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Shi Z, Liu L, Chen H, Tang C, Yu J, Fan Y. Preparation of Janus film for fog water collection via layer-by-layer assembling of nanocellulose and nanochitin on PLA. Carbohydr Polym 2024; 323:121369. [PMID: 37940268 DOI: 10.1016/j.carbpol.2023.121369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 08/15/2023] [Accepted: 09/05/2023] [Indexed: 11/10/2023]
Abstract
In order to explore the possibility of natural carbohydrate polymers as a biodegradable and sustainable fog water harvesting material, this work proposed an efficient substrate (hydrophobic)-transition layer (amphoteric)-coating (hydrophilic) sandwich spin-coating strategy to form all biomass-based Janus film. The oxalic acid hydrolyzed nanochitin (OAChN) was applied as a transition layer that enabled successful spin-coating of the hydrophilic nanocellulose (TEMPO-oxidized cellulose nanofiber, TOCN) and nanochitin (partially deacetylated chitin nanofibers, DEChN) on the hydrophobic polylactic acid (PLA) film substrate. In which a layer-by-layer (LBL) assembling of TOCN (carboxyl-rich negative surface charge) and DEChN (amino-rich positive surface charge) was designed to form a thickness and surface property controllable polysaccharide coating on PLA. The finally formed PLA-OAChN-TOCN/DEChN (LBL) film showed hydrophilic and hydrophobic heteromeric faces at the opposite sides and thus had improved fog water collection capacity of 90.85 mg·cm-2·h-1 (30 layers of TOCN/DEChN spin-coated on PLA), which was 276 % higher than the pure PLA film. The transition layer engaged sandwich spin-coating strategy, together with LBL assembling method proposed in this study provided a feasible fabrication of all biomass-based fog water collectors (FWC) that could contribute to alleviating water shortage.
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Affiliation(s)
- Zicong Shi
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Liang Liu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Huangjingyi Chen
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Chong Tang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Juan Yu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Yimin Fan
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China.
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2
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Mura F, Cognigni F, Ferroni M, Morandi V, Rossi M. Advances in Focused Ion Beam Tomography for Three-Dimensional Characterization in Materials Science. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5808. [PMID: 37687502 PMCID: PMC10488958 DOI: 10.3390/ma16175808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/10/2023] [Accepted: 08/11/2023] [Indexed: 09/10/2023]
Abstract
Over the years, FIB-SEM tomography has become an extremely important technique for the three-dimensional reconstruction of microscopic structures with nanometric resolution. This paper describes in detail the steps required to perform this analysis, from the experimental setup to the data analysis and final reconstruction. To demonstrate the versatility of the technique, a comprehensive list of applications is also summarized, ranging from batteries to shale rocks and even some types of soft materials. Moreover, the continuous technological development, such as the introduction of the latest models of plasma and cryo-FIB, can open the way towards the analysis with this technique of a large class of soft materials, while the introduction of new machine learning and deep learning systems will not only improve the resolution and the quality of the final data, but also expand the degree of automation and efficiency in the dataset handling. These future developments, combined with a technique that is already reliable and widely used in various fields of research, are certain to become a routine tool in electron microscopy and material characterization.
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Affiliation(s)
- Francesco Mura
- Department of Basic and Applied Sciences, University of Rome “La Sapienza”, Via Antonio Scarpa 14, 00161 Rome, Italy; (F.C.); (M.R.)
| | - Flavio Cognigni
- Department of Basic and Applied Sciences, University of Rome “La Sapienza”, Via Antonio Scarpa 14, 00161 Rome, Italy; (F.C.); (M.R.)
| | - Matteo Ferroni
- National Research Council of Italy, Institute for Microelectronics and Microsystems, Section of Bologna, Via Piero Gobetti 101, 40129 Bologna, Italy; (M.F.); (V.M.)
- Department of Civil, Environmental, Architectural Engineering and Mathematics (DICATAM), University of Brescia, Via Branze 43, 25123 Brescia, Italy
| | - Vittorio Morandi
- National Research Council of Italy, Institute for Microelectronics and Microsystems, Section of Bologna, Via Piero Gobetti 101, 40129 Bologna, Italy; (M.F.); (V.M.)
| | - Marco Rossi
- Department of Basic and Applied Sciences, University of Rome “La Sapienza”, Via Antonio Scarpa 14, 00161 Rome, Italy; (F.C.); (M.R.)
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3
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Acceleration of Electrospun PLA Degradation by Addition of Gelatin. Int J Mol Sci 2023; 24:ijms24043535. [PMID: 36834947 PMCID: PMC9966984 DOI: 10.3390/ijms24043535] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 02/01/2023] [Accepted: 02/07/2023] [Indexed: 02/12/2023] Open
Abstract
Biocompatible polyesters are widely used in biomedical applications, including sutures, orthopedic devices, drug delivery systems, and tissue engineering scaffolds. Blending polyesters with proteins is a common method of tuning biomaterial properties. Usually, it improves hydrophilicity, enhances cell adhesion, and accelerates biodegradation. However, inclusion of proteins to a polyester-based material typically reduces its mechanical properties. Here, we describe the physicochemical properties of an electrospun polylactic acid (PLA)-gelatin blend with a 9:1 PLA:gelatin ratio. We found that a small content (10 wt%) of gelatin does not affect the extensibility and strength of wet electrospun PLA mats but significantly accelerates their in vitro and in vivo decomposition. After a month, the thickness of PLA-gelatin mats subcutaneously implanted in C57black mice decreased by 30%, while the thickness of the pure PLA mats remained almost unchanged. Thus, we suggest the inclusion of a small amount of gelatin as a simple tool to tune the biodegradation behavior of PLA mats.
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4
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Wood MJ, Brock G, Debray J, Servio P, Kietzig AM. Robust Anti-Icing Surfaces Based on Dual Functionality─Microstructurally-Induced Ice Shedding with Superimposed Nanostructurally-Enhanced Water Shedding. ACS APPLIED MATERIALS & INTERFACES 2022; 14:47310-47321. [PMID: 36194885 DOI: 10.1021/acsami.2c16972] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Research into anti-icing surfaces often conflates the two separate problems of ice accumulation: water adhesion and ice adhesion. The body feathers of perpetually ice-free penguins are very good natural examples of anti-icing surfaces, which use two different mitigation strategies for the two disparate problems. Herein, we mimic the form of the feather's wire-like structure, which is decorated with superimposed nanogrooves by laser micromachining fine woven wire cloths. Post-processing techniques also allow us to isolate the role of surface chemistry by creating both hydrophilic and hydrophobic versions of the synthetic anti-icing surfaces. Our results show that water-shedding and ice-shedding characteristics are indeed derived from different physical functions of the hierarchical structure. The microstructure of the woven wire cloth leads to facile interfacial cracking and therefore extremely low ice adhesion strengths; the superimposed laser-induced periodic surface structures with hydrophobic surface chemistry lead to water shedding. Our work shows that by first taking a fracture mechanics approach to designing the ice-shedding function, a robust anti-icing surface can be engineered by separately designing the water-shedding functions.
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Affiliation(s)
- Michael J Wood
- Department of Chemical Engineering, McGill University, Montréal, Québec H3A 0C5, Canada
| | - Gregory Brock
- Department of Chemical Engineering, McGill University, Montréal, Québec H3A 0C5, Canada
| | - Juliette Debray
- Department of Chemical Engineering, McGill University, Montréal, Québec H3A 0C5, Canada
| | - Phillip Servio
- Department of Chemical Engineering, McGill University, Montréal, Québec H3A 0C5, Canada
| | - Anne-Marie Kietzig
- Department of Chemical Engineering, McGill University, Montréal, Québec H3A 0C5, Canada
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5
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Zhao Y, Fang F. A Biomimetic Textile with Self-Assembled Hierarchical Porous Fibers for Thermal Insulation. ACS APPLIED MATERIALS & INTERFACES 2022; 14:25851-25860. [PMID: 35616048 DOI: 10.1021/acsami.1c24367] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Natural biomaterials with a porous structure inspired smart textiles for personal thermal management. Inspired by the hierarchically fibrous structure of hides, self-assembled hierarchical fibers with cross-scale porous networks are fabricated by the facile wet-spinning method. The biomimetic textile (abbreviated as "T") woven by such fibers exhibits a low thermal conductivity (0.07 W/mK) comparable to that of cowhide. It also shows a high mechanical strength of up to 10 MPa as well as good flexibility (fracture strain exceeds 300%) and hydrophobicity. The heat conduction mechanism of the hierarchical structure is analyzed via finite element simulation. When immersed with the phase-change material, the textile (named as "P") works like an adipose layer. Integration of the layers of T and P effectively slows down the heat conduction and decreases the surface temperature, resembling an animal insulation system. The study paves the way to mass production of high-performance biomimetic materials with hierarchical cellular microstructures for application in thermal insulation.
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Affiliation(s)
- Yuechao Zhao
- Applied Mechanics Laboratory, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P. R. China
| | - Fei Fang
- Applied Mechanics Laboratory, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P. R. China
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6
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Yue H, Zeng Q, Huang J, Guo Z, Liu W. Fog collection behavior of bionic surface and large fog collector: A review. Adv Colloid Interface Sci 2022; 300:102583. [PMID: 34954474 DOI: 10.1016/j.cis.2021.102583] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 12/11/2021] [Accepted: 12/14/2021] [Indexed: 11/18/2022]
Abstract
Water shortages are currently becoming more and more serious due to complicated factors such as the development of the economy, environmental pollution, and climate deterioration. And it is the best solution to the problems faced by people in today's world to investigate the bionic structure of nature and explore effective methods for fog collection. Herein, we've illustrated the bionic structures of the Namib desert beetle, cactus spines, and spider silk, and we imitate and further modify the respective bionic structures, as well as construct multifunctional bionic structures to improve fog collection. In addition, we also expound the fog collection behavior of a large fog collector, and an excellent fog capture effect was achieved through studying the mesh structure, the surface modification of the mesh, and the construction of the fog collector. The advantages and limitations of fog collection by a harp fog collector were also explored. We hope that through this review, relevant researchers can have a deeper understanding of this field and thus promote the development of fog collection.
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Affiliation(s)
- Hao Yue
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China; State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Qinghong Zeng
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China; State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Jinxia Huang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China.
| | - Zhiguang Guo
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China; State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China.
| | - Weimin Liu
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
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7
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Stachewicz U. Application of Electrospun Polymeric Fibrous Membranes as Patches for Atopic Skin Treatments. ADVANCES IN POLYMER SCIENCE 2022. [DOI: 10.1007/12_2022_139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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8
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Knapczyk-Korczak J, Stachewicz U. Biomimicking spider webs for effective fog water harvesting with electrospun polymer fibers. NANOSCALE 2021; 13:16034-16051. [PMID: 34581383 DOI: 10.1039/d1nr05111c] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Fog is an underestimated source of water, especially in regions where conventional methods of water harvesting are impossible, ineffective, or challenging for low-cost water resources. Interestingly, many novel methods and developments for effective water harvesting are inspired by nature. Therefore, in this review, we focused on one of the most researched and developing forms of electrospun polymer fibers, which successfully imitate many fascinating natural materials for instance spider webs. We showed how fiber morphology and wetting properties can increase the fog collection rate, and also observed the influence of fog water collection parameters on testing their efficiency. This review summarizes the current state of the art on water collection by fibrous meshes and offers suggestions for the testing of new designs under laboratory conditions by classifying the parameters already reported in experimental set-ups. This is extremely important, as fog collection under laboratory conditions is the first step toward creating a new water harvesting technology. This review summarizes all the approaches taken so far to develop the most effective water collection systems based on electrospun polymer fibers.
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Affiliation(s)
- Joanna Knapczyk-Korczak
- AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, al. A. Mickiewicza 30, 30-059 Kraków, Poland.
| | - Urszula Stachewicz
- AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, al. A. Mickiewicza 30, 30-059 Kraków, Poland.
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9
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Bagrov D, Perunova S, Pavlova E, Klinov D. Wetting of electrospun nylon-11 fibers and mats. RSC Adv 2021; 11:11373-11379. [PMID: 35423606 PMCID: PMC8695991 DOI: 10.1039/d0ra10788c] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 03/10/2021] [Indexed: 01/18/2023] Open
Abstract
Wetting of electrospun mats plays a huge role in tissue engineering and filtration applications. However, it is challenging to trace the interrelation between the wetting of individual nano-sized fibers and the macroscopic electrospun mat. Here we measured the wetting of different nylon-11 samples – solution-cast films, electrospun fibers deposited onto a substrate, and free-standing mats. With electrospun nylon-11 on aluminium foil, we traced the dependence of the wetting contact angle on the fibers' surface density (substrate coverage). When the coverage was low, the contact angle increased almost linearly with it. At ∼17–20% coverage, the contact angle achieved its maximum of 124 ± 7°, which matched the contact angle of a non-woven electrospun mat, 126 ± 2°. Our results highlight the importance of the outermost layer of fibers for the wetting of electrospun mats. When the surface density of electrospun nylon-11 fibers on aluminium increases, it causes a two-stage change in the wetting behaviour.![]()
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Affiliation(s)
- Dmitry Bagrov
- Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency 1a Malaya Pirogovskaya Street 119435 Moscow Russian Federation .,Lomonosov Moscow State University, Faculty of Biology Leninskie Gory 1-12 119234 Moscow Russian Federation
| | - Svetlana Perunova
- National University of Science and Technology MISiS Leninskiy Prospect 4 Moscow 119049 Russian Federation
| | - Elizaveta Pavlova
- Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency 1a Malaya Pirogovskaya Street 119435 Moscow Russian Federation .,Moscow Institute of Physics and Technology 9 Institutsky Per., Dolgoprudny 141700 Moscow Region Russian Federation
| | - Dmitry Klinov
- Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency 1a Malaya Pirogovskaya Street 119435 Moscow Russian Federation
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10
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Knapczyk-Korczak J, Szewczyk PK, Stachewicz U. The importance of nanofiber hydrophobicity for effective fog water collection. RSC Adv 2021; 11:10866-10873. [PMID: 35423545 PMCID: PMC8695882 DOI: 10.1039/d1ra00749a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 03/07/2021] [Indexed: 12/28/2022] Open
Abstract
To increase fog collection efficiency in a fiber system, controlled wetting properties are desirable. In this work, hydrophobic (PA11) and hydrophilic (PA6) polyamides were tested to verify the surface wetting effect on fog water collection rate. Highly porous fiber meshes were obtained from both polymer solutions. Randomly oriented fibers with average diameter of approximately 150 nm were observed with a scanning electron microscope (SEM). Despite the similar geometry and zeta potential of PA6 and PA11 meshes, it was shown that the hydrophobic PA11 nanofibers are more effective at water collection than hydrophilic PA6. These results indicate that wetting properties of electrospun nanofiber mesh have a significant effect on the process of draining from the mesh, as discussed in this paper. The results obtained are crucial for designing more efficient fog water collectors that include nanofibers in their construction.
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Affiliation(s)
- Joanna Knapczyk-Korczak
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology al. A. Mickiewicza 30 30-059 Kraków Poland +48 12 617 52 30
| | - Piotr K Szewczyk
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology al. A. Mickiewicza 30 30-059 Kraków Poland +48 12 617 52 30
| | - Urszula Stachewicz
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology al. A. Mickiewicza 30 30-059 Kraków Poland +48 12 617 52 30
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11
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Krysiak ZJ, Kaniuk Ł, Metwally S, Szewczyk PK, Sroczyk EA, Peer P, Lisiecka-Graca P, Bailey RJ, Bilotti E, Stachewicz U. Nano- and Microfiber PVB Patches as Natural Oil Carriers for Atopic Skin Treatment. ACS APPLIED BIO MATERIALS 2020; 3:7666-7676. [PMID: 33225238 PMCID: PMC7672701 DOI: 10.1021/acsabm.0c00854] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 08/18/2020] [Indexed: 11/30/2022]
Abstract
![]()
Atopic
dermatitis (eczema) is a widespread disorder, with researchers
constantly looking for more efficacious treatments. Natural oils are
reported to be an effective therapy for dry skin, and medical textiles
can be used as an alternative or supporting therapy. In this study,
fibrous membranes from poly(vinyl butyral-co-vinyl alcohol-co-vinyl
acetate) (PVB) with low and high molecular weights were manufactured
to obtain nano- and micrometer fibers via electrospinning
for the designed patches used as oil carriers for atopic skin treatment.
The biocompatibility of PVB patches was analyzed using proliferation
tests and scanning electron microscopy (SEM), which combined with
a focused ion beam (FIB) allowed for the 3D visualization of patches.
The oil spreading tests with evening primrose, black cumin seed, and
borage were verified with cryo-SEM, which showed the advantage nanofibers
have over microfibers as carriers for low-viscosity oils. The skin
tests expressed the usability and the enhanced oil delivery performance
for electrospun patches. We demonstrate that through the material
nano- and microstructure, commercially available polymers such as
PVB have great potential to be deployed as a biomaterial in medical
applications, such as topical treatments for chronic skin conditions.
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Affiliation(s)
- Zuzanna J Krysiak
- International Center of Electron Microscopy for Material Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Cracow 30-059, Poland
| | - Łukasz Kaniuk
- International Center of Electron Microscopy for Material Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Cracow 30-059, Poland
| | - Sara Metwally
- International Center of Electron Microscopy for Material Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Cracow 30-059, Poland
| | - Piotr K Szewczyk
- International Center of Electron Microscopy for Material Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Cracow 30-059, Poland
| | - Ewa A Sroczyk
- International Center of Electron Microscopy for Material Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Cracow 30-059, Poland
| | - Petra Peer
- Institute of Hydrodynamics of the Czech Academy of Sciences, Prague 16612, Czech Republic
| | - Paulina Lisiecka-Graca
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Cracow 30-059, Poland
| | - Russell J Bailey
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, U.K
| | - Emiliano Bilotti
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, U.K
| | - Urszula Stachewicz
- International Center of Electron Microscopy for Material Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Cracow 30-059, Poland
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12
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Kaniuk Ł, Krysiak ZJ, Metwally S, Stachewicz U. Osteoblasts and fibroblasts attachment to poly(3-hydroxybutyric acid-co-3-hydrovaleric acid) (PHBV) film and electrospun scaffolds. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 110:110668. [DOI: 10.1016/j.msec.2020.110668] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 12/07/2019] [Accepted: 01/13/2020] [Indexed: 01/08/2023]
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13
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Knapczyk-Korczak J, Ura DP, Gajek M, Marzec MM, Berent K, Bernasik A, Chiverton JP, Stachewicz U. Fiber-Based Composite Meshes with Controlled Mechanical and Wetting Properties for Water Harvesting. ACS APPLIED MATERIALS & INTERFACES 2020; 12:1665-1676. [PMID: 31820919 DOI: 10.1021/acsami.9b19839] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Water is the basis of life in the world. Unfortunately, resources are shrinking at an alarming rate. The lack of access to water is still the biggest problem in the modern world. The key to solving it is to find new unconventional ways to obtain water from alternative sources. Fog collectors are becoming an increasingly important way of water harvesting as there are places in the world where fog is the only source of water. Our aim is to apply electrospun fiber technology, due to its high surface area, to increase fog collection efficiency. Therefore, composites consisting of hydrophobic and hydrophilic fibers were successfully fabricated using a two-nozzle electrospinning setup. This design enables the realization of optimal meshes for harvesting water from fog. In our studies we focused on combining hydrophobic polystyrene (PS) and hydrophilic polyamide 6 (PA6), surface properties in the produced meshes, without any chemical modifications, on the basis of new hierarchical composites for collecting water. This combination of hydrophobic and hydrophilic materials causes water to condense on the hydrophobic microfibers and to run down on the hydrophilic nanofibers. By adjusting the fraction of PA6 nanofibers, we were able to tune the mechanical properties of PS meshes and importantly increase the efficiency in collecting water. We combined a few characterization methods together with novel image processing protocols for the analysis of fiber fractions in the constructed meshes. The obtained results show a new single-step method to produce meshes with enhanced mechanical properties and water collecting abilities that can be applied in existing fog water collectors. This is a new promising design for fog collectors with nano- and macrofibers which are able to efficiently harvest water, showing great application in comparison to commercially available standard meshes.
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Affiliation(s)
- Joanna Knapczyk-Korczak
- Faculty of Metals Engineering and Industrial Computer Science, International Centre of Electron Microscopy for Materials Science , AGH University of Science and Technology , 30-059 Krakow , Poland
| | - Daniel P Ura
- Faculty of Metals Engineering and Industrial Computer Science, International Centre of Electron Microscopy for Materials Science , AGH University of Science and Technology , 30-059 Krakow , Poland
| | - Marcin Gajek
- Faculty of Materials Science and Ceramics , AGH University of Science and Technology , 30-059 Krakow , Poland
| | - Mateusz M Marzec
- Academic Centre for Materials and Nanotechnology , AGH University of Science and Technology , 30-059 Krakow , Poland
| | - Katarzyna Berent
- Academic Centre for Materials and Nanotechnology , AGH University of Science and Technology , 30-059 Krakow , Poland
| | - Andrzej Bernasik
- Academic Centre for Materials and Nanotechnology , AGH University of Science and Technology , 30-059 Krakow , Poland
- Faculty of Physics and Applied Computer Science , AGH University of Science and Technology , 30-059 Krakow , Poland
| | - John P Chiverton
- School of Energy and Electronic Engineering , University of Portsmouth , Portsmouth PO1 3DJ , United Kingdom
| | - Urszula Stachewicz
- Faculty of Metals Engineering and Industrial Computer Science, International Centre of Electron Microscopy for Materials Science , AGH University of Science and Technology , 30-059 Krakow , Poland
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14
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Knapczyk-Korczak J, Szewczyk PK, Ura DP, Berent K, Stachewicz U. Hydrophilic nanofibers in fog collectors for increased water harvesting efficiency. RSC Adv 2020; 10:22335-22342. [PMID: 35514544 PMCID: PMC9054577 DOI: 10.1039/d0ra03939j] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 06/05/2020] [Indexed: 01/05/2023] Open
Abstract
The water crisis is a big social problem and one of the solutions are the Fog Water Collectors (FWCs) that are placed in areas, where the use of conventional methods to collect water is impossible or inadequate. The most common fog collecting medium in FWC is Raschel mesh, which in our study is modified with electrospun polyamide 6 (PA6) nanofibers. The hydrophilic PA6 nanofibers were directly deposited on Raschel meshes to create the hierarchical structure that increases the effective surface area which enhances the ability to catch water droplets from fog. The meshes and the wetting behavior were investigated using a scanning electron microscope (SEM) and environmental SEM (ESEM). We performed the fog water collection experiments on various configurations of Raschel meshes with hydrophilic PA6 nanofibers. The addition of hydrophilic nanofibers allowed us to obtain 3 times higher water collection rate of collecting water from fog. Within this study, we show the innovative and straightforward way to modify the existing technology that improves water collection by changing the mechanisms of droplet formation on the mesh. Modification of Raschel meshes used for fog water collectors with PA6 nanofibers allow to obtain 300% higher water collection rate in collecting water from fog.![]()
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Affiliation(s)
- Joanna Knapczyk-Korczak
- AGH University of Science and Technology
- Faculty of Metals Engineering and Industrial Computer Science
- International Centre of Electron Microscopy for Materials Science
- 30-059 Kraków
- Poland
| | - Piotr K. Szewczyk
- AGH University of Science and Technology
- Faculty of Metals Engineering and Industrial Computer Science
- International Centre of Electron Microscopy for Materials Science
- 30-059 Kraków
- Poland
| | - Daniel P. Ura
- AGH University of Science and Technology
- Faculty of Metals Engineering and Industrial Computer Science
- International Centre of Electron Microscopy for Materials Science
- 30-059 Kraków
- Poland
| | - Katarzyna Berent
- Academic Centre for Materials and Nanotechnology
- AGH University of Science and Technology
- Poland
| | - Urszula Stachewicz
- AGH University of Science and Technology
- Faculty of Metals Engineering and Industrial Computer Science
- International Centre of Electron Microscopy for Materials Science
- 30-059 Kraków
- Poland
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15
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Alcaire M, Lopez-Santos C, Aparicio FJ, Sanchez-Valencia JR, Obrero JM, Saghi Z, Rico VJ, de la Fuente G, Gonzalez-Elipe AR, Barranco A, Borras A. 3D Organic Nanofabrics: Plasma-Assisted Synthesis and Antifreezing Behavior of Superhydrophobic and Lubricant-Infused Slippery Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:16876-16885. [PMID: 31738565 DOI: 10.1021/acs.langmuir.9b03116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Herein, we present the development of supported organic nanofabrics formed by a conformal polymer-like interconnection of small-molecule organic nanowires and nanotrees. These organic nanostructures are fabricated by a combination of vacuum and plasma-assisted deposition techniques to generate step by step, single-crystalline organic nanowires forming one-dimensional building blocks, organic nanotrees applied as three-dimensional templates, and the polymer-like shell that produces the final fabric. The complete procedure is carried out at low temperatures and is compatible with an ample variety of substrates (polymers, metal, ceramics; either planar or in the form of meshes) yielding flexible and low solid-fraction three-dimensional nanostructures. The systematic investigation of this progressively complex organic nanomaterial delivers key clues relating their wetting, nonwetting, and anti-icing properties with their specific morphology and outer surface composition. Water contact angles higher than 150° are attainable as a function of the nanofabric shell thickness with outstanding freezing-delay times (FDT) longer than 2 h at -5 °C. The role of the extremely low roughness of the shell surface is settled as a critical feature for such an achievement. In addition, the characteristic interconnected microstructure of the nanofabrics is demonstrated as ideal for the fabrication of slippery liquid-infused porous surfaces (SLIPS). We present the straightforward deposition of the nanofabric on laser patterns and the knowledge of how this approach provides SLIPS with FDTs longer than 5 h at -5 °C and 1 h at -15 °C.
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Affiliation(s)
- Maria Alcaire
- Nanotechnology on Surfaces and Plasma Laboratory , Materials Science Institute of Seville, CSIC-US , C/Americo Vespucio 49 , 41092 , Seville , Spain
| | - Carmen Lopez-Santos
- Nanotechnology on Surfaces and Plasma Laboratory , Materials Science Institute of Seville, CSIC-US , C/Americo Vespucio 49 , 41092 , Seville , Spain
- Departamento de Física Atómica, Molecular y Nuclear , Universidad de Sevilla , Avda. Reina Mercedes s/n , 41012 Seville , Spain
| | - Francisco J Aparicio
- Nanotechnology on Surfaces and Plasma Laboratory , Materials Science Institute of Seville, CSIC-US , C/Americo Vespucio 49 , 41092 , Seville , Spain
| | - Juan R Sanchez-Valencia
- Nanotechnology on Surfaces and Plasma Laboratory , Materials Science Institute of Seville, CSIC-US , C/Americo Vespucio 49 , 41092 , Seville , Spain
- Departamento de Física Atómica, Molecular y Nuclear , Universidad de Sevilla , Avda. Reina Mercedes s/n , 41012 Seville , Spain
| | - Jose M Obrero
- Nanotechnology on Surfaces and Plasma Laboratory , Materials Science Institute of Seville, CSIC-US , C/Americo Vespucio 49 , 41092 , Seville , Spain
| | - Zineb Saghi
- Univ. Grenoble Alpes , CEA, LETI , F-38000 Grenoble , France
| | - Victor J Rico
- Nanotechnology on Surfaces and Plasma Laboratory , Materials Science Institute of Seville, CSIC-US , C/Americo Vespucio 49 , 41092 , Seville , Spain
| | - German de la Fuente
- Instituto de Ciencia de Materiales de Aragón , CSIC-Universidad de Zaragoza , 50018 Zaragoza , Spain
| | - Agustin R Gonzalez-Elipe
- Nanotechnology on Surfaces and Plasma Laboratory , Materials Science Institute of Seville, CSIC-US , C/Americo Vespucio 49 , 41092 , Seville , Spain
| | - Angel Barranco
- Nanotechnology on Surfaces and Plasma Laboratory , Materials Science Institute of Seville, CSIC-US , C/Americo Vespucio 49 , 41092 , Seville , Spain
| | - Ana Borras
- Nanotechnology on Surfaces and Plasma Laboratory , Materials Science Institute of Seville, CSIC-US , C/Americo Vespucio 49 , 41092 , Seville , Spain
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16
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Metwally S, Stachewicz U. Surface potential and charges impact on cell responses on biomaterials interfaces for medical applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 104:109883. [DOI: 10.1016/j.msec.2019.109883] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 05/02/2019] [Accepted: 06/11/2019] [Indexed: 12/12/2022]
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17
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Uematsu I, Naka T, Tokuno Y, Nakagawa Y, Matsumoto H. Organic Liquid Impregnation Behavior into Nanofibrous Membranes: Quantitative Analysis of the Effects of Structural Parameters. ACS OMEGA 2019; 4:15856-15861. [PMID: 31592455 PMCID: PMC6776969 DOI: 10.1021/acsomega.9b01738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 09/05/2019] [Indexed: 06/10/2023]
Abstract
This paper reports the effects of structural parameters on organic liquid impregnation behavior into nanofibrous (NF) polymer membranes. The NF membranes were prepared from organic liquidphilic polymers, poly(amide-imide)s (PAIs), by electrospinning. The impregnation velocity of the organic liquid, ethylmethylcarbonate, into the as-spun PAI NF membranes with diameters ranging from 400 to 900 nm was approximately 10-20 times higher than that into commercial cellulose nonwoven membranes. Our theoretical analyses based on the Kozeny-Carman equation and multivariate statistics clearly indicate that in addition to the porosity of the membranes, the variation in fiber diameter as well as the average fiber diameter is a crucial factor for controlling the liquid impregnation behavior.
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Affiliation(s)
- Ikuo Uematsu
- Department
of Materials Science and Engineering, Tokyo
Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
- Corporate
Manufacturing Engineering Center, Toshiba
Corporation, 33 Shin-Isogo-Cho, Isogo-ku, Yokohama 235-0017, Japan
| | - Tomomichi Naka
- Corporate
Manufacturing Engineering Center, Toshiba
Corporation, 33 Shin-Isogo-Cho, Isogo-ku, Yokohama 235-0017, Japan
| | - Yoko Tokuno
- Corporate
Manufacturing Engineering Center, Toshiba
Corporation, 33 Shin-Isogo-Cho, Isogo-ku, Yokohama 235-0017, Japan
| | - Yasutada Nakagawa
- Corporate
Manufacturing Engineering Center, Toshiba
Corporation, 33 Shin-Isogo-Cho, Isogo-ku, Yokohama 235-0017, Japan
| | - Hidetoshi Matsumoto
- Department
of Materials Science and Engineering, Tokyo
Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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18
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Metwally S, Martínez Comesaña S, Zarzyka M, Szewczyk PK, Karbowniczek JE, Stachewicz U. Thermal insulation design bioinspired by microstructure study of penguin feather and polar bear hair. Acta Biomater 2019; 91:270-283. [PMID: 31005607 DOI: 10.1016/j.actbio.2019.04.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 04/02/2019] [Accepted: 04/11/2019] [Indexed: 12/30/2022]
Abstract
Nature is an amazing source of inspiration for the design of thermal insulation strategies, which are key for saving energy. In nature, thermal insulation structures, such as penguin feather and polar bear hair, are well developed; enabling the animals' survival in frigid waters. The detailed microscopy investigations conducted in this study, allowed us to perform microstructural analysis of these thermally insulating materials, including statistical measurements of keratin fiber and pore dimensions directly from high resolution Scanning Electron Microscope (SEM) images. The microscopy study revealed many similarities in both materials, and showed the importance of their hierarchically-organized porous structure. Finally, we propose the schematic configuration of a thermally-insulating structure, based on the penguin feather and polar bear hair. These optimized thermal-insulator systems indicate the road maps for future development, and new approaches in the design of material properties. STATEMENT OF SIGNIFICANCE: We present the first detailed comparison of microstructures of penguin feather and polar bear hair for designing optimum thermal insulation properties. This unique study involves the measurement of the sizes of pores and fibers of these two keratin-based materials, including the investigation of their 3D arrangements. We revealed porosity interconnection, especially in polar bear hair, which is one of the key designs exhibited by thermal insulation materials.
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19
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Ura DP, Karbowniczek JE, Szewczyk PK, Metwally S, Kopyściański M, Stachewicz U. Cell Integration with Electrospun PMMA Nanofibers, Microfibers, Ribbons, and Films: A Microscopy Study. Bioengineering (Basel) 2019; 6:E41. [PMID: 31075876 PMCID: PMC6630608 DOI: 10.3390/bioengineering6020041] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 05/06/2019] [Accepted: 05/08/2019] [Indexed: 01/25/2023] Open
Abstract
Tissue engineering requires properly selected geometry and surface properties of the scaffold, to promote in vitro tissue growth. In this study, we obtained three types of electrospun poly(methyl methacrylate) (PMMA) scaffolds-nanofibers, microfibers, and ribbons, as well as spin-coated films. Their morphology was imaged by scanning electron microscopy (SEM) and characterized by average surface roughness and water contact angle. PMMA films had a smooth surface with roughness, Ra below 0.3 µm and hydrophilic properties, whereas for the fibers and the ribbons, we observed increased hydrophobicity, with higher surface roughness and fiber diameter. For microfibers, we obtained the highest roughness of 7 µm, therefore, the contact angle was 140°. All PMMA samples were used for the in vitro cell culture study, to verify the cells integration with various designs of scaffolds. The detailed microscopy study revealed that higher surface roughness enhanced cells' attachment and their filopodia length. The 3D structure of PMMA microfibers with an average fiber diameter above 3.5 µm, exhibited the most favorable geometry for cells' ingrowth, whereas, for other structures we observed cells growth only on the surface. The study showed that electrospinning of various scaffolds geometry is able to control cells development that can be adjusted according to the tissue needs in the regeneration processes.
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Affiliation(s)
- Daniel P Ura
- International Centre of Electron Microscopy for Materials Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, 30-059 Krakow, Poland.
| | - Joanna E Karbowniczek
- International Centre of Electron Microscopy for Materials Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, 30-059 Krakow, Poland.
| | - Piotr K Szewczyk
- International Centre of Electron Microscopy for Materials Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, 30-059 Krakow, Poland.
| | - Sara Metwally
- International Centre of Electron Microscopy for Materials Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, 30-059 Krakow, Poland.
| | - Mateusz Kopyściański
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, 30-059 Krakow, Poland.
| | - Urszula Stachewicz
- International Centre of Electron Microscopy for Materials Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, 30-059 Krakow, Poland.
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20
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Cherpinski A, Szewczyk PK, Gruszczyński A, Stachewicz U, Lagaron JM. Oxygen-Scavenging Multilayered Biopapers Containing Palladium Nanoparticles Obtained by the Electrospinning Coating Technique. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E262. [PMID: 30769855 PMCID: PMC6409785 DOI: 10.3390/nano9020262] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 02/03/2019] [Accepted: 02/11/2019] [Indexed: 12/16/2022]
Abstract
The main goal of this study was to obtain, for the first time, highly efficient water barrier and oxygen-scavenging multilayered electrospun biopaper coatings of biodegradable polymers over conventional cellulose paper, using the electrospinning coating technique. In order to do so, poly(3-hydroxybutyrate) (PHB) and polycaprolactone (PCL) polymer-containing palladium nanoparticles (PdNPs) were electrospun over paper, and the morphology, thermal properties, water vapor barrier, and oxygen absorption properties of nanocomposites and multilayers were investigated. In order to reduce the porosity, and to enhance the barrier properties and interlayer adhesion, the biopapers were annealed after electrospinning. A previous study showed that electrospun PHB-containing PdNP did show significant oxygen scavenging capacity, but this was strongly reduced after annealing, a process that is necessary to form a continuous film with the water barrier. The results in the current work indicate that the PdNP were better dispersed and distributed in the PCL matrix, as suggested by focus ion beam-scanning electron microscopy (FIB-SEM) experiments, and that the Pd enhanced, to some extent, the onset of PCL degradation. More importantly, the PCL/PdNP nanobiopaper exhibited much higher oxygen scavenging capacity than the homologous PHB/PdNP, due to most likely, the higher oxygen permeability of the PCL polymer and the somewhat higher dispersion of the Pd. The passive and active multilayered biopapers developed here may be of significant relevance to put forward the next generation of fully biodegradable barrier papers of interest in, for instance, food packaging.
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Affiliation(s)
- Adriane Cherpinski
- Novel Materials and Nanotechnology Group, Institute of Agrochemistry and Food Technology (IATA), Spanish Council for Scientific Research (CSIC), Calle Catedrático Agustín Escardino Benlloch 7, 46980 Paterna, Spain.
| | - Piotr K Szewczyk
- AGH University of Science and Technology, International Centre of Electron Microscopy for Materials Science, Faculty of Metals Engineering and Industrial Computer Science, Al. A. Mickiewicza 30, 30-059 Kraków, Poland.
| | - Adam Gruszczyński
- AGH University of Science and Technology, International Centre of Electron Microscopy for Materials Science, Faculty of Metals Engineering and Industrial Computer Science, Al. A. Mickiewicza 30, 30-059 Kraków, Poland.
| | - Urszula Stachewicz
- AGH University of Science and Technology, International Centre of Electron Microscopy for Materials Science, Faculty of Metals Engineering and Industrial Computer Science, Al. A. Mickiewicza 30, 30-059 Kraków, Poland.
| | - Jose M Lagaron
- Novel Materials and Nanotechnology Group, Institute of Agrochemistry and Food Technology (IATA), Spanish Council for Scientific Research (CSIC), Calle Catedrático Agustín Escardino Benlloch 7, 46980 Paterna, Spain.
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21
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Ups and Downs of Water Photodecolorization by Nanocomposite Polymer Nanofibers. NANOMATERIALS 2019; 9:nano9020250. [PMID: 30759854 PMCID: PMC6410213 DOI: 10.3390/nano9020250] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 02/06/2019] [Accepted: 02/09/2019] [Indexed: 11/17/2022]
Abstract
Given the exponentially expanding water pollution causing water scarcity, there is an urgent need for operative nanotechnological systems that can purify water, with insignificant energy consumption, and rapidly. Here, we introduce a nanocomposite system based on TiO2 nanoparticles (NPs) and PES nanofibers (NFs) that can adsorb and then photodecompose organic water pollutants such as dye molecules. We evaluate pros and cons of this system with respect to its purification efficiency and structural properties that can be impacted by the photocatalytic activity of the nanofillers. While the material is superhydrophilic and able to remove 95% methylene blue (MB) from water via adsorption/photodecomposition, its thermomechanical properties decline upon UV irradiation. However, these properties still remain at the level of the neat NFs. The removal behavior is modeled by the first- and second-order kinetic models from the kinetic point of view. The nanocomposite NFs’ removal behavior complies much better with the second-order kinetic model. Overall, such feedbacks implied that the nanocomposite can be effectively applied for water treatment and the structural properties are still as reliable as those of the neat counterpart.
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22
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Szewczyk PK, Ura DP, Metwally S, Knapczyk-Korczak J, Gajek M, Marzec MM, Bernasik A, Stachewicz U. Roughness and Fiber Fraction Dominated Wetting of Electrospun Fiber-Based Porous Meshes. Polymers (Basel) 2018; 11:E34. [PMID: 30960018 PMCID: PMC6401689 DOI: 10.3390/polym11010034] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 12/14/2018] [Accepted: 12/24/2018] [Indexed: 01/15/2023] Open
Abstract
Wettability of electrospun fibers is one of the key parameters in the biomedical and filtration industry. Within this comprehensive study of contact angles on three-dimensional (3D) meshes made of electrospun fibers and films, from seven types of polymers, we clearly indicated the importance of roughness analysis. Surface chemistry was analyzed with X-ray photoelectron microscopy (XPS) and it showed no significant difference between fibers and films, confirming that the hydrophobic properties of the surfaces can be enhanced by just roughness without any chemical treatment. The surface geometry was determining factor in wetting contact angle analysis on electrospun meshes. We noted that it was very important how the geometry of electrospun surfaces was validated. The commonly used fiber diameter was not necessarily a convincing parameter unless it was correlated with the surface roughness or fraction of fibers or pores. Importantly, this study provides the guidelines to verify the surface free energy decrease with the fiber fraction for the meshes, to validate the changes in wetting contact angles. Eventually, the analysis suggested that meshes could maintain the entrapped air between fibers, decreasing surface free energies for polymers, which increased the contact angle for liquids with surface tension above the critical Wenzel level to maintain the Cassie-Baxter regime for hydrophobic surfaces.
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Affiliation(s)
- Piotr K Szewczyk
- International Centre of Electron Microscopy for Materials Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, 30-059 Kraków, Poland.
| | - Daniel P Ura
- International Centre of Electron Microscopy for Materials Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, 30-059 Kraków, Poland.
| | - Sara Metwally
- International Centre of Electron Microscopy for Materials Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, 30-059 Kraków, Poland.
| | - Joanna Knapczyk-Korczak
- International Centre of Electron Microscopy for Materials Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, 30-059 Kraków, Poland.
| | - Marcin Gajek
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30-059 Kraków, Poland.
| | - Mateusz M Marzec
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, 30-059 Kraków, Poland.
| | - Andrzej Bernasik
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, 30-059 Kraków, Poland.
- Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, 30-059 Kraków, Poland.
| | - Urszula Stachewicz
- International Centre of Electron Microscopy for Materials Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, 30-059 Kraków, Poland.
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23
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GO nanosheets localization by morphological study on PLA-GO electrospun nanocomposite nanofibers. JOURNAL OF POLYMER RESEARCH 2018. [DOI: 10.1007/s10965-018-1589-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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24
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Stachewicz U, Szewczyk PK, Kruk A, Barber AH, Czyrska-Filemonowicz A. Pore shape and size dependence on cell growth into electrospun fiber scaffolds for tissue engineering: 2D and 3D analyses using SEM and FIB-SEM tomography. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 95:397-408. [PMID: 30573264 DOI: 10.1016/j.msec.2017.08.076] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Revised: 07/03/2017] [Accepted: 08/18/2017] [Indexed: 10/19/2022]
Abstract
Electrospun nanofibers have ability to boost cell proliferation in tissue engineered scaffolds as their structure remind cells extra cellular matrix of the native tissue. The complex architecture and network of nanofibrous scaffolds requires advanced characterization methods to understand interrelationship between cells and nanofibers. In our study, we used complementary 2D and 3D analyses of electrospun polylactide-co-glycolide acid (PLGA) scaffolds in two configurations: aligned and randomly oriented nanofibers. Sizes of pores and fibers, pores shapes and porosity, before and after cell culture, were verified by imaging with scanning electron microscopy (SEM) and combination of focus ion beam (FIB) and SEM to obtain 3D reconstructions of samples. Using FIB-SEM tomography for 3D reconstructions and 2D analyses, a unique set of data allowing understanding cell proliferation mechanism into the electrospun scaffolds, was delivered. Critically, the proliferation of cells into nanofibers network depends mainly on the pore shape and pores interconnections, which allow deep integration between cells and nanofibers. The proliferation of cells inside the network of fibers is much limited for aligned fibers comparing to randomly oriented fibers. For random fibers cells have easier way to integrate inside the scaffold as the circularity of pores and their sizes are larger than for aligned scaffolds. The complex architecture of electrospun scaffolds requires appropriate, for tissue engineering needs, cell seeding and culture methods, to maximize tissue growth in vitro environment.
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Affiliation(s)
- Urszula Stachewicz
- AGH University of Science and Technology, International Centre of Electron Microscopy for Materials Science and Faculty of Metals Engineering and Industrial Computer Science, Al. A. Mickiewicza 30, 30-059 Kraków, Poland; School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom.
| | - Piotr K Szewczyk
- AGH University of Science and Technology, International Centre of Electron Microscopy for Materials Science and Faculty of Metals Engineering and Industrial Computer Science, Al. A. Mickiewicza 30, 30-059 Kraków, Poland
| | - Adam Kruk
- AGH University of Science and Technology, International Centre of Electron Microscopy for Materials Science and Faculty of Metals Engineering and Industrial Computer Science, Al. A. Mickiewicza 30, 30-059 Kraków, Poland
| | - Asa H Barber
- School of Engineering, University of Portsmouth, Portsmouth PO1 3DJ, United Kingdom
| | - Aleksandra Czyrska-Filemonowicz
- AGH University of Science and Technology, International Centre of Electron Microscopy for Materials Science and Faculty of Metals Engineering and Industrial Computer Science, Al. A. Mickiewicza 30, 30-059 Kraków, Poland
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25
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Nakashima T, Tenjimbayashi M, Matsubayashi T, Manabe K, Fujita M, Kamiya T, Honda T, Shiratori S. Oleophobic/Adhesive Janus Self-Standing Films Modified with Bifurcated Short Fluorocarbon Chains as Transparent Oil Stain-Free Coating with Attachability. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b00164] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Taichi Nakashima
- Center
for Material Design Science, School of Integrated Design Engineering,
Graduate School of Science and Technology, Keio University, 3-14-1
Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Mizuki Tenjimbayashi
- Center
for Material Design Science, School of Integrated Design Engineering,
Graduate School of Science and Technology, Keio University, 3-14-1
Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Takeshi Matsubayashi
- Center
for Material Design Science, School of Integrated Design Engineering,
Graduate School of Science and Technology, Keio University, 3-14-1
Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Kengo Manabe
- Center
for Material Design Science, School of Integrated Design Engineering,
Graduate School of Science and Technology, Keio University, 3-14-1
Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Masato Fujita
- Mitsubishi Materials Electronic Chemicals Co., Ltd., 3-1-6 Barajima, Akita City, Akita 010-8585, Japan
| | - Takeshi Kamiya
- Mitsubishi Materials Electronic Chemicals Co., Ltd., 3-1-6 Barajima, Akita City, Akita 010-8585, Japan
| | - Tsunetoshi Honda
- Mitsubishi Materials Electronic Chemicals Co., Ltd., 3-1-6 Barajima, Akita City, Akita 010-8585, Japan
| | - Seimei Shiratori
- Center
for Material Design Science, School of Integrated Design Engineering,
Graduate School of Science and Technology, Keio University, 3-14-1
Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
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26
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Abstract
Rotator cuff tears continue to be at significant risk for re-tear or for failure to heal after surgical repair despite the use of a variety of surgical techniques and augmentation devices. Therefore, there is a need for functionalized scaffold strategies to provide sustained mechanical augmentation during the critical first 12-weeks following repair, and to enhance the healing potential of the repaired tendon and tendon-bone interface. Tissue engineered approaches that combine the use of scaffolds, cells, and bioactive molecules towards promising new solutions for rotator cuff repair are reviewed. The ideal scaffold should have adequate initial mechanical properties, be slowly degrading or non-degradable, have non-toxic degradation products, enhance cell growth, infiltration and differentiation, promote regeneration of the tendon-bone interface, be biocompatible and have excellent suture retention and handling properties. Scaffolds that closely match the inhomogeneity and non-linearity of the native rotator cuff may significantly advance the field. While substantial pre-clinical work remains to be done, continued progress in overcoming current tissue engineering challenges should allow for successful clinical translation.
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27
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Stachewicz U, Qiao T, Rawlinson SCF, Almeida FV, Li WQ, Cattell M, Barber AH. 3D imaging of cell interactions with electrospun PLGA nanofiber membranes for bone regeneration. Acta Biomater 2015; 27:88-100. [PMID: 26348143 DOI: 10.1016/j.actbio.2015.09.003] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Revised: 08/02/2015] [Accepted: 09/04/2015] [Indexed: 11/15/2022]
Abstract
The interaction between resident cells and electrospun nanofibers is critical in determining resultant osteoblast proliferation and activity in orthopedic tissue scaffolds. The use of techniques to evaluate cell-nanofiber interactions is critical in understanding scaffold function, with visualization promising unparalleled access to spatial information on such interactions. 3D tomography exploiting focused ion beam (FIB)-scanning electron microscopy (SEM) was used to examine electrospun nanofiber scaffolds to understand the features responsible for (osteoblast-like MC3T3-E1 and UMR106) cell behavior and resultant scaffold function. 3D imaging of cell-nanofiber interactions within a range of electrospun poly(d,l-lactide-co-glycolide acid) (PLGA) nanofiber scaffold architectures indicated a coherent interface between osteoblasts and nanofiber surfaces, promoting osteoblast filopodia formation for successful cell growth. Coherent cell-nanofiber interfaces were demonstrated throughout a randomly organized and aligned nanofiber network. Gene expression of UMR106 cells grown on PLGA fibers did not deviate significantly from those grown on plastic, suggesting maintenance of phenotype. However, considerably lower expression of Ibsp and Alpl on PLGA fibers might indicate that these cells are still in the proliferative phase compared with a more differentiated cell on plastic. This work demonstrates the synergy between designing electrospun tissue scaffolds and providing comprehensive evaluation through high resolution imaging of resultant 3-dimensional cell growth within the scaffold. STATEMENT OF SIGNIFICANCE Membranes made from electrospun nanofibers are potentially excellent for promoting bone growth for next-generation tissue scaffolds. The effectiveness of an electrospun membrane is shown here using high resolution 3D imaging to visualize the interaction between cells and the nanofibers within the membrane. Nanofibers that are aligned in one direction control cell growth at the surface of the membrane whereas random nanofibers cause cell growth into the membrane. Such observations are important and indicate that lateral cell growth at the membrane surface using aligned nanofibers could be used for rapid tissue repair whereas slower but more extensive tissue production is promoted by membranes containing random nanofibers.
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Affiliation(s)
- Urszula Stachewicz
- Nanoforce Technology Ltd., Queen Mary, University of London, Mile End Road, London E1 4NS, United Kingdom; School of Engineering and Materials Science, Queen Mary, University of London, Mile End Road, London E1 4NS, United Kingdom; AGH University of Science and Technology, International Centre of Electron Microscopy for Materials Science and Faculty of Metals Engineering and Industrial Computer Science, Al. A. Mickiewicza 30, 30-059 Kraków, Poland.
| | - Tuya Qiao
- School of Engineering and Materials Science, Queen Mary, University of London, Mile End Road, London E1 4NS, United Kingdom.
| | - Simon C F Rawlinson
- Research Centre for Oral Growth and Development, Barts and The London, Queen Mary's School of Medicine and Dentistry, Queen Mary, University of London, 4 Newark Street, London E1 2AT, United Kingdom.
| | - Filipe Veiga Almeida
- School of Engineering and Materials Science, Queen Mary, University of London, Mile End Road, London E1 4NS, United Kingdom.
| | - Wei-Qi Li
- School of Engineering and Materials Science, Queen Mary, University of London, Mile End Road, London E1 4NS, United Kingdom.
| | - Michael Cattell
- Centre for Adult Oral Health, Institute of Dentistry, Barts and The London, Queen Mary's School of Medicine and Dentistry, Queen Mary, University of London, Turner Street, Whitechapel E1 2AD, United Kingdom.
| | - Asa H Barber
- Nanoforce Technology Ltd., Queen Mary, University of London, Mile End Road, London E1 4NS, United Kingdom; School of Engineering and Materials Science, Queen Mary, University of London, Mile End Road, London E1 4NS, United Kingdom; School of Engineering, University of Portsmouth, Portsmouth PO1 3DJ, United Kingdom.
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Stachewicz U, Qiao T, Rawlinson SCF, Veiga Almeida F, Li WQ, Cattell M, Barber AH. Microscopy and supporting data for osteoblast integration within an electrospun fibrous network. Data Brief 2015; 5:775-81. [PMID: 26693511 PMCID: PMC4659782 DOI: 10.1016/j.dib.2015.10.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 10/04/2015] [Accepted: 10/07/2015] [Indexed: 11/16/2022] Open
Abstract
This data article contains data related to the research article entitled "3D imaging of cell interactions with electrospun PLGA nanofiber membranes for bone regeneration" by Stachewicz et al. [1]. In this paper we include additional data showing degradation analysis of poly(d,l-lactide-co-glycolide acid) (PLGA) electrospun fibers in medium and air using fiber diameter distribution histograms. We also describe the steps used in "slice and view" tomography techniques with focused ion beam (FIB) microscopy and scanning electron microscopy (SEM) and detail the image analysis to obtain 3D reconstruction of osteoblast cell integration with electrospun network of fibers. Further supporting data and detailed information on the quantification of cell growth within the electrospun nanofiber membranes is provided.
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Affiliation(s)
- Urszula Stachewicz
- Nanoforce Technology Ltd., Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom ; School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom ; AGH University of Science and Technology, International Centre of Electron Microscopy for Materials Science and Faculty of Metals Engineering and Industrial Computer Science, Al. A. Mickiewicza 30, 30-059 Kraków, Poland
| | - Tuya Qiao
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom
| | - Simon C F Rawlinson
- Research Centre for Oral Growth and Development, Barts and The London Queen Mary׳s School of Medicine and Dentistry, 4 Newark Street, London E1 2AT, United Kingdom
| | - Filipe Veiga Almeida
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom
| | - Wei-Qi Li
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom
| | - Michael Cattell
- Centre for Adult Oral Health, Institute of Dentistry, Queen Mary׳s School of Medicine and Dentistry, Turner Street, Whitechapel, London E1 2AD, United Kingdom
| | - Asa H Barber
- Nanoforce Technology Ltd., Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom ; School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom ; School of Engineering, University of Portsmouth, Portsmouth PO1 3DJ, United Kingdom
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