- Institute of Food and Nutritional Sciences Pir Mehr Ali Shah, Arid Agriculture University Rawalpindi Rawalpindi 44000 Pakistan
| | - Mian Anjum Murtaza
- Institute of Food Science and Nutrition University of Sargodha Sargodha 40100 Pakistan
| | - Liqing Zhao
- Department of Food Science and Engineering College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518060 China
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Berczeli M, Weltsch Z. Enhanced Wetting and Adhesive Properties by Atmospheric Pressure Plasma Surface Treatment Methods and Investigation Processes on the Influencing Parameters on HIPS Polymer. Polymers (Basel) 2021; 13:901. [PMID: 33804234 DOI: 10.3390/polym13060901] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 03/07/2021] [Accepted: 03/13/2021] [Indexed: 01/20/2023] Open
Abstract
The development of bonding technology and coating technologies require the use of modern materials and topologies for the demanding effect and modification of their wetting properties. For the industry, a process modification process that can be integrated into a process is the atmospheric pressure of air operation plasma surface treatment. This can be classified and evaluated based on the wettability, which has a significant impact on the adhesive force. The aim is to improve the wetting properties and to find the relationship between plasma treatment parameters, wetting, and adhesion. High Impact PolyStyrene (HIPS) was used as an experimental material, and then the plasma treatment can be treated with various adjustable parameters. The effect of plasma parameters on surface roughness, wetting contact angle, and using Fowkes theory of the surface energy have been investigated. Seven different plasma jet treatment distances were tested, combined with 5 scan speeds. Samples with the best plasma parameters were prepared from 25 mm × 25 mm overlapping adhesive joints using acrylic/cyanoacrylate. The possibility of creating a completely hydrophilic surface was achieved, where the untreated wetting edge angle decreased from 88.2° to 0° for distilled water and from 62.7° to 0° in the case of ethylene glycol. The bonding strength of High Impact PolyStyrene was increased by plasma treatment by 297%.
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Bormashenko E, Legchenkova I, Navon-venezia S, Frenkel M, Bormashenko Y. Investigation of the Impact of Cold Plasma Treatment on the Chemical Composition and Wettability of Medical Grade Polyvinylchloride. Applied Sciences 2021; 11:300. [DOI: 10.3390/app11010300] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The impact of the Corona, dielectric barrier discharge, and low pressure radiofrequency air plasmas on the chemical composition and wettability of medical grade polyvinylchloride was investigated. Corona plasma treatment exerted the most pronounced increase in the hydrophilization of polyvinylchloride. The specific energy of adhesion of the pristine and plasma-treated Polyvinylchloride (PVC) tubing is reported. Plasma treatment increased markedly the specific free surface energy of PVC. The kinetics of hydrophobic recovery following plasma treatment was explored. The time evolution of the apparent contact angle under the hydrophobic recovery is satisfactorily described by the exponential fitting. Energy-dispersive X-ray spectroscopy of the chemical composition of the near-surface layers of the plasma-treated catheters revealed their oxidation. The effect of the hydrophobic recovery hardly correlated with oxidation of the polymer surface, which is irreversible and it is reasonably attributed to the bulk mobility of polymer chains.
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9
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Jiang YH, Cheng JH, Sun DW. Effects of plasma chemistry on the interfacial performance of protein and polysaccharide in emulsion. Trends Food Sci Technol 2020. [DOI: 10.1016/j.tifs.2020.02.009] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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10
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Károly Z, Kalácska G, Sukumaran J, Fauconnier D, Kalácska Á, Mohai M, Klébert S. Effect of Atmospheric Cold Plasma Treatment on the Adhesion and Tribological Properties of Polyamide 66 and Poly(Tetrafluoroethylene). Materials (Basel) 2019; 12:E658. [PMID: 30813237 PMCID: PMC6416590 DOI: 10.3390/ma12040658] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 02/14/2019] [Accepted: 02/18/2019] [Indexed: 11/16/2022]
Abstract
The surfaces of two engineering polymers including polyamide 66 (PA66) and polytetrafluoroethylene (PTFE) were treated by diffuse coplanar surface barrier discharges in atmospheric air. We found that plasma treatment improved the adhesion of PA66 for either polymer/polymer or polymer/steel joints, however, it was selective for the investigated adhesive agents. For PTFE the adhesion was unaltered for plasma treatment regardless the type of used adhesive. Tribological properties were slightly improved for PA66, too. Both the friction coefficient and wear decreased. Significant changes, again, could not be detected for PTFE. The occurred variation in the adhesion and tribology was discussed on the basis of the occurred changes in surface chemistry, wettability and topography of the polymer surface.
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Affiliation(s)
- Zoltán Károly
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences Hungarian Academy of Sciences, Magyar tudósok krt. 2., H-1117 Budapest, Hungary.
| | - Gábor Kalácska
- Institute for Mechanical Engineering Technology, Szent István University, Páter Károly u.1, H-2100 Gödöllő, Hungary.
| | - Jacob Sukumaran
- Ghent University, Laboratory Soete, Technologiepark Zwijnaarde 903, B-9052 Gent, Belgium.
| | - Dieter Fauconnier
- Ghent University, Laboratory Soete, Technologiepark Zwijnaarde 903, B-9052 Gent, Belgium.
| | - Ádám Kalácska
- Ghent University, Laboratory Soete, Technologiepark Zwijnaarde 903, B-9052 Gent, Belgium.
| | - Miklós Mohai
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences Hungarian Academy of Sciences, Magyar tudósok krt. 2., H-1117 Budapest, Hungary.
| | - Szilvia Klébert
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences Hungarian Academy of Sciences, Magyar tudósok krt. 2., H-1117 Budapest, Hungary.
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Macgregor M, Vasilev K. Perspective on Plasma Polymers for Applied Biomaterials Nanoengineering and the Recent Rise of Oxazolines. Materials (Basel) 2019; 12:E191. [PMID: 30626075 PMCID: PMC6337614 DOI: 10.3390/ma12010191] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 12/21/2018] [Accepted: 01/02/2019] [Indexed: 11/16/2022]
Abstract
Plasma polymers are unconventional organic thin films which only partially share the properties traditionally attributed to polymeric materials. For instance, they do not consist of repeating monomer units but rather present a highly crosslinked structure resembling the chemistry of the precursor used for deposition. Due to the complex nature of the deposition process, plasma polymers have historically been produced with little control over the chemistry of the plasma phase which is still poorly understood. Yet, plasma polymer research is thriving, in par with the commercialisation of innumerable products using this technology, in fields ranging from biomedical to green energy industries. Here, we briefly summarise the principles at the basis of plasma deposition and highlight recent progress made in understanding the unique chemistry and reactivity of these films. We then demonstrate how carefully designed plasma polymer films can serve the purpose of fundamental research and biomedical applications. We finish the review with a focus on a relatively new class of plasma polymers which are derived from oxazoline-based precursors. This type of coating has attracted significant attention recently due to its unique properties.
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Affiliation(s)
- Melanie Macgregor
- School of Engineering, University of South Australia, Adelaide, SA 5000, Australia.
- Future Industries Institute, University of South Australia, Adelaide, SA 5000, Australia.
| | - Krasimir Vasilev
- School of Engineering, University of South Australia, Adelaide, SA 5000, Australia.
- Future Industries Institute, University of South Australia, Adelaide, SA 5000, Australia.
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12
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Shapira Y, Chaniel G, Bormashenko E. Surface charging by the cold plasma discharge of lentil and pepper seeds in comparison with polymers. Colloids Surf B Biointerfaces 2018; 172:541-544. [DOI: 10.1016/j.colsurfb.2018.09.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 08/13/2018] [Accepted: 09/02/2018] [Indexed: 11/29/2022]
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Barnea Y, Hammond DC, Geffen Y, Navon-Venezia S, Goldberg K. Plasma Activation of a Breast Implant Shell in Conjunction With Antibacterial Irrigants Enhances Antibacterial Activity. Aesthet Surg J 2018; 38:1188-1196. [PMID: 29378017 DOI: 10.1093/asj/sjy020] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Infection and capsular contracture are two of the most significant complications of breast-implant surgery. Both complications are associated with bacterial contamination of the implant surface. Plasma activation of the surface of a silicone breast implant changes its surface properties from water repelling (hydrophobic) to water absorbing (hydrophilic), thus making it possible for antibacterial irrigants to temporarily adsorb onto the implant surface. OBJECTIVES To support our hypothesis that by changing the surface properties we could render antibacterial irrigation more effective in inhibiting bacterial growth on a breast implant shell. METHODS An in vitro study using silicone discs cut from a textured silicone breast implant shell was performed by treating some of the discs with plasma activation and then exposing the discs to contamination with either Staphylococcus aureus or Pseudomonas aeruginosa and then variously treating the discs with 10% povidone iodine, Cefazolin, or Gentamicin. Bacterial contamination was verified and counted using contact plates as well as culture media. RESULTS Plasma activation changed the wetting properties of the disc's surface from hydrophobic to hydrophilic. Nonplasma activated contaminated discs demonstrated clear bacterial growth both in the untreated group and in the antibacterial-treated group. Combining antibacterial treatment with plasma activation resulted in complete inhibition of bacterial growth in each of the groups treated with antibacterial irrigants. CONCLUSIONS Combining plasma activation with topical antibacterial irrigants can inhibit the growth of bacteria on implant shell discs. By changing the properties of the surface from hydrophobic to hydrophilic, the adsorption of the antibacterial irrigants is enhanced.
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Affiliation(s)
- Yoav Barnea
- Department of Plastic Surgery, Tel-Aviv Sourasky Medical Center, affiliated with the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | | | | | - Shiri Navon-Venezia
- Department of Molecular Biology, Faculty of Natural Sciences, Ariel University, Ariel, Israel
| | - Keren Goldberg
- Clinical Microbiology Laboratory, Rambam Health Care Campus, Haifa, Israel
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14
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Memos G, Lidorikis E, Kokkoris G. Roughness Evolution and Charging in Plasma-Based Surface Engineering of Polymeric Substrates: The Effects of Ion Reflection and Secondary Electron Emission. Micromachines (Basel) 2018; 9:E415. [PMID: 30424348 PMCID: PMC6187714 DOI: 10.3390/mi9080415] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 08/04/2018] [Accepted: 08/16/2018] [Indexed: 11/18/2022]
Abstract
The interaction of plasma with polymeric substrates generates both roughness and charging on the surface of the substrates. This work, toward the comprehension and, finally, the control of plasma-induced surface roughness, delves into the intertwined effects of surface charging, ion reflection, and secondary electron-electron emission (SEEE) on roughness evolution during plasma etching of polymeric substrates. For this purpose, a modeling framework consisting of a surface charging module, a surface etching model, and a profile evolution module is utilized. The case study is etching of a poly(methyl methacrylate) (PMMA) substrate by argon plasma. Starting from an initial surface profile with microscale roughness, the results show that the surface charging contributes to a faster elimination of the roughness compared to the case without charging, especially when ion reflection is taken into account. Ion reflection sustains roughness; without ion reflection, roughness is eliminated. Either with or without ion reflection, the effect of SEEE on the evolution of the rms roughness over etching time is marginal. The mutual interaction of the roughness and the charging potential is revealed through the correlation of the charging potential with a parameter combining rms roughness and skewness of the surface profile. A practical implication of the current study is that the elimination or the reduction of surface charging will result in greater surface roughness of polymeric, and generally dielectric, substrates.
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Affiliation(s)
- George Memos
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", Agia Paraskevi 15310, Greece.
- Department of Materials Science and Engineering, University of Ioannina, Ioannina 45110, Greece.
| | - Elefterios Lidorikis
- Department of Materials Science and Engineering, University of Ioannina, Ioannina 45110, Greece.
| | - George Kokkoris
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", Agia Paraskevi 15310, Greece.
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15
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Shapira Y, Multanen V, Whyman G, Bormashenko Y, Chaniel G, Barkay Z, Bormashenko E. Plasma treatment switches the regime of wetting and floating of pepper seeds. Colloids Surf B Biointerfaces 2017. [PMID: 28633122 DOI: 10.1016/j.colsurfb.2017.06.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cold radiofrequency plasma treatment modified wetting and floating regimes of pepper seeds. The wetting regime of plasma-treated seeds was switched from the Wenzel-like partial wetting to the complete wetting. No hydrophobic recovery following the plasma treatment was registered. Environmental scanning electron microscopy of the fine structure of the (three-phase) triple line observed with virgin and plasma-treated seeds is reported. Plasma treatment promoted rapid sinking of pepper seeds placed on the water/air interface. Plasma treatment did not influence the surface topography of pepper seeds, while charged them electrically. Electrostatic repulsion of floating plasma-treated seeds was observed. The surface charge density was estimated from the data extracted from floating of charged seeds and independently with the electrostatic pendulum as σ≈1-2μC/m2.
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Affiliation(s)
- Yekaterina Shapira
- Ariel University, Engineering Faculty, Department of Chemical Engineering, Biotechnology and Materials, 407000, P.O.B. 3, Ariel, Israel
| | - Victor Multanen
- Ariel University, Engineering Faculty, Department of Chemical Engineering, Biotechnology and Materials, 407000, P.O.B. 3, Ariel, Israel
| | - Gene Whyman
- Ariel University, Natural Sciences Faculty, Physics Department, 407000, P.O.B. 3, Ariel, Israel
| | - Yelena Bormashenko
- Ariel University, Engineering Faculty, Department of Chemical Engineering, Biotechnology and Materials, 407000, P.O.B. 3, Ariel, Israel
| | - Gilad Chaniel
- Ariel University, Natural Sciences Faculty, Physics Department, 407000, P.O.B. 3, Ariel, Israel
| | - Zahava Barkay
- Wolfson Applied Materials Research Center, Tel Aviv University, Ramat-Aviv, 69978, Israel
| | - Edward Bormashenko
- Ariel University, Engineering Faculty, Department of Chemical Engineering, Biotechnology and Materials, 407000, P.O.B. 3, Ariel, Israel.
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Pogreb R, Loew R, Bormashenko E, Whyman G, Multanen V, Shulzinger E, Abramovich A, Rozban D, Shulzinger A, Zussman E, Arinstein A, Vasilyev G, Malkin AY. Relaxation spectra of polymers and phenomena of electrical and hydrophobic recovery: Interplay between bulk and surface properties of polymers. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/polb.24260] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Roman Pogreb
- Physics Department Faculty of Natural Sciences; Ariel University; P.O.B. 3 Ariel 407000 Israel
| | - Ron Loew
- Chemical Engineering and Biotechnology Department, Faculty of Engineering; Ariel University; P.O.B. 3 Ariel 407000 Israel
| | - Edward Bormashenko
- Physics Department Faculty of Natural Sciences; Ariel University; P.O.B. 3 Ariel 407000 Israel
- Chemical Engineering and Biotechnology Department, Faculty of Engineering; Ariel University; P.O.B. 3 Ariel 407000 Israel
| | - Gene Whyman
- Physics Department Faculty of Natural Sciences; Ariel University; P.O.B. 3 Ariel 407000 Israel
| | - Victor Multanen
- Chemical Engineering and Biotechnology Department, Faculty of Engineering; Ariel University; P.O.B. 3 Ariel 407000 Israel
| | - Evgeny Shulzinger
- Physics Department Faculty of Natural Sciences; Ariel University; P.O.B. 3 Ariel 407000 Israel
| | - Amir Abramovich
- Department of Electrical and Electronic Engineering, Faculty of Engineering; Ariel University; P.O.B. 3 Ariel 407000 Israel
| | - Daniel Rozban
- Department of Electrical and Electronic Engineering, Faculty of Engineering; Ariel University; P.O.B. 3 Ariel 407000 Israel
| | - Alexander Shulzinger
- Department of Electrical and Electronic Engineering, Faculty of Engineering; Ariel University; P.O.B. 3 Ariel 407000 Israel
| | - Eyal Zussman
- Faculty of Mechanical Engineering; Israel Institute of Technology, Technion; Haifa 32000 Israel
| | - Arkadii Arinstein
- Faculty of Mechanical Engineering; Israel Institute of Technology, Technion; Haifa 32000 Israel
| | - Gleb Vasilyev
- Faculty of Mechanical Engineering; Israel Institute of Technology, Technion; Haifa 32000 Israel
| | - Alexander Ya. Malkin
- Institute of Petrochemical Synthesis, Russian Academy of Sciences; Moscow Russia
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Bormashenko E, Eldar B, Chaniel G, Multanen V, Whyman G. Influence of cold radiofrequency air and nitrogen plasmas treatment on wetting of polypropylene by the liquid epoxy resin. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.07.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Multanen V, Pogreb R, Bormashenko Y, Shulzinger E, Whyman G, Frenkel M, Bormashenko E. Under-Liquid Self-Assembly of Submerged Buoyant Polymer Particles. Langmuir 2016; 32:5714-20. [PMID: 27193509 DOI: 10.1021/acs.langmuir.6b00636] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The self-assembly of submerged cold-plasma-treated polyethylene beads (PBs) is reported. The plasma-treated immersed millimetrically sized PBs formed well-ordered 2D quasicrystalline structures. The submerged floating of "light" (buoyant) PBs is possible because of the energy gain achieved by the wetting of the high-energy plasma-treated polymer surface prevailing over the energy loss due to the upward climb of the liquid over the beads. The capillary "immersion" attraction force is responsible for the observed self-assembly. The observed 2D quasicrystalline structures demonstrate "dislocations" and "point defects". The mechanical vibration of self-assembled rafts built of PBs leads to the healing of point defects. The immersion capillary lateral force governs the self-assembly, whereas the elastic force is responsible for the repulsion of polymer beads.
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Affiliation(s)
- Victor Multanen
- Chemical Engineering and Biotechnology Department, Ariel University , P.O. Box 3, 40700 Ariel, Israel
| | - Roman Pogreb
- Physics Department, Natural Science Faculty, Ariel University , P.O. Box 3, 40700 Ariel, Israel
| | - Yelena Bormashenko
- Chemical Engineering and Biotechnology Department, Ariel University , P.O. Box 3, 40700 Ariel, Israel
- Physics Department, Natural Science Faculty, Ariel University , P.O. Box 3, 40700 Ariel, Israel
| | - Evgeny Shulzinger
- Physics Department, Natural Science Faculty, Ariel University , P.O. Box 3, 40700 Ariel, Israel
| | - Gene Whyman
- Physics Department, Natural Science Faculty, Ariel University , P.O. Box 3, 40700 Ariel, Israel
| | - Mark Frenkel
- Physics Department, Natural Science Faculty, Ariel University , P.O. Box 3, 40700 Ariel, Israel
| | - Edward Bormashenko
- Chemical Engineering and Biotechnology Department, Ariel University , P.O. Box 3, 40700 Ariel, Israel
- Physics Department, Natural Science Faculty, Ariel University , P.O. Box 3, 40700 Ariel, Israel
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Bormashenko E, Multanen V, Chaniel G, Grynyov R, Shulzinger E, Pogreb R, Whyman G. Phenomenological model of wetting charged dielectric surfaces and its testing with plasma-treated polymer films and inflatable balloons. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.09.065] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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