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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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Esmail A, Pereira JR, Sevrin C, Grandfils C, Menda UD, Fortunato E, Oliva A, Freitas F. Preparation and Characterization of Porous Scaffolds Based on Poly(3-hydroxybutyrate) and Poly(3-hydroxybutyrate- co-3-hydroxyvalerate). Life (Basel) 2021; 11:life11090935. [PMID: 34575084 PMCID: PMC8466055 DOI: 10.3390/life11090935] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/01/2021] [Accepted: 09/04/2021] [Indexed: 01/24/2023] Open
Abstract
Poly(hydroxyalkanoates) (PHAs) with different material properties, namely, the homopolymer poly(3-hydroxybutyrate), P(3HB), and the copolymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate, P(3HB-co-3HV), with a 3HV of 25 wt.%, were used for the preparation of porous biopolymeric scaffolds. Solvent casting with particulate leaching (SCPL) and emulsion templating were evaluated to process these biopolymers in porous scaffolds. SCPL scaffolds were highly hydrophilic (>170% swelling in water) but fragile, probably due to the increase of the polymer’s polydispersity index and its high porosity (>50%). In contrast, the emulsion templating technique resulted in scaffolds with a good compromise between porosity (27–49% porosity) and hydrophilicity (>30% water swelling) and without impairing their mechanical properties (3.18–3.35 MPa tensile strength and 0.07–0.11 MPa Young’s Modulus). These specifications are in the same range compared to other polymer-based scaffolds developed for tissue engineering. P(3HB-co-3HV) displayed the best overall properties, namely, lower crystallinity (11.3%) and higher flexibility (14.8% elongation at break. Our findings highlight the potency of our natural biopolyesters for the future development of novel porous scaffolds in tissue engineering, thanks also to their safety and biodegradability.
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Affiliation(s)
- Asiyah Esmail
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal; (A.E.); (J.R.P.)
- UCIBIO—Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
- ITQB NOVA—Instituto de Tecnologia Química e Biológica António Xavier, NOVA University Lisbon, 2780-157 Oeiras, Portugal;
- iBET, Instituto de Biologia Experimental e Tecnológica, 2780-157 Oeiras, Portugal
| | - João R. Pereira
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal; (A.E.); (J.R.P.)
- UCIBIO—Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
| | - Chantal Sevrin
- CEIB—Interfaculty Research Centre of Biomaterials, University of Liège, B-4000 Liège, Belgium; (C.S.); (C.G.)
| | - Christian Grandfils
- CEIB—Interfaculty Research Centre of Biomaterials, University of Liège, B-4000 Liège, Belgium; (C.S.); (C.G.)
| | - Ugur Deneb Menda
- CENIMAT/i3N, Department of Materials Science, Nova School of Sciences and Technology, Nova University Lisbon, 2819-516 Caparica, Portugal; (U.D.M.); (E.F.)
| | - Elvira Fortunato
- CENIMAT/i3N, Department of Materials Science, Nova School of Sciences and Technology, Nova University Lisbon, 2819-516 Caparica, Portugal; (U.D.M.); (E.F.)
| | - Abel Oliva
- ITQB NOVA—Instituto de Tecnologia Química e Biológica António Xavier, NOVA University Lisbon, 2780-157 Oeiras, Portugal;
- iBET, Instituto de Biologia Experimental e Tecnológica, 2780-157 Oeiras, Portugal
| | - Filomena Freitas
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal; (A.E.); (J.R.P.)
- UCIBIO—Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
- Correspondence: ; Tel.: +351-21-294-8300
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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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Silva-Vera W, Avendaño-Muñoz N, Nuñez H, Ramírez C, Almonacid S, Simpson R. CO2 laser drilling coupled with moderate electric fields for enhancement of the mass transfer phenomenon in a tomato (Lycopersicon esculentum) peeling process. J FOOD ENG 2020. [DOI: 10.1016/j.jfoodeng.2019.109870] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Ortiz R, Basnett P, Roy I, Quintana I. Picosecond Laser Ablation of Polyhydroxyalkanoates (PHAs): Comparative Study of Neat and Blended Material Response. Polymers (Basel) 2020; 12:E127. [PMID: 31948096 PMCID: PMC7022290 DOI: 10.3390/polym12010127] [Citation(s) in RCA: 4] [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: 11/29/2019] [Revised: 12/18/2019] [Accepted: 12/20/2019] [Indexed: 11/16/2022] Open
Abstract
Polyhydroxyalkanoates (PHAs) have emerged as a promising biodegradable and biocompatible material for scaffold manufacturing in the tissue engineering field and food packaging. Surface modification is usually required to improve cell biocompatibility and/or reduce bacteria proliferation. Picosecond laser ablation was applied for surface micro structuring of short- and medium-chain length-PHAs and its blend. The response of each material as a function of laser energy and wavelength was analyzed. Picosecond pulsed laser modified the surface topography without affecting the material properties. UV wavelength irradiation showed halved ablation thresholds compared to VIS wavelength, revealing a greater photochemical nature of the ablation process at UV wavelength. Nevertheless, the ablation rate and, therefore, ablation efficiency did not show a clear dependence on beam wavelength. The different mechanical behavior of the considered PHAs did not lead to different ablation thresholds on each polymer at a constant wavelength, suggesting the interplay of the material mechanical parameters to equalize ablation thresholds. Blended-PHA showed a significant reduction in the ablation threshold under VIS irradiation respect to the neat PHAs. Picosecond ablation was proved to be a convenient technique for micro structuring of PHAs to generate surface microfeatures appropriate to influence cell behavior and improve the biocompatibility of scaffolds in tissue engineering.
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Affiliation(s)
- Rocío Ortiz
- Physics of Surfaces and Materials Unit, TEKNIKER, Iñaki Goenaga 5, 20600 Eibar, Spain;
| | - Pooja Basnett
- Applied Biotechnology Research Group, Department of Life Sciences, Faculty of Science and Technology, University of Westminster, London W1W 6UW, UK;
| | - Ipsita Roy
- Department of Materials Science and Engineering, University of Sheffield, North Campus, Broad Lane, Sheffield S3 7HQ, UK
| | - Iban Quintana
- Physics of Surfaces and Materials Unit, TEKNIKER, Iñaki Goenaga 5, 20600 Eibar, Spain;
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Polyhydroxyalkanoates (PHA) for therapeutic applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018. [DOI: 10.1016/j.msec.2017.12.035] [Citation(s) in RCA: 136] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Microfluidics Engineering: Recent Trends, Valorization, and Applications. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2017. [DOI: 10.1007/s13369-017-2662-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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