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Modification of Polyhydroxyalkanoates Polymer Films Surface of Various Compositions by Laser Processing. Polymers (Basel) 2023; 15:polym15030531. [PMID: 36771832 PMCID: PMC9920739 DOI: 10.3390/polym15030531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 01/11/2023] [Accepted: 01/18/2023] [Indexed: 01/22/2023] Open
Abstract
The results of surface modification of solvent casting films made from polyhydroxyalkanoates (PHAs) of various compositions are presented: homopolymer poly-3-hydroxybutyrate P(3HB) and copolymers comprising various combinations of 3-hydroxybutyrate (3HB), 3-hydroxyvalerate (3HV), 4-hydroxybutyrate(4HB), and 3-hydroxyhexanoate (3HHx) monomers treated with a CO2 laser in continuous and quasi-pulsed radiation modes. The effects of PHAs film surface modification, depending on the composition and ratio of monomers according to the results of the study of SEM and AFM, contact angles of wetting with water, adhesion and growth of fibroblasts have been revealed for the laser radiation regime used. Under continuous irradiation with vector lines, melted regions in the form of grooves are formed on the surface of the films, in which most of the samples have increased values of the contact angle and a decrease in roughness. The quasi-pulse mode by the raster method causes the formation of holes without pronounced melted zones, the total area of which is lower by 20% compared to the area of melted grooves. The number of viable fibroblasts NIH 3T3 on the films after the quasi-pulse mode is 1.5-2.0 times higher compared to the continuous mode, and depends to a greater extent on the laser treatment mode than on the PHAs' composition. The use of various modes of laser modification on the surface of PHAs with different compositions makes it possible to influence the morphology and properties of polymer films in a targeted manner. The results that have been obtained contribute to solving the critical issue of functional biodegradable polymeric materials.
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Slepička P, Siegel J, Šlouf M, Fajstavr D, Fajstavrová K, Kolská Z, Švorčík V. The Functionalization of a Honeycomb Polystyrene Pattern by Excimer Treatment in Liquid. Polymers (Basel) 2022; 14:polym14224944. [PMID: 36433071 PMCID: PMC9698802 DOI: 10.3390/polym14224944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 11/10/2022] [Accepted: 11/13/2022] [Indexed: 11/18/2022] Open
Abstract
In this article, we present a unique combination of techniques focusing on the immobilization of noble metal nanoparticles into a honeycomb polystyrene pattern prepared with the improved phase-separation technique. The procedure consists of two main steps: the preparation of the honeycomb pattern (HCP) on a perfluoroethylenepropylene substrate (FEP), followed by an immobilization procedure realized by the honeycomb pattern's exposure to an excimer laser in a noble metal nanoparticle solution. The surface physico-chemical properties, mainly the surface morphology and chemistry, are characterized in detail in the study. The two-step procedure represents the unique architecture of the surface immobilization process, which reveals a wide range of potential applications, mainly in tissue engineering, but also as substrates for analytical use.
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Affiliation(s)
- Petr Slepička
- Department of Solid State Engineering, University of Chemistry and Technology Prague, Technická 5, 16628 Prague, Czech Republic
- Correspondence:
| | - Jakub Siegel
- Department of Solid State Engineering, University of Chemistry and Technology Prague, Technická 5, 16628 Prague, Czech Republic
| | - Miroslav Šlouf
- Innovation Centre of the Institute of Macromolecular Chemistry, Academy of Sciences of Czech Republic, Prague 6 Brevnov, 16200 Prague, Czech Republic
| | - Dominik Fajstavr
- Department of Solid State Engineering, University of Chemistry and Technology Prague, Technická 5, 16628 Prague, Czech Republic
| | - Klára Fajstavrová
- Department of Solid State Engineering, University of Chemistry and Technology Prague, Technická 5, 16628 Prague, Czech Republic
| | - Zdeňka Kolská
- Faculty of Science, J. E. Purkyne University, 40001 Usti Nad Labem, Czech Republic
| | - Václav Švorčík
- Department of Solid State Engineering, University of Chemistry and Technology Prague, Technická 5, 16628 Prague, Czech Republic
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Di Bella S, Luzzati R, Principe L, Zerbato V, Meroni E, Giuffrè M, Crocè LS, Merlo M, Perotto M, Dolso E, Maurel C, Lovecchio A, Dal Bo E, Lagatolla C, Marini B, Ippodrino R, Sanson G. Aspirin and Infection: A Narrative Review. Biomedicines 2022; 10:biomedicines10020263. [PMID: 35203473 PMCID: PMC8868581 DOI: 10.3390/biomedicines10020263] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 01/18/2022] [Accepted: 01/20/2022] [Indexed: 02/01/2023] Open
Abstract
Acetylsalicylic acid (ASA) is one of the most commonly used drugs in the world. It derives from the extract of white willow bark, whose therapeutic potential was known in Egypt since 1534 BC. ASA’s pharmacological effects are historically considered secondary to its anti-inflammatory, platelet-inhibiting properties; however, human studies demonstrating a pro-inflammatory effect of ASA exist. It is likely that we are aware of only part of ASA’s mechanisms of action; moreover, the clinical effect is largely dependent on dosages. During the past few decades, evidence of the anti-infective properties of ASA has emerged. We performed a review of such research in order to provide a comprehensive overview of ASA and viral, bacterial, fungal and parasitic infections, as well as ASA’s antibiofilm properties.
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Affiliation(s)
- Stefano Di Bella
- Clinical Department of Medical, Surgical and Health Sciences, University of Trieste, 34127 Trieste, Italy; (S.D.B.); (R.L.); (L.S.C.); (M.M.); (M.P.); (G.S.)
| | - Roberto Luzzati
- Clinical Department of Medical, Surgical and Health Sciences, University of Trieste, 34127 Trieste, Italy; (S.D.B.); (R.L.); (L.S.C.); (M.M.); (M.P.); (G.S.)
| | - Luigi Principe
- Clinical Pathology and Microbiology Unit, “S. Giovanni di Dio” Hospital, 88900 Crotone, Italy;
| | - Verena Zerbato
- Infectious Diseases Unit, Trieste University Hospital, 34149 Trieste, Italy; (V.Z.); (E.D.); (C.M.); (A.L.)
| | - Elisa Meroni
- Clinical Microbiology and Virology Unit, “A. Manzoni” Hospital, 23900 Lecco, Italy;
| | - Mauro Giuffrè
- Clinical Department of Medical, Surgical and Health Sciences, University of Trieste, 34127 Trieste, Italy; (S.D.B.); (R.L.); (L.S.C.); (M.M.); (M.P.); (G.S.)
- Correspondence: ; Tel.: +39-040-3994-305
| | - Lory Saveria Crocè
- Clinical Department of Medical, Surgical and Health Sciences, University of Trieste, 34127 Trieste, Italy; (S.D.B.); (R.L.); (L.S.C.); (M.M.); (M.P.); (G.S.)
| | - Marco Merlo
- Clinical Department of Medical, Surgical and Health Sciences, University of Trieste, 34127 Trieste, Italy; (S.D.B.); (R.L.); (L.S.C.); (M.M.); (M.P.); (G.S.)
| | - Maria Perotto
- Clinical Department of Medical, Surgical and Health Sciences, University of Trieste, 34127 Trieste, Italy; (S.D.B.); (R.L.); (L.S.C.); (M.M.); (M.P.); (G.S.)
| | - Elisabetta Dolso
- Infectious Diseases Unit, Trieste University Hospital, 34149 Trieste, Italy; (V.Z.); (E.D.); (C.M.); (A.L.)
| | - Cristina Maurel
- Infectious Diseases Unit, Trieste University Hospital, 34149 Trieste, Italy; (V.Z.); (E.D.); (C.M.); (A.L.)
| | - Antonio Lovecchio
- Infectious Diseases Unit, Trieste University Hospital, 34149 Trieste, Italy; (V.Z.); (E.D.); (C.M.); (A.L.)
| | - Eugenia Dal Bo
- Cardiothoracic-Vascular Department, Azienda Sanitaria Universitaria Integrata, Cattinara University Hospital, 34149 Trieste, Italy;
| | - Cristina Lagatolla
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy;
| | - Bruna Marini
- Ulisse BioMed Labs, Area Science Park, 34149 Trieste, Italy; (B.M.); (R.I.)
| | - Rudy Ippodrino
- Ulisse BioMed Labs, Area Science Park, 34149 Trieste, Italy; (B.M.); (R.I.)
| | - Gianfranco Sanson
- Clinical Department of Medical, Surgical and Health Sciences, University of Trieste, 34127 Trieste, Italy; (S.D.B.); (R.L.); (L.S.C.); (M.M.); (M.P.); (G.S.)
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KrF Laser and Plasma Exposure of PDMS-Carbon Composite and Its Antibacterial Properties. MATERIALS 2022; 15:ma15030839. [PMID: 35160785 PMCID: PMC8836707 DOI: 10.3390/ma15030839] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/18/2022] [Accepted: 01/19/2022] [Indexed: 02/01/2023]
Abstract
A polydimethylsiloxane (PDMS) composite with multi-walled carbon nanotubes was successfully prepared. Composite foils were treated with both plasma and excimer laser, and changes in their physicochemical properties were determined in detail. Mainly changes in surface chemistry, wettability, and morphology were determined. The plasma treatment of PDMS complemented with subsequent heating led to the formation of a unique wrinkle-like pattern. The impact of different laser treatment conditions on the composite surface was determined. The morphology was determined by AFM and LCM techniques, while chemical changes and chemical surface mapping were studied with the EDS/EDX method. Selected activated polymer composites were used for the evaluation of antibacterial activity using Gram-positive (Staphylococcus epidermidis) and Gram-negative (Escherichia coli) bacteria. The antibacterial effect was achieved against S. epidermidis on pristine PDMS treated with 500 mJ of laser energy and PDMS-C nanocomposite treated with a lower laser fluence of 250 mJ. Silver deposition of PDMS foil increases significantly its antibacterial properties against E. coli, which is further enhanced by the carbon predeposition or high-energy laser treatment.
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Volova TG, Golubev AI, Nemtsev IV, Lukyanenko AV, Dudaev AE, Shishatskaya EI. Laser Processing of Polymer Films Fabricated from PHAs Differing in Their Monomer Composition. Polymers (Basel) 2021; 13:1553. [PMID: 34066143 PMCID: PMC8151816 DOI: 10.3390/polym13101553] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 05/04/2021] [Accepted: 05/08/2021] [Indexed: 11/23/2022] Open
Abstract
The study reports results of using a CO2-laser in continuous wave (3 W; 2 m/s) and quasi-pulsed (13.5 W; 1 m/s) modes to treat films prepared by solvent casting technique from four types of polyhydroxyalkanoates (PHAs), namely poly-3-hydroxybutyrate and three copolymers of 3-hydroxybutyrate: with 4-hydroxybutyrate, 3-hydroxyvalerate, and 3-hydroxyhexanoate (each second monomer constituting about 30 mol.%). The PHAs differed in their thermal and molecular weight properties and degree of crystallinity. Pristine films differed in porosity, hydrophilicity, and roughness parameters. The two modes of laser treatment altered these parameters and biocompatibility in diverse ways. Films of P(3HB) had water contact angle and surface energy of 92° and 30.8 mN/m, respectively, and average roughness of 144 nm. The water contact angle of copolymer films decreased to 80-56° and surface energy and roughness increased to 41-57 mN/m and 172-290 nm, respectively. Treatment in either mode resulted in different modifications of the films, depending on their composition and irradiation mode. Laser-treated P(3HB) films exhibited a decrease in water contact angle, which was more considerable after the treatment in the quasi-pulsed mode. Roughness parameters were changed by the treatment in both modes. Continuous wave line-by-line irradiation caused formation of sintered grooves on the film surface, which exhibited some change in water contact angle (76-80°) and reduced roughness parameters (to 40-45 mN/m) for most films. Treatment in the quasi-pulsed raster mode resulted in the formation of pits with no pronounced sintered regions on the film surface, a more considerably decreased water contact angle (to 67-76°), and increased roughness of most specimens. Colorimetric assay for assessing cell metabolic activity (MTT) in NIH 3T3 mouse fibroblast culture showed that the number of fibroblasts on the films treated in the continuous wave mode was somewhat lower; treatment in quasi-pulsed radiation mode caused an increase in the number of viable cells by a factor of 1.26 to 1.76, depending on PHA composition. This is an important result, offering an opportunity of targeted surface modification of PHA products aimed at preventing or facilitating cell attachment.
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Affiliation(s)
- Tatiana G. Volova
- Basic Department of Biotechnology, School of Fundamental Biology and Biotechnology, Siberian Federal University, 79 Svobodnyi Av., 660041 Krasnoyarsk, Russia; (I.V.N.); (A.V.L.); (A.E.D.); (E.I.S.)
- Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, 660036 Krasnoyarsk, Russia
| | - Alexey I. Golubev
- L.V. Kirensky Institute of Physics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/38 Akademgorodok, 660036 Krasnoyarsk, Russia;
- Special Design and Technological Bureau ‘Nauka’ Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/45 Akademgorodok, 660036 Krasnoyarsk, Russia
| | - Ivan V. Nemtsev
- Basic Department of Biotechnology, School of Fundamental Biology and Biotechnology, Siberian Federal University, 79 Svobodnyi Av., 660041 Krasnoyarsk, Russia; (I.V.N.); (A.V.L.); (A.E.D.); (E.I.S.)
- L.V. Kirensky Institute of Physics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/38 Akademgorodok, 660036 Krasnoyarsk, Russia;
- Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences” 50 Akademgorodok, 660036 Krasnoyarsk, Russia
| | - Anna V. Lukyanenko
- Basic Department of Biotechnology, School of Fundamental Biology and Biotechnology, Siberian Federal University, 79 Svobodnyi Av., 660041 Krasnoyarsk, Russia; (I.V.N.); (A.V.L.); (A.E.D.); (E.I.S.)
- L.V. Kirensky Institute of Physics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/38 Akademgorodok, 660036 Krasnoyarsk, Russia;
| | - Alexey E. Dudaev
- Basic Department of Biotechnology, School of Fundamental Biology and Biotechnology, Siberian Federal University, 79 Svobodnyi Av., 660041 Krasnoyarsk, Russia; (I.V.N.); (A.V.L.); (A.E.D.); (E.I.S.)
- Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, 660036 Krasnoyarsk, Russia
| | - Ekaterina I. Shishatskaya
- Basic Department of Biotechnology, School of Fundamental Biology and Biotechnology, Siberian Federal University, 79 Svobodnyi Av., 660041 Krasnoyarsk, Russia; (I.V.N.); (A.V.L.); (A.E.D.); (E.I.S.)
- Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, 660036 Krasnoyarsk, Russia
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Gutiérrez-Fernández E, Ezquerra TA, Nogales A, Rebollar E. Straightforward Patterning of Functional Polymers by Sequential Nanosecond Pulsed Laser Irradiation. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1123. [PMID: 33925285 PMCID: PMC8146350 DOI: 10.3390/nano11051123] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/21/2021] [Accepted: 04/23/2021] [Indexed: 12/27/2022]
Abstract
Laser-based methods have demonstrated to be effective in the fabrication of surface micro- and nanostructures, which have a wide range of applications, such as cell culture, sensors or controlled wettability. One laser-based technique used for micro- and nanostructuring of surfaces is the formation of laser-induced periodic surface structures (LIPSS). LIPSS are formed upon repetitive irradiation at fluences well below the ablation threshold and in particular, linear structures are formed in the case of irradiation with linearly polarized laser beams. In this work, we report on the simple fabrication of a library of ordered nanostructures in a polymer surface by repeated irradiation using a nanosecond pulsed laser operating in the UV and visible region in order to obtain nanoscale-controlled functionality. By using a combination of pulses at different wavelengths and sequential irradiation with different polarization orientations, it is possible to obtain different geometries of nanostructures, in particular linear gratings, grids and arrays of nanodots. We use this experimental approach to nanostructure the semiconductor polymer poly(3-hexylthiophene) (P3HT) and the ferroelectric copolymer poly[(vinylidenefluoride-co-trifluoroethylene] (P(VDF-TrFE)) since nanogratings in semiconductor polymers, such as P3HT and nanodots, in ferroelectric systems are viewed as systems with potential applications in organic photovoltaics or non-volatile memories.
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Affiliation(s)
- Edgar Gutiérrez-Fernández
- Instituto de Estructura de la Materia, IEM-CSIC, Serrano 121, 28006 Madrid, Spain; (E.G.-F.); (T.A.E.); (A.N.)
| | - Tiberio A. Ezquerra
- Instituto de Estructura de la Materia, IEM-CSIC, Serrano 121, 28006 Madrid, Spain; (E.G.-F.); (T.A.E.); (A.N.)
| | - Aurora Nogales
- Instituto de Estructura de la Materia, IEM-CSIC, Serrano 121, 28006 Madrid, Spain; (E.G.-F.); (T.A.E.); (A.N.)
| | - Esther Rebollar
- Instituto de Química Física Rocasolano, IQFR-CSIC, Serrano 119, 28006 Madrid, Spain
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Bonse J. Quo Vadis LIPSS?-Recent and Future Trends on Laser-Induced Periodic Surface Structures. NANOMATERIALS 2020; 10:nano10101950. [PMID: 33007873 PMCID: PMC7601024 DOI: 10.3390/nano10101950] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 09/24/2020] [Accepted: 09/29/2020] [Indexed: 02/06/2023]
Abstract
Nanotechnology and lasers are among the most successful and active fields of research and technology that have boomed during the past two decades. Many improvements are based on the controlled manufacturing of nanostructures that enable tailored material functionalization for a wide range of industrial applications, electronics, medicine, etc., and have already found entry into our daily life. One appealing approach for manufacturing such nanostructures in a flexible, robust, rapid, and contactless one-step process is based on the generation of laser-induced periodic surface structures (LIPSS). This Perspective article analyzes the footprint of the research area of LIPSS on the basis of a detailed literature search, provides a brief overview on its current trends, describes the European funding strategies within the Horizon 2020 programme, and outlines promising future directions.
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Affiliation(s)
- Jörn Bonse
- Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, D-12205 Berlin, Germany
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