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Xu C, Cheong JY, Mo X, Jérôme V, Freitag R, Agarwal S, Gharibi R, Greiner A. Thoroughly Hydrophilized Electrospun Poly(L-Lactide)/ Poly(ε-Caprolactone) Sponges for Tissue Engineering Application. Macromol Biosci 2023; 23:e2300143. [PMID: 37357761 DOI: 10.1002/mabi.202300143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 06/19/2023] [Indexed: 06/27/2023]
Abstract
Biodegradable electrospun sponges are of interest for various applications including tissue engineering, drug release, dental therapy, plant protection, and plant fertilization. Biodegradable electrospun poly(l-lactide)/poly(ε-caprolactone) (PLLA/PCL) blend fiber-based sponge with hierarchical pore structure is inherently hydrophobic, which is disadvantageous for application in tissue engineering, fertilization, and drug delivery. Contact angles and model studies for staining with a hydrophilic dye for untreated, plasma-treated, and surfactant-treated PLLA/PCL sponges are reported. Thorough hydrophilization of PLLA/PCL sponges is found only with surfactant-treated sponges. The MTT assay on the leachates from the sponges does not indicate any cell incompatibility. Furthermore, the cell proliferation and penetration of the hydrophilized sponges are verified by in vitro cell culture studies using MG63 and human fibroblast cells.
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Affiliation(s)
- Chengzhang Xu
- Macromolecular Chemistry and Bavarian Polymer Institute, University of Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany
| | - Jun Young Cheong
- Bavarian Center for Battery Technology (BayBatt) and Department of Chemistry, University of Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany
| | - Xiumei Mo
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Biological Science and Medical Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Valérie Jérôme
- Chair for Process Biotechnology, University of Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany
| | - Ruth Freitag
- Chair for Process Biotechnology, University of Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany
| | - Seema Agarwal
- Macromolecular Chemistry and Bavarian Polymer Institute, University of Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany
| | - Reza Gharibi
- Department of Organic Chemistry and Polymer, Faculty of Chemistry, Kharazmi University, Tehran, 15719-14911, Iran
| | - Andreas Greiner
- Macromolecular Chemistry and Bavarian Polymer Institute, University of Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany
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Ioan M, Anghel DF, Gifu IC, Alexandrescu E, Petcu C, Diţu LM, Sanda GA, Bala D, Cinteza LO. Novel Microemulsions with Essential Oils for Environmentally Friendly Cleaning of Copper Cultural Heritage Artifacts. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2430. [PMID: 37686938 PMCID: PMC10490116 DOI: 10.3390/nano13172430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 08/22/2023] [Accepted: 08/24/2023] [Indexed: 09/10/2023]
Abstract
Cleaning represents an important and challenging operation in the conservation of cultural heritage, and at present, a key issue consists in the development of more sustainable, "green" materials and methods to perform it. In the present work, a novel xylene-in-water microemulsion based on nonionic surfactants with low toxicity was obtained, designed as low-impact cleaning agent for metallic historic objects. Phase diagram of the mixtures containing polyoxyethylene-polyoxypropilene triblock copolymer Pluronic P84 and D-alpha-tocopheryl polyethylene glycol 1000 succinate (TPGS) as surfactants, water, ethanol and xylene was studied, and a microemulsion with low surfactant content was selected as suitable cleaning nanosystem. Essential oils (EOs) from thyme and cinnamon leaf were added to the selected microemulsion in order to include other beneficial properties such as anticorrosive and antifungal protection. The microemulsions with or without EOs were characterized by size, size distribution and zeta potential. The cleaning efficacy of the tested microemulsions was assessed based on their ability to remove two types of artificial dirt by using X-ray energy dispersion spectrometry (EDX), scanning electron microscopy (SEM), contact angle measurements and color analysis. Microemulsions exhibit high capacity to remove artificial dirt from model copper coupons in spite of very low content of the organic solvent. Both thyme and cinnamon oil loading microemulsions prove to significantly reduce the corrosion rate of treated metallic plates compared to those of bare copper. The antifungal activity of the novel type of microemulsion was evaluated against Aspergillus niger, reported as main treat in biocorrosion of historic copper artifacts. Application of microemulsion with small amounts of EOs on Cu plates inhibits the growth of fungi, providing a good fungicidal effect.
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Affiliation(s)
- Mihaela Ioan
- “Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 202 Spl. Independentei, 060021 Bucharest, Romania; (M.I.); (D.F.A.)
| | - Dan Florin Anghel
- “Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 202 Spl. Independentei, 060021 Bucharest, Romania; (M.I.); (D.F.A.)
| | - Ioana Catalina Gifu
- Polymer Department, National Institute for Research and Development in Chemistry and Petrochemistry—ICECHIM, 202 Spl. Independentei, 060021 Bucharest, Romania; (I.C.G.); (E.A.)
| | - Elvira Alexandrescu
- Polymer Department, National Institute for Research and Development in Chemistry and Petrochemistry—ICECHIM, 202 Spl. Independentei, 060021 Bucharest, Romania; (I.C.G.); (E.A.)
| | - Cristian Petcu
- Polymer Department, National Institute for Research and Development in Chemistry and Petrochemistry—ICECHIM, 202 Spl. Independentei, 060021 Bucharest, Romania; (I.C.G.); (E.A.)
| | - Lia Mara Diţu
- Microbiology Department, Faculty of Biology, University of Bucharest, 030018 Bucharest, Romania;
| | - Georgiana Alexandra Sanda
- Physical Chemistry Department, University of Bucharest, 4–12 Blv. Regina Elisabeta, 030018 Bucharest, Romania; (G.A.S.); (D.B.)
| | - Daniela Bala
- Physical Chemistry Department, University of Bucharest, 4–12 Blv. Regina Elisabeta, 030018 Bucharest, Romania; (G.A.S.); (D.B.)
| | - Ludmila Otilia Cinteza
- Physical Chemistry Department, University of Bucharest, 4–12 Blv. Regina Elisabeta, 030018 Bucharest, Romania; (G.A.S.); (D.B.)
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Johnson PM, Meinhold KL, Ohl NR, Lehtinen JM, Robinson JL. Surfactant Molecular Properties Control Location in Emulsion Electrospun Fibers and Dictate Resulting Fiber Properties. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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4
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Tyubaeva PM, Tyubaev MA, Podmasterev VV, Bolshakova AV, Arzhakova OV. Hydrophilization of Hydrophobic Mesoporous High-Density Polyethylene Membranes via Ozonation. MEMBRANES 2022; 12:733. [PMID: 35893451 PMCID: PMC9330096 DOI: 10.3390/membranes12080733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/21/2022] [Accepted: 07/22/2022] [Indexed: 12/04/2022]
Abstract
This work addresses hydrophilization of hydrophobic mesoporous membranes based on high-density polyethylene (HDPE) via ozonation. Mesoporous HDPE membranes were prepared by intercrystallite environmental crazing. Porosity was 50%, and pore dimensions were below 10 nm. Contact angle of mesoporous membranes increases from 96° (pristine HDPE) to 120° due to the formation of nano/microscale surface relief and enhanced surface roughness. The membranes are impermeable to water (water entry threshold is 250 bar). The prepared membranes were exposed to ozonation and showed a high ozone uptake. After ozonation, the membranes were studied by different physicochemical methods, including DSC, AFM, FTIR spectroscopy, etc. Due to ozonation, wettability of the membranes was improved: their contact angle decreased from 120° down to 60°, and they became permeable to water. AFM micrographs revealed a marked smoothening of the surface relief, and the FTIR spectra indicated the development of new functionalities due to ozonolysis. Both factors contribute to hydrophilization and water permeability of the ozonated HDPE membranes. Hence, ozonation was proved to be a facile and efficient instrument for surface modification of hydrophobic mesoporous HDPE membranes and can also provide their efficient sterilization for biomedical purposes and water treatment.
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Affiliation(s)
- Polina M. Tyubaeva
- Academic Department of Innovative Materials and Technologies, Plekhanov Russian University of Economics, Stremyanny Per. 36, 117997 Moscow, Russia;
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, ul.Kosygina 4, 119334 Moscow, Russia;
| | - Mikhail A. Tyubaev
- Academic Department of Innovative Materials and Technologies, Plekhanov Russian University of Economics, Stremyanny Per. 36, 117997 Moscow, Russia;
| | - Vyacheslav V. Podmasterev
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, ul.Kosygina 4, 119334 Moscow, Russia;
| | - Anastasia V. Bolshakova
- Faculty of Chemistry, Lomonosov Moscow State University, Leninskiye Gory 1/3, 119991 Moscow, Russia; (A.V.B.); (O.V.A.)
| | - Olga V. Arzhakova
- Faculty of Chemistry, Lomonosov Moscow State University, Leninskiye Gory 1/3, 119991 Moscow, Russia; (A.V.B.); (O.V.A.)
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Bazgir M, Zhang W, Zhang X, Elies J, Saeinasab M, Coates P, Youseffi M, Sefat F. Fabrication and Characterization of PCL/PLGA Coaxial and Bilayer Fibrous Scaffolds for Tissue Engineering. MATERIALS (BASEL, SWITZERLAND) 2021; 14:6295. [PMID: 34771821 PMCID: PMC8584973 DOI: 10.3390/ma14216295] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/25/2021] [Accepted: 10/11/2021] [Indexed: 12/26/2022]
Abstract
Electrospinning is an innovative new fibre technology that aims to design and fabricate membranes suitable for a wide range of tissue engineering (TE) applications including vascular grafts, which is the main objective of this research work. This study dealt with fabricating and characterising bilayer structures comprised of an electrospun sheet made of polycaprolactone (PCL, inner layer) and an outer layer made of poly lactic-co-glycolic acid (PLGA) and a coaxial porous scaffold with a micrometre fibre structure was successfully produced. The membranes' propriety for intended biomedical applications was assessed by evaluating their morphological structure/physical properties and structural integrity when they underwent the degradation process. A scanning electron microscope (SEM) was used to assess changes in the electrospun scaffolds' structural morphology such as in their fibre diameter, pore size (μm) and the porosity of the scaffold surface which was measured with Image J software. During the 12-week degradation process at room temperature, most of the scaffolds showed a similar trend in their degradation rate except the 60 min scaffolds. The coaxial scaffold had significantly less mass loss than the bilayer PCL/PLGA scaffold with 1.348% and 18.3%, respectively. The mechanical properties of the fibrous membranes were measured and the coaxial scaffolds showed greater tensile strength and elongation at break (%) compared to the bilayer scaffolds. According to the results obtained in this study, it can be concluded that a scaffold made with a coaxial needle is more suitable for tissue engineering applications due to the improved quality and functionality of the resulting polymeric membrane compared to the basic electrospinning process. However, whilst fabricating a vascular graft is the main aim of this research work, the biological data will not present in this paper.
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Affiliation(s)
- Morteza Bazgir
- Department of Biomedical and Electronics Engineering, School of Engineering, University of Bradford, Bradford BD7 1DP, UK; (M.B.); (M.Y.)
| | - Wei Zhang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China;
- Advanced Polymer Materials Research Center, Sichuan University, Shishi 362700, China
| | - Ximu Zhang
- Chongqing Key Laboratory of Oral Disease and Biomedical Sciences and Chongqing Municipal Key Laboratory of Oral Biomedical Engineering, Higher Education and Stomatological Hospital, Chongqing Medical University, Chongqing 401174, China;
| | - Jacobo Elies
- School of Pharmacy and Medical Sciences, Faculty of Life Sciences, University of Bradford, Bradford BD7 1DP, UK;
| | - Morvarid Saeinasab
- Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad 91779-4897, Iran;
| | - Phil Coates
- Interdisciplinary Research Centre in Polymer Science and Technology (Polymer IRC), University of Bradford, Bradford BD7 1DP, UK;
| | - Mansour Youseffi
- Department of Biomedical and Electronics Engineering, School of Engineering, University of Bradford, Bradford BD7 1DP, UK; (M.B.); (M.Y.)
| | - Farshid Sefat
- Department of Biomedical and Electronics Engineering, School of Engineering, University of Bradford, Bradford BD7 1DP, UK; (M.B.); (M.Y.)
- Interdisciplinary Research Centre in Polymer Science and Technology (Polymer IRC), University of Bradford, Bradford BD7 1DP, UK;
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Sun L, Gu Q, Wang H, Yu J, Zhou X. Anhydrous proton conductivity of electrospun phosphoric acid-doped PVP-PVDF nanofibers and composite membranes containing MOF fillers. RSC Adv 2021; 11:29527-29536. [PMID: 35479537 PMCID: PMC9040628 DOI: 10.1039/d1ra04307b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 08/25/2021] [Indexed: 11/21/2022] Open
Abstract
A high-temperature proton exchange membrane was fabricated based on polyvinylidene fluoride (PVDF) and polyvinylpyrrolidone (PVP) blend polymer nanofibers. Using electrospinning method, abundant small ionic clusters can be formed and agglomerated on membrane surface, which would facilitate the proton conductivity. To further enhance the conductivity, phosphoric acid (PA) retention as well as mechanical strength, sulfamic acid (SA)-doped metal-organic framework MIL-101 was incorporated into PVP-PVDF blend nanofiber membranes. As a result, the anhydrous proton conductivity of the composite SA/MIL101@PVP-PVDF membrane reached 0.237 S cm-1 at 160 °C at a moderate acid doping level (ADL) of 12.7. The construction of long-range conducting network by electrospinning method combined with hot-pressing and the synergistic effect between PVP-PVDF, SA/MIL-101 and PA all contribute to the proton conducting behaviors of this composite membrane.
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Affiliation(s)
- Lian Sun
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology Changsha 410073 China
| | - Quanchao Gu
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology Changsha 410073 China
| | - Honglei Wang
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology Changsha 410073 China
| | - Jinshan Yu
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology Changsha 410073 China
| | - Xingui Zhou
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology Changsha 410073 China
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Presley KF, Fan F, DiRando NM, Shahhosseini M, Rao JZ, Tedeschi A, Castro CE, Lannutti JJ. Injectable, dispersible polysulfone-polysulfone core-shell particles for optical oxygen sensing. J Appl Polym Sci 2021; 138:50603. [PMID: 36091476 PMCID: PMC9455784 DOI: 10.1002/app.50603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Accepted: 01/31/2021] [Indexed: 11/12/2022]
Abstract
Injectable sensors can significantly improve the volume of critical biomedical information emerging from the human body in response to injury or disease. Optical oxygen sensors with rapid response times can be achieved by incorporating oxygen-sensitive luminescent molecules within polymeric matrices with suitably high surface area to volume ratios. In this work, electrospraying utilizes these advances to produce conveniently injectable, oxygen sensing particles made up of a core-shell polysulfone-polysulfone structure containing a phosphorescent oxygen-sensitive palladium porphyrin species within the core. Particle morphology is highly dependent on solvent identity and electrospraying parameters; DMF offers the best potential for the creation of uniform, sub-micron particles. Total internal reflection fluorescence (TIRF) microscopy confirms the existence of both core-shell structure and oxygen sensitivity. The dissolved oxygen response time is rapid (<0.30 s), ideal for continuous real-time monitoring of oxygen concentration. The incorporation of Pluronic F-127 surfactant enables efficient dispersion; selection of an appropriate electrospraying solvent (DMF) yields particles readily injected even through a <100 μm diameter needle.
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Affiliation(s)
- Kayla F Presley
- Department of Materials Science and Engineering, The Ohio State University, 116 W 19th Avenue, Columbus, OH 43210, USA
| | - Fan Fan
- Department of Materials Science and Engineering, The Ohio State University, 116 W 19th Avenue, Columbus, OH 43210, USA; Center for Chronic Brain Injury Program, The Ohio State University, Columbus, OH 43210, USA
| | - Nicole M DiRando
- Department of Materials Science and Engineering, The Ohio State University, 116 W 19th Avenue, Columbus, OH 43210, USA
| | - Melika Shahhosseini
- Department of Mechanical and Aerospace Engineering, The Ohio State University, 201 W 19th Avenue, Columbus, OH 43210, USA
| | - Jim Z Rao
- Department of Materials Science and Engineering, The Ohio State University, 116 W 19th Avenue, Columbus, OH 43210, USA
| | - Andrea Tedeschi
- Center for Chronic Brain Injury Program, The Ohio State University, Columbus, OH 43210, USA; Department of Neuroscience, Wexner Medical Center, The Ohio State University, 460W 12th Avenue, Columbus, OH 43210, USA
| | - Carlos E Castro
- Department of Mechanical and Aerospace Engineering, The Ohio State University, 201 W 19th Avenue, Columbus, OH 43210, USA
| | - John J Lannutti
- Department of Materials Science and Engineering, The Ohio State University, 116 W 19th Avenue, Columbus, OH 43210, USA; Center for Chronic Brain Injury Program, The Ohio State University, Columbus, OH 43210, USA
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Birhanu G, Doosti-Telgerd M, Zandi-Karimi A, Karimi Z, Porgham Daryasari M, Akbari Javar H, Seyedjafari E. Enhanced proliferation and osteogenic differentiation of mesenchymal stem cells by diopside coated Poly-L-lactic Acid-Based nanofibrous scaffolds. INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2021.1879078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Gebremariam Birhanu
- Department of Biotechnology, University of Tehran, Tehran, Iran
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, International campus (TUMS-IC), Tehran, Iran
- School of Pharmacy, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Mehdi Doosti-Telgerd
- Cell Therapy and Regenerative Medicine Comprehensive Center, Kerman University of Medical Sciences, Kerman, Iran
| | | | - Zohreh Karimi
- Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Porgham Daryasari
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, International campus (TUMS-IC), Tehran, Iran
- Department of Pharmaceutical Biomaterials, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Hamid Akbari Javar
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, International campus (TUMS-IC), Tehran, Iran
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Taskin MB, Ahmad T, Wistlich L, Meinel L, Schmitz M, Rossi A, Groll J. Bioactive Electrospun Fibers: Fabrication Strategies and a Critical Review of Surface-Sensitive Characterization and Quantification. Chem Rev 2021; 121:11194-11237. [DOI: 10.1021/acs.chemrev.0c00816] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Mehmet Berat Taskin
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
| | - Taufiq Ahmad
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
| | - Laura Wistlich
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
| | - Lorenz Meinel
- Institute of Pharmacy and Food Chemistry and Helmholtz Institute for RNA Based Infection Research, 97074 Würzburg, Germany
| | - Michael Schmitz
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
| | - Angela Rossi
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
| | - Jürgen Groll
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
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Girgis GNS. Formulation and Evaluation of Atorvastatin Calcium-Poly-ε-Caprolactone Nanoparticles Loaded Ocular Inserts for Sustained Release and Antiinflammatory Efficacy. Curr Pharm Biotechnol 2021; 21:1688-1698. [PMID: 32427080 DOI: 10.2174/1389201021666200519133350] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 04/21/2020] [Accepted: 05/30/2020] [Indexed: 11/22/2022]
Abstract
PURPOSE The work was performed to investigate the feasibility of preparing ocular inserts loaded with Poly-ε-Caprolactone (PCL) nanoparticles as a sustained ocular delivery system. METHODS First, Atorvastatin Calcium-Poly-ε-Caprolactone (ATC-PCL) nanoparticles were prepared and characterized. Then, the optimized nanoparticles were loaded within inserts formulated with Methylcellulose (MC) and Polyvinyl Alcohol (PVA) by a solvent casting technique and evaluated physically, for in-vitro drug release profile. Finally, an in-vivo study was performed on the selected formulation to prove non-irritability and sustained ocular anti-inflammatory efficacy compared with free drug-loaded ocuserts. RESULTS The results revealed (ATC-PCL) nanoparticles prepared with 0.5% pluronic F127 were optimized with 181.72±3.6 nm particle size, 0.12±0.02 (PDI) analysis, -27.4± 0.69 mV zeta potential and 62.41%±4.7% entrapment efficiency. Nanoparticles loaded ocuserts manifested compatibility between drug and formulation polymers. Moreover, formulations complied with average weight 0.055±0.002 to 0.143±0.023 mg, and accepted pH. ATC-PCL nanoparticles loaded inserts prepared by 5% MC showed more sustained, prolonged in-vitro release over 24h. In-vivo study emphasized non-irritability, ocular anti-inflammatory effectiveness represented by smaller lid closure scores, and statistically significant lowering in PMN count after 3h. CONCLUSION These findings proposed a possibly simple, new and affordable price technique to prepare promising (ATC-PCL) nanoparticles loaded inserts to achieve sustained release with prolonged antiinflammatory efficacy.
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Affiliation(s)
- Germeen N S Girgis
- Department of Pharmaceutics, Faculty of Pharmacy, Mansoura University, 35516, Mansoura, Egypt
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Barani H, Haseloer A, Mathur S, Klein A. Sustained release of a thiosemicarbazone from antibacterial electrospun poly(lactic‐co‐glycolic acid) fiber mats. POLYM ADVAN TECHNOL 2020. [DOI: 10.1002/pat.5043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Alexander Haseloer
- Department of Chemistry, Institute for Inorganic Chemistry University of Cologne Cologne Germany
| | - Sanjay Mathur
- Department of Chemistry, Institute for Inorganic Chemistry University of Cologne Cologne Germany
| | - Axel Klein
- Department of Carpet University of Birjand Birjand Iran
- Department of Chemistry, Institute for Inorganic Chemistry University of Cologne Cologne Germany
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12
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Barani H, Khorashadizadeh M, Haseloer A, Klein A. Characterization and Release Behavior of a Thiosemicarbazone from Electrospun Polyvinyl Alcohol Core-Shell Nanofibers. Polymers (Basel) 2020; 12:E1488. [PMID: 32635276 PMCID: PMC7407991 DOI: 10.3390/polym12071488] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 06/29/2020] [Accepted: 06/30/2020] [Indexed: 11/16/2022] Open
Abstract
Mats of polyvinyl alcohol (PVA) core-shell nanofibers were produced using coaxial electrospinning in the presence of a thiosemicarbazone (TSC) N4-(S)-1-phenylethyl)-2-(pyridin-2-yl-ethylidene)hydrazine-1-carbothioamide (HapyTSCmB). Monolithic fibers with 0% or 5% TSC and core-shell fibers with 10% TSC in the spinning solution were studied to compare stability and release rates. SEM showed the formation of uniform, bead-free, cylindrical, and smooth fibers. NMR spectroscopy and thermal analysis (TG/DTA) gave proof for the chemical integrity of the TSC in the fiber mats after the electrospinning process. Attenuated total reflection Fourier-transform infrared (ATR-FTIR) spectroscopy showed no TSC on the surface of the PVA/TSC-PVA fibers confirming the core-shell character. The TSC release profiles of the fibers as studied using UV-vis absorption spectroscopy showed a slower release from the PVA/TSC-PVA core-shell structure compared with the monolithic PVA/TSC fibers as well as lower cumulative release percentage (17%). Out of several release models, the Korsmeyer-Peppas model gave the best fit to the experimental data. The main release phase can be described with a Fick-type diffusion mechanism. Antibacterial properties were tested against the Gram-positive Staphylococcus aureus bacterium and gave a minimal inhibitory concentration of 12.5 μg/mL. 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazoliumbromide (MTT)-based cytotoxicity experiments showed that the cell viability of fibroblast at different contents of TSC was slightly decreased from 1.5% up to 3.5% when compared to control cells.
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Affiliation(s)
- Hossein Barani
- Department of Carpet, Faculty of Arts, University of Birjand, Birjand 9717434765, Iran
| | - Mohsen Khorashadizadeh
- Department of Medical Biotechnology, Birjand University of Medical Sciences, Birjand 9717853577, Iran;
| | - Alexander Haseloer
- Department of Chemistry, Institute for Inorganic Chemistry, University of Cologne, Greinstrasse 6, D-50939 Cologne, Germany;
| | - Axel Klein
- Department of Carpet, Faculty of Arts, University of Birjand, Birjand 9717434765, Iran
- Department of Chemistry, Institute for Inorganic Chemistry, University of Cologne, Greinstrasse 6, D-50939 Cologne, Germany;
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Akpan UM, Pellegrini M, Obayemi JD, Ezenwafor T, Browl D, Ani CJ, Yiporo D, Salifu A, Dozie-Nwachukwu S, Odusanya S, Freeman J, Soboyejo WO. Prodigiosin-loaded electrospun nanofibers scaffold for localized treatment of triple negative breast cancer. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 114:110976. [PMID: 32994026 DOI: 10.1016/j.msec.2020.110976] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 04/11/2020] [Accepted: 04/15/2020] [Indexed: 01/16/2023]
Abstract
Hybrid composite nanofibers, with the potential to enhance cell adhesion while improving sustained drug release profiles, were fabricated by the blend electrospinning of poly(d,l-lactic-co-glycolic acid) (PLGA), gelatin, pluronic F127 and prodigiosin (PG). Scanning Electron Microscopy (SEM) images of the nanofibers revealed diameters of 1.031 ± 0.851 μm and 1.349 ± 1.264 μm, corresponding to PLGA/Ge-PG and PLGA/Ge-F127/Ge, respectively. The Young's moduli were also determined to be 1.446 ± 0.496 kPa and 1.290 ± 0.617 kPa, while the ultimate tensile strengths were 0.440 ± 0.117 kPa and 0.185 ± 0.480 kPa for PLGA/Ge-PG and PLGA/Ge-F127/Ge, respectively. In-vitro drug release profiles showed initial (burst) release for a period of 1 h to be 26.000 ± 0.004% and 16.000 ± 0.015% for PLGA/Ge and PLGA/Ge-F127 nanofibers, respectively. This was followed by 12 h of sustained release, and subsequent slow sustained release of PG from the composite nanofibers. The cumulative release of PG (for three days) was determined to be 82.0 ± 0.1% for PLGA/Ge and 49.7 ± 0.1% for PLGA/Ge-F127 nanofibers. The release exponents (n) show that both nanofibers exhibit diffusion-controlled release by non-Fickian (zeroth order) and quasi-Fickian diffusion in the initial and sustained release regimes, respectively. The suitability of the composite nanofibers for supporting cell proliferation and viability, as well as improving sustained release of the drug were explored. The in-vitro effects of cancer drug (PG) release were also studied on breast cancer cell lines (MCF-7 and MDA-MB-231 cells). The implications of the results are discussed for the potential applications of drug-nanofiber scaffolds as capsules for localized delivery of chemotherapeutic drugs for the treatment of triple negative breast cancer.
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Affiliation(s)
- U M Akpan
- Department of Materials Science and Engineering, African University of Science and Technology, Federal Capital Territory, Abuja, Nigeria
| | - M Pellegrini
- Department of Biomedical Engineering, Rutgers University, New Brunswick, NJ. USA
| | - J D Obayemi
- Department of Mechanical Engineering, Worcester Polytechnic Institute, Higgings Lab, 100 Institute Road, Worcester, MA 01609, USA
| | - T Ezenwafor
- Department of Materials Science and Engineering, African University of Science and Technology, Federal Capital Territory, Abuja, Nigeria
| | - D Browl
- Department of Biomedical Engineering, Rutgers University, New Brunswick, NJ. USA
| | - C J Ani
- Department of Theoretical and Applied Physics, African University of Science and Technology, Federal Capital Territory, Abuja, Nigeria
| | - D Yiporo
- Department of Mechanical Engineering, Ashesi University Berekuso, Ghana
| | - A Salifu
- Department of Mechanical Engineering, Worcester Polytechnic Institute, Higgings Lab, 100 Institute Road, Worcester, MA 01609, USA
| | - S Dozie-Nwachukwu
- Biotechnology and Genetic Engineering Advance Laboratory, Sheda Sciencee and Technology Complex (SHESTCO), Abuja, Federal Capital Territory, Nigeria
| | - S Odusanya
- Biotechnology and Genetic Engineering Advance Laboratory, Sheda Sciencee and Technology Complex (SHESTCO), Abuja, Federal Capital Territory, Nigeria
| | - J Freeman
- Department of Biomedical Engineering, Rutgers University, New Brunswick, NJ. USA
| | - W O Soboyejo
- Department of Materials Science and Engineering, African University of Science and Technology, Federal Capital Territory, Abuja, Nigeria; Department of Mechanical Engineering, Worcester Polytechnic Institute, Higgings Lab, 100 Institute Road, Worcester, MA 01609, USA.
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14
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Park J. Functional Fibers, Composites and Textiles Utilizing Photothermal and Joule Heating. Polymers (Basel) 2020; 12:E189. [PMID: 31936785 PMCID: PMC7022820 DOI: 10.3390/polym12010189] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 12/11/2019] [Accepted: 01/06/2020] [Indexed: 02/07/2023] Open
Abstract
This review focuses on the mechanism of adjusting the thermal environment surrounding the human body via textiles. Recently highlighted technologies for thermal management are based on the photothermal conversion principle and Joule heating for wearable electronics. Recent innovations in this technology are described, with a focus on reports in the last three years and are categorized into three subjects: (1) thermal management technologies of a passive type using light irradiation of the outside environment (photothermal heating), (2) those of an active type employing external electrical circuits (Joule heating), and (3) biomimetic structures. Fibers and textiles from the design of fibers and textiles perspective are also discussed with suggestions for future directions to maximize thermal storage and to minimize heat loss.
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Affiliation(s)
- Juhyun Park
- School of Chemical Engineering and Materials Science, Institute of Energy-Converting Soft Materials, Chung-Ang University, Seoul 06974, Korea
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15
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Fibrous Materials Made of Poly( ε-caprolactone)/Poly(ethylene oxide) -b-Poly( ε-caprolactone) Blends Support Neural Stem Cells Differentiation. Polymers (Basel) 2019; 11:polym11101621. [PMID: 31597231 PMCID: PMC6835932 DOI: 10.3390/polym11101621] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 09/22/2019] [Accepted: 09/27/2019] [Indexed: 02/07/2023] Open
Abstract
In this work, we design and produce micron-sized fiber mats by blending poly(ε-caprolactone) (PCL) with small amounts of block copolymers poly(ethylene oxide)m-block-poly(ε-caprolactone)n (PEOm-b-PCLn) using electrospinning. Three different PEOm-b-PCLn block copolymers, with different molecular weights of PEO and PCL, were synthesized by ring opening polymerization of ε-caprolactone using PEO as initiator and stannous octoate as catalyst. The polymer blends were prepared by homogenous solvent mixing using dichloromethane for further electrospinning procedures. After electrospinning, it was found that the addition to PCL of the different block copolymers produced micron-fibers with smaller width, equal or higher hydrophilicity, lower Young modulus, and rougher surfaces, as compared with micron-fibers obtained only with PCL. Neural stem progenitor cells (NSPC), isolated from rat brains and grown as neurospheres, were cultured on the fibrous materials. Immunofluorescence assays showed that the NSPC are able to survive and even differentiate into astrocytes and neurons on the synthetic fibrous materials without any growth factor and using the fibers as guidance. Disassembling of the cells from the NSPC and acquisition of cell specific molecular markers and morphology progressed faster in the presence of the block copolymers, which suggests the role of the hydrophilic character and porous topology of the fiber mats.
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16
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Spasova M, Manolova N, Rashkov I, Naydenov M. Electrospun 5-chloro-8-hydroxyquinoline-Loaded Cellulose Acetate/Polyethylene Glycol Antifungal Membranes Against Esca. Polymers (Basel) 2019; 11:E1617. [PMID: 31590385 PMCID: PMC6835752 DOI: 10.3390/polym11101617] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 09/30/2019] [Accepted: 10/02/2019] [Indexed: 11/19/2022] Open
Abstract
Esca is one of the earliest described diseases in grapevines and causes trunk damage and the sudden wilting of the entire plant; it is caused mainly by the species Phaeomoniella chlamydospora (P. chlamydospora) and Phaeoacremonium aleophilum (P. aleophilum). In practice, there are no known curative approaches for fighting esca directly, which is a huge problem for preserving vineyards. Micro- and nanofibrous membranes from cellulose acetate (CA) and cellulose acetate/polyethylene glycol (CA/PEG) containing 5-chloro-8-hydroxyquinolinol (5-Cl8Q) were successfully prepared by electrospinning. The surface morphologies and optical and mechanical properties of the membranes were characterized by using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible spectroscopy (UV-Vis), water contact angle measurements and mechanical tests. It was found that the bioactive compound release was facilitated by PEG. The antifungal activities of the obtained materials against P. chlamydospora and P. aleophilum were studied. We have demonstrated that 5-Cl8Q is an efficient and sustainable antifungal agent against P. chlamydospora and P. aleophilum. Moreover, for the first time, the present study reveals the possibility of using electrospun polymer membranes containing 5-Cl8Q which impede the penetration and growth of P. chlamydospora and P. aleophilum. Thus, the obtained fibrous materials can be suitable candidates for plant protection against diverse fungi.
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Affiliation(s)
- Mariya Spasova
- Laboratory of Bioactive Polymers, Institute of Polymers, Bulgarian Academy of Sciences, Acad. G. Bonchev St, bl. 103A, BG-1113 Sofia, Bulgaria.
| | - Nevena Manolova
- Laboratory of Bioactive Polymers, Institute of Polymers, Bulgarian Academy of Sciences, Acad. G. Bonchev St, bl. 103A, BG-1113 Sofia, Bulgaria.
| | - Iliya Rashkov
- Laboratory of Bioactive Polymers, Institute of Polymers, Bulgarian Academy of Sciences, Acad. G. Bonchev St, bl. 103A, BG-1113 Sofia, Bulgaria.
| | - Mladen Naydenov
- Department of Microbiology, Agricultural University, BG-4000 Plovdiv, Bulgaria.
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17
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Thaiane da Silva T, Cesar GB, Francisco CP, Mossini GG, Castro Hoshino LV, Sato F, Radovanovic E, Silva Agostini DL, Caetano W, Hernandes L, Matioli G. Electrospun curcumin/polycaprolactone/copolymer F‐108 fibers as a new therapy for wound healing. J Appl Polym Sci 2019. [DOI: 10.1002/app.48415] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Thamara Thaiane da Silva
- Postgraduate Program in Food Science, State University of Maringá (UEM), 5790 Colombo Avenue Maringá 87020‐900 PR Brazil
| | - Gabriel Batista Cesar
- Department of ChemistryState University of Maringá (UEM), 5790 Colombo Avenue Maringá 87020‐900 PR Brazil
| | - Carolina Pereira Francisco
- Department of Chemical EngineeringState University of Maringá (UEM), 5790 Colombo Avenue Maringá 87020‐900 PR Brazil
| | - Guilherme Galerani Mossini
- Department of MedicineState University of Maringá (UEM), 5790 Colombo Avenue Maringá 87020‐900 PR Brazil
| | | | - Francielle Sato
- Department of PhysicsState University of Maringá (UEM), 5790 Colombo Avenue Maringá 87020‐900 PR Brazil
| | - Eduardo Radovanovic
- Department of ChemistryState University of Maringá (UEM), 5790 Colombo Avenue Maringá 87020‐900 PR Brazil
| | - Deuber Lincon Silva Agostini
- Department of PhysicsState University of São Paulo (UNESP), 305 Roberto Simonsen Street 19060‐900 Presidente Prudente SP Brazil
| | - Wilker Caetano
- Department of ChemistryState University of Maringá (UEM), 5790 Colombo Avenue Maringá 87020‐900 PR Brazil
| | - Luzmarina Hernandes
- Department of PhysicsState University of Maringá (UEM), 5790 Colombo Avenue Maringá 87020‐900 PR Brazil
- Department of Morphological SciencesState University of Maringá (UEM), 5790 Colombo Avenue Maringá 87020‐900 PR Brazil
| | - Graciette Matioli
- Postgraduate Program in Food Science, State University of Maringá (UEM), 5790 Colombo Avenue Maringá 87020‐900 PR Brazil
- Department of PharmacyState University of Maringá (UEM), 5790 Colombo Avenue Maringá 87020‐900 PR Brazil
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18
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Souza DCD, Abreu HDLD, Oliveira PVD, Capelo LP, Passos-Bueno MR, Catalani LH. A fast degrading PLLA composite with a high content of functionalized octacalcium phosphate mineral phase induces stem cells differentiation. J Mech Behav Biomed Mater 2019; 93:93-104. [DOI: 10.1016/j.jmbbm.2019.02.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 02/02/2019] [Accepted: 02/03/2019] [Indexed: 01/24/2023]
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19
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Chen L, Wang S, Yu Q, Topham PD, Chen C, Wang L. A comprehensive review of electrospinning block copolymers. SOFT MATTER 2019; 15:2490-2510. [PMID: 30860535 DOI: 10.1039/c8sm02484g] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Electrospinning provides a versatile and cost-effective route for the generation of continuous nanofibres with high surface area-to-volume ratio from various polymers. In parallel, block copolymers (BCPs) are promising candidates for many diverse applications, where nanoscale operation is exploited, owing to their intrinsic self-assembling behaviour at these length scales. Judicious combination of BCPs (with their ability to make nanosized domains at equilibrium) and electrospinning (with its ability to create nano- and microsized fibres and particles) allows one to create BCPs with high surface area-to-volume ratio to deliver higher efficiency or efficacy in their given application. Here, we give a comprehensive overview of the wide range of reports on BCP electrospinning with focus placed on the use of molecular design alongside control over specific electrospinning type and post-treatment methodologies to control the properties of the resultant fibrous materials. Particular attention is paid to the applications of these materials, most notably, their use as biomaterials, separation membranes, sensors, and electronic materials.
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Affiliation(s)
- Lei Chen
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China.
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20
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Temnov AA, Sklifas AN, Kukushkin NI, Krechetov SP, Gorina EV, Astrelina TA, Usupzhanova DY, Suchkova YB, Kobzeva IV, Samoilov AS. The Effect of Polyoxyethylene–Polyoxypropylene Triblock Copolymers on the Loading Degree of Poly-(Lactic-co-Glycolic Acid) Copolymer-Based Microparticles Containing Chlorin e6 and Ethidium Bromide in Mesenchymal Stem Cells. Biophysics (Nagoya-shi) 2019. [DOI: 10.1134/s0006350919020179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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21
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Grasel FDS, Behrens MC, Strassburger D, Einloft S, Diz FM, Morrone FB, Wolf CR, Ligabue RA. SYNTHESIS, CHARACTERIZATION AND in vitro CYTOTOXICITY OF Acacia mearnsii PROANTHOCYANIDIN LOADED PLGA MICROPARTICLES. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2019. [DOI: 10.1590/0104-6632.20190361s20170154] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Fábio dos S. Grasel
- Pontifícia Universidade Católica do Rio Grande do Sul, Brasil; TANAC S/A, Brasil
| | | | | | - Sandra Einloft
- Pontifícia Universidade Católica do Rio Grande do Sul, Brasil; Pontifícia Universidade Católica do Rio Grande do Sul, Brasil
| | - Fernando M. Diz
- Pontifícia Universidade Católica do Rio Grande do Sul, Brasil
| | | | | | - Rosane A. Ligabue
- Pontifícia Universidade Católica do Rio Grande do Sul, Brasil; Pontifícia Universidade Católica do Rio Grande do Sul, Brasil
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22
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Rychter M, Milanowski B, Grześkowiak BF, Jarek M, Kempiński M, Coy EL, Borysiak S, Baranowska-Korczyc A, Lulek J. Cilostazol-loaded electrospun three-dimensional systems for potential cardiovascular application: Effect of fibers hydrophilization on drug release, and cytocompatibility. J Colloid Interface Sci 2019; 536:310-327. [DOI: 10.1016/j.jcis.2018.10.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 10/09/2018] [Accepted: 10/10/2018] [Indexed: 01/06/2023]
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23
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Zargarian SS, Haddadi-Asl V, Azarnia M, Kafrashian Z, Seyedjafari E. Surfactant-assisted-water-exposed versus surfactant-aqueous-solution-exposed electrospinning of novel super hydrophilic Polycaprolactone-based fibers: Cell culture studies. J Biomed Mater Res A 2019; 107:1204-1212. [PMID: 30672114 DOI: 10.1002/jbm.a.36616] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 12/29/2018] [Accepted: 01/03/2019] [Indexed: 01/13/2023]
Abstract
Blend electrospun scaffolds composed of Polycaprolactone and Pluronic are suitable for bone tissue engineering due to their excellent biocompatibility and hydrophilicity. However, exceeding from certain amounts of Pluronic, surface enrichment of this polymer leads to segregation of Pluronic chains within the fiber, endangering the integrity and mechanical properties of the scaffold. In this article, a novel method of blend electrospinning has been employed using a parallel water supply, positioning the Pluronic chains on the surface, thus enhancing the miscibility within the fibers. Water uptake test revealed the super hydrophilicity of obtained scaffolds. Atr-FTIR and X-ray photoelectron spectroscopy verified a higher percentage of Pluronics on the surface in comparison with conventional blend electrospinning. Tensile test demonstrated improved mechanical properties of the modified scaffolds. The results of cytocompatibility tests have also revealed enhanced viability of cells on these scaffolds confirming their great promise for clinical applications. © 2019 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 107A: 1204-1212, 2019.
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Affiliation(s)
- Seyed Shahrooz Zargarian
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, Iran
| | - Vahid Haddadi-Asl
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, Iran
| | - Mojdeh Azarnia
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, Iran
| | - Zahra Kafrashian
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, Iran
| | - Ehsan Seyedjafari
- Department of Biotechnology, College of Science, University of Tehran, Tehran, Iran
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24
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Zargarian SS, Haddadi-Asl V, Kafrashian Z, Azarnia M, Mirhosseini MM, Seyedjafari E. Surfactant-assisted-water-exposed versus surfactant-aqueous-solution-exposed electrospinning of novel super hydrophilic polycaprolactone based fibers: Analysis of drug release behavior. J Biomed Mater Res A 2018; 107:597-609. [PMID: 30417973 DOI: 10.1002/jbm.a.36575] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 10/22/2018] [Accepted: 10/27/2018] [Indexed: 11/08/2022]
Abstract
Surface hydrophilicity and scaffold integrity determine the drug release behavior of drug loaded electrospun fibrous mats. When mixture miscibility is acceptable, blend electrospinning of hydrophobic with hydrophilic polymers can improve scaffold hydrophilicity while the hydrophobic polymer maintains the mechanical strength of scaffold. Polycaprolactone (PCL) and Pluronic P123 (P123) blend electrospinning has been investigated. In routine blend electrospinning, surface enrichment of Pluronic sets a limit for P123 weight ratio in which exceeding from that limit causes the excess P123 to be accumulated within the electrospun fiber core. To overcome this setback, a method named surfactant assisted water exposed (SAWE) electrospinning was introduced which was proven to be effective for increasing the surface enrichment of Pluronic. In order to test the validity of this method, the electrospinning of solution containing PCL which is exposed to aqueous solution of P123 was investigated. This new method was named surfactant aqueous solution exposed (SASE) electrospinning. Myelin formation at the contact interface of aqueous solution and chloroform solution was studied and it was found that this layer can effectively barricade the migration of Pluronic chains between immiscible phases. For SASE, fiber surface coverage by P123 was uneven and loose. Electrospun scaffolds from SAWE and SASE were loaded with drug to investigate the effect of the exposure time during electrospinning on in vitro drug release. By increasing the exposure time, the abnormal two-stage phased release profile of SAWE became normal with moderate initial burst. Longer exposure time increased the initial burst of the drug loaded SASE fibers. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 107A: 597-609, 2019.
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Affiliation(s)
- Seyed Shahrooz Zargarian
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, Iran
| | - Vahid Haddadi-Asl
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, Iran
| | - Zahra Kafrashian
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, Iran
| | - Mojdeh Azarnia
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, Iran
| | | | - Ehsan Seyedjafari
- Department of Biotechnology, College of Science, University of Tehran, Tehran, Iran
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25
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Nazeri N, Derakhshan MA, Faridi-Majidi R, Ghanbari H. Novel electro-conductive nanocomposites based on electrospun PLGA/CNT for biomedical applications. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2018; 29:168. [PMID: 30392048 DOI: 10.1007/s10856-018-6176-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Accepted: 10/17/2018] [Indexed: 06/08/2023]
Abstract
Electro-conductive nanocomposites have several applications in biomedical field. Development of a biocompatible electro-conductive polymeric materials is therefore of prime importance. In this study, electro-conductive nanofibrous mats of PLGA/CNT were fabricated through different methods including blend electrospinning, simultaneous PLGA electrospinning and CNT electrospraying and ultrasound-induced adsorption of CNTs on the electrospun PLGA nanofibers. The morphology and diameter of fibers were characterized by SEM and TEM, showing the lowest average diameters of 477 ± 136 nm for PLGA/MWCNT blend nanocomposites. MWCNT-sprayed PLGA specimens showed significant lower water contact angle (83°), electrical resistance (3.0 × 104 Ω) and higher mechanical properties (UTS: 5.50 ± 0.46 MPa) compared to the untreated PLGA scaffolds. Also, results of PC12 cell study demonstrated highest viability percentage on the MWCNT-sprayed PLGA nanofibers. We propose that the conductive nanocomposites have capability to use as tool for the neural regeneration and biosensors.
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Affiliation(s)
- Niloofar Nazeri
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Ali Derakhshan
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Reza Faridi-Majidi
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Hossein Ghanbari
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran.
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26
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Preparation of gentamicin sulfate eluting fiber mats by emulsion and by suspension electrospinning. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 94:86-93. [PMID: 30423773 DOI: 10.1016/j.msec.2018.09.019] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 08/20/2018] [Accepted: 09/06/2018] [Indexed: 12/22/2022]
Abstract
This work investigates the immobilization of the antibiotic gentamicin sulfate (GS) in electrospun fiber mats composed of poly(lactic acid) (PLA), poly(ε-caprolactone) (PCL) and the copolymer poly(lactic-co-glycolic acid) (PLGA). Since GS is highly water soluble but weakly soluble in the organic solvents commonly used in the electrospinning process, two methods of immobilization were investigated: by suspension electrospinning, in which GS particles were directly dispersed in the polymeric organic solutions, and by emulsion electrospinning, in which GS was solubilized in an aqueous phase that was then dispersed in the organic polymeric solution containing the surfactant SPAN80. Fibers with distinct diameters and morphologies were obtained for the different methods and compositions. Contrary to the fibers prepared by suspension electrospinning, emulsion electrospinning based fibers exhibited an excellent wettability, allegedly due to the effect of the surfactant SPAN80. Despite the differences between both methods the produced mats presented similar GS release profiles, with a considerable burst release in the first 8 h followed by a gradual release of the remaining drug during the next 4-6 days. Finally, all GS loaded fiber mats proved to have an antibacterial effect against the bacterial strain Staphylococcus aureus.
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27
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Birhanu G, Tanha S, Akbari Javar H, Seyedjafari E, Zandi-Karimi A, Kiani Dehkordi B. Dexamethasone loaded multi-layer poly-l-lactic acid/pluronic P123 composite electrospun nanofiber scaffolds for bone tissue engineering and drug delivery. Pharm Dev Technol 2018; 24:338-347. [PMID: 29799305 DOI: 10.1080/10837450.2018.1481429] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
In tissue engineering, it is common to mix drugs that can control proliferation and differentiation of cells into polymeric solutions as part of composite to get bioactive scaffolds. However, direct incorporation of drugs might potentially result in undesired burst release. To overcome this problem, here we developed electrospun multilayer drug loaded poly-l-lactic acid/pluronic P123 (PLLA-P123) composite scaffolds. The drug was loaded into the middle layer. The surface, the mechanical and physiochemical properties of the scaffolds were evaluated. The drug release profiles were monitored. Finally, the osteogenic proliferation and differentiation potential were determined. The scaffolds fabricated here have appropriate surface properties, but with different mechanical strength and osteogenic proliferation and differentiation. Multi-layer scaffolds where the drug was in the middle layer and PLLA-plasma and PLLA-P123 with cover layer showed the best osteogenic proliferation and differentiation than the other groups of scaffolds. The drug release profiles of the scaffolds were completely different: single layer scaffolds showed burst release within the first day, while multilayer scaffolds showed controlled release. Therefore, the multilayer drug loaded scaffolds prepared have dual benefits can provide both better osteogenesis and controlled release of drugs and bioactive molecules at the implant site.
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Affiliation(s)
- Gebremariam Birhanu
- a Department of Pharmaceutics, Faculty of Pharmacy , Tehran University of Medical Sciences, International Campus (TUMS-IC) , Tehran , Iran.,b School of Pharmacy, College of Health Sciences , Addis Ababa University , Addis Ababa , Ethiopia
| | - Shima Tanha
- c Department of Pharmaceutics, Faculty of Pharmacy , Tehran University of Medical Sciences , Tehran , Iran
| | - Hamid Akbari Javar
- c Department of Pharmaceutics, Faculty of Pharmacy , Tehran University of Medical Sciences , Tehran , Iran
| | - Ehsan Seyedjafari
- d Department of Biotechnology, College of Science , University of Tehran , Tehran , Iran
| | - Ali Zandi-Karimi
- d Department of Biotechnology, College of Science , University of Tehran , Tehran , Iran
| | - Banafsheh Kiani Dehkordi
- c Department of Pharmaceutics, Faculty of Pharmacy , Tehran University of Medical Sciences , Tehran , Iran
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Fan F, Wang L, Ouyang Z, Wen Y, Lu X. Development and optimization of a tumor targeting system based on microbial synthesized PHA biopolymers and PhaP mediated functional modification. Appl Microbiol Biotechnol 2018; 102:3229-3241. [PMID: 29497797 DOI: 10.1007/s00253-018-8790-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2017] [Revised: 01/14/2018] [Accepted: 01/15/2018] [Indexed: 01/08/2023]
Abstract
Polyhydroxyalkanoate (PHA) is a class of microbial synthesized biodegradable and biocompatible aliphatic polymer which has been developed into nanoparticles (NPs) for sustained release of hydrophobic compounds. Taking advantage of the natural PHA binding protein PhaP which could be steadily adsorbed onto PHA NPs through hydrophobic interaction, a tumor targeting system was developed in this study by presenting an epidermal growth factor receptor (EGFR)-targeting peptide (ETP) on the surface of PHA NPs, via PhaP mediated adsorption. To reveal the effects of residual emulsifiers on PhaP mediated ETP modification and optimize the tumor targeting capacity of the system, a novel emulsifier-free PHA NPs (EF-NPs) was fabricated together with other two kinds of conventional emulsifier-required PHA NPs (PVA-NPs and P68-NPs, which were prepared with poly(vinyl alcohol) (PVA) and Pluronic F68 as emulsifiers, respectively). By analyzing the surface hydrophobicity, the amount of adsorbed fusion protein, and the cellular uptake of all kinds of PHA NPs, our results demonstrated that EF-NPs with stronger surface hydrophobicity were the most proper formulation for further PhaP mediated ETP functionalization. The residual PVA and Pluronic F68 affected the modification efficiency and secondary structure of ETP-PhaP fusion protein, and finally obstructed the targeting effect of ETP-PhaP modified PVA-NPs and P68-NPs to EGFR over-expressed tumor cells. The animal experiment further confirmed the effectiveness and feasibility of in vivo application of ETP-PhaP functionalized EF-NPs, indicating that it could be served as a promising tumor targeting system with satisfactory EGFR targeting ability. This PhaP mediated bio-modification process also opens a wide way for developing various PHA-based targeting systems by presenting different tumor or other tissue-specific targeting peptides.
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Affiliation(s)
- Fan Fan
- Department of Biological Science and Bioengineering, Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi, People's Republic of China
| | - Leilei Wang
- Department of Biological Science and Bioengineering, Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi, People's Republic of China
| | - Zhenlin Ouyang
- Department of Biological Science and Bioengineering, Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi, People's Republic of China
| | - Yurong Wen
- Department of Biological Science and Bioengineering, Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi, People's Republic of China
| | - Xiaoyun Lu
- Department of Biological Science and Bioengineering, Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi, People's Republic of China.
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Li W, Hu Y, Shi L, Zhang X, Xiong L, Zhang W, Ullah I. Electrospinning of Polycaprolactone/Pluronic F127 dissolved in glacial acetic acid: fibrous scaffolds fabrication, characterization and in vitro evaluation. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2018; 29:1155-1167. [PMID: 29455624 DOI: 10.1080/09205063.2018.1439431] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Abstracts The Polycaprolactone (PCL) fibrous scaffolds in nano to micro scale have been considered as excellent templates for cell culture and tissue growth. The hydrophobic nature of the PCL, however, yields low initial cell seeding density, heterogeneous cell spreading and slow cell growth rate. Therefore, in this study the surface hydrophilic fibrous scaffolds were directly fabricated by the electrospinning of PCL solutions with small quantities (0.5-5%) of Pluronic F127 (PEO100-PPO65-PEO100) dissolved in benign solvent of glacial acetic acid. The clear and miscible solutions were achieved by controlling the proper F127 content in the blend solutions. The continuous and smooth fibers with average diameters from 0.71 to 1.43 μm made up the fibrous scaffolds in non-woven mode. Then the water wetting angle of the scaffolds could be adjusted from 126° to 0° by varying F127 content owing to its hydrophilic PEO chains presented on surface the blended fibers. Finally, it was demonstrated that the blended fibrous scaffolds with the F127 content less than 1% exhibited better cell attachment, proliferation and spreading performance than those of pure PCL scaffolds.
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Affiliation(s)
- Wenchao Li
- a State Key Lab of Material Processing and Die & Mould Technology, School of Materials Science and Engineering , Huazhong University of Science and Technology , Wuhan , P. R. China
| | - Yiqiang Hu
- b Department of Orthopaedics , Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , P. R. China
| | - Lei Shi
- a State Key Lab of Material Processing and Die & Mould Technology, School of Materials Science and Engineering , Huazhong University of Science and Technology , Wuhan , P. R. China
| | - Xianglin Zhang
- a State Key Lab of Material Processing and Die & Mould Technology, School of Materials Science and Engineering , Huazhong University of Science and Technology , Wuhan , P. R. China
| | - Liming Xiong
- b Department of Orthopaedics , Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , P. R. China
| | - Wancheng Zhang
- a State Key Lab of Material Processing and Die & Mould Technology, School of Materials Science and Engineering , Huazhong University of Science and Technology , Wuhan , P. R. China
| | - Ismat Ullah
- a State Key Lab of Material Processing and Die & Mould Technology, School of Materials Science and Engineering , Huazhong University of Science and Technology , Wuhan , P. R. China
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Esmaili Z, Bayrami S, Dorkoosh FA, Akbari Javar H, Seyedjafari E, Zargarian SS, Haddadi-Asl V. Development and characterization of electrosprayed nanoparticles for encapsulation of Curcumin. J Biomed Mater Res A 2017; 106:285-292. [DOI: 10.1002/jbm.a.36233] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 07/12/2017] [Accepted: 09/08/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Zahra Esmaili
- Department of Pharmaceutics, Faculty of Pharmacy; Tehran University of Medical Sciences; Tehran Iran
| | - Samaneh Bayrami
- Department of Pharmaceutics, Faculty of Pharmacy; Tehran University of Medical Sciences; Tehran Iran
| | - Farid Abedin Dorkoosh
- Department of Pharmaceutics, Faculty of Pharmacy; Tehran University of Medical Sciences; Tehran Iran
| | - Hamid Akbari Javar
- Department of Pharmaceutics, Faculty of Pharmacy; Tehran University of Medical Sciences; Tehran Iran
| | - Ehsan Seyedjafari
- Department of Biotechnology, College of Science; University of Tehran; Tehran Iran
| | - Seyed Shahrooz Zargarian
- Department of Polymer Engineering and Color Technology; Amirkabir University of Technology; Tehran Iran
| | - Vahid Haddadi-Asl
- Department of Polymer Engineering and Color Technology; Amirkabir University of Technology; Tehran Iran
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Rocha VG, García-Tuñón E, Botas C, Markoulidis F, Feilden E, D'Elia E, Ni N, Shaffer M, Saiz E. Multimaterial 3D Printing of Graphene-Based Electrodes for Electrochemical Energy Storage Using Thermoresponsive Inks. ACS APPLIED MATERIALS & INTERFACES 2017; 9:37136-37145. [PMID: 28920439 DOI: 10.1021/acsami.7b10285] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The current lifestyles, increasing population, and limited resources result in energy research being at the forefront of worldwide grand challenges, increasing the demand for sustainable and more efficient energy devices. In this context, additive manufacturing brings the possibility of making electrodes and electrical energy storage devices in any desired three-dimensional (3D) shape and dimensions, while preserving the multifunctional properties of the active materials in terms of surface area and conductivity. This paves the way to optimized and more efficient designs for energy devices. Here, we describe how three-dimensional (3D) printing will allow the fabrication of bespoke devices, with complex geometries, tailored to fit specific requirements and applications, by designing water-based thermoresponsive inks to 3D-print different materials in one step, for example, printing the active material precursor (reduced chemically modified graphene (rCMG)) and the current collector (copper) for supercapacitors or anodes for lithium-ion batteries. The formulation of thermoresponsive inks using Pluronic F127 provides an aqueous-based, robust, flexible, and easily upscalable approach. The devices are designed to provide low resistance interface, enhanced electrical properties, mechanical performance, packing of rCMG, and low active material density while facilitating the postprocessing of the multicomponent 3D-printed structures. The electrode materials are selected to match postprocessing conditions. The reduction of the active material (rCMG) and sintering of the current collector (Cu) take place simultaneously. The electrochemical performance of the rCMG-based self-standing binder-free electrode and the two materials coupled rCMG/Cu printed electrode prove the potential of multimaterial printing in energy applications.
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Affiliation(s)
- Victoria G Rocha
- School of Engineering, Cardiff University , Cardiff CF24 3AA, U.K
| | - Esther García-Tuñón
- School of Engineering & Materials Innovation Factory, University of Liverpool , Liverpool L69 3GH, U.K
| | - Cristina Botas
- CIC Energigune, Parque Tecnológico de Álava , Albert Einstein 48, 01510 Miñano, Álava, Spain
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Deng L, Kang X, Liu Y, Feng F, Zhang H. Effects of surfactants on the formation of gelatin nanofibres for controlled release of curcumin. Food Chem 2017; 231:70-77. [DOI: 10.1016/j.foodchem.2017.03.027] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 02/20/2017] [Accepted: 03/06/2017] [Indexed: 01/08/2023]
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Birhanu G, Akbari Javar H, Seyedjafari E, Zandi-Karimi A, Dusti Telgerd M. An improved surface for enhanced stem cell proliferation and osteogenic differentiation using electrospun composite PLLA/P123 scaffold. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2017; 46:1274-1281. [PMID: 28835133 DOI: 10.1080/21691401.2017.1367928] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Poly-L-lactic acid (PLLA) nano fibrous scaffolds prepared by electrospinning technology have been used widely in tissue engineering applications. However, PLLA scaffolds are hydrophobic in nature, moreover the fibrous porous structure produced by electrospinning makes the scaffolds even more hydrophobic which generally limits cell attachment and proliferation. Polymer blending is one of the several efforts used so far to enhance hydrophilicity and recognized as an easy cost-effective approach for the manipulation physiochemical properties of polymeric biomaterials. Pluronic block copolymers containing hydrophilic poly(ethylene oxide) (PEO) blocks and hydrophobic poly(propylene oxide) (PPO) blocks are arranged in triblock structure: PEO-PPO-PEO. It is commonly used recently to blend hydrophobic polymers to enhance hydrophilicity for pharmaceutical and tissue engineering applications. In this study, novel pluronic P123 blend PLLA electrospun nanofibre scaffolds with improved hydrophilicity and biological properties were fabricated. The surface morphology and surface chemistry of the nanofibre scaffolds were characterized by scanning electron microscope (SEM) and FTIR analyses. Surface hydrophilicity and change in mechanical properties were studied. The ability of the scaffolds to support the attachment, and proliferation and differentiation of human adipose tissue derived MSCs, were evaluated generally. The fabricated scaffolds have completely improved, hydrophilicity, similar osteogenic differentiation potential with plasma-treated PLLA nanofibre scaffold, and hence P123 blend PLLA electrospun nanofibre scaffolds are a very good and cost effective choice as a scaffold for bone tissue engineering application.
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Affiliation(s)
- Gebremariam Birhanu
- a Department of Pharmaceutics, Faculty of Pharmacy , Tehran University of Medical Sciences, International Campus (TUMS-IC) , Tehran , Iran.,b School of Pharmacy, College of Health Sciences , Addis Ababa University , Addis Ababa , Ethiopia
| | - Hamid Akbari Javar
- c Department of Pharmaceutics, Faculty of Pharmacy , Tehran University of Medical Sciences , Tehran , Iran
| | - Ehsan Seyedjafari
- d Department of Biotechnology, College of Science , University of Tehran , Tehran , Iran
| | - Ali Zandi-Karimi
- d Department of Biotechnology, College of Science , University of Tehran , Tehran , Iran
| | - Mehdi Dusti Telgerd
- e Department of Pharmaceutical Biomaterials, Faculty of Pharmacy , Tehran University of Medical Sciences , Tehran , Iran
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Mao W, Yoo HS. Pluronic-Induced Surface Etching of Biodegradable Nanofibers for Enhanced Adsorption of Serum Protein. Macromol Biosci 2017; 17. [DOI: 10.1002/mabi.201700057] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 03/23/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Wei Mao
- Department of Biomedical Materials Engineering; College of Biomedical Science; Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Hyuk Sang Yoo
- Department of Biomedical Materials Engineering; College of Biomedical Science; Kangwon National University; Chuncheon 24341 Republic of Korea
- Institute of Bioscience and Biotechnology; Kangwon National University; Chuncheon 24341 Republic of Korea
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Kurusu RS, Demarquette NR. Surface properties evolution in electrospun polymer blends by segregation of hydrophilic or amphiphilic molecules. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.02.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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36
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Nune M, Subramanian A, Krishnan UM, Kaimal SS, Sethuraman S. Self-assembling peptide nanostructures on aligned poly(lactide-co-glycolide) nanofibers for the functional regeneration of sciatic nerve. Nanomedicine (Lond) 2017; 12:219-235. [DOI: 10.2217/nnm-2016-0323] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: Regeneration of functional peripheral nerve tissue at critical-sized defect requires extracellular matrix analogs impregnated with appropriate biosignals to regulate the cell fate process and subsequent tissue progression. The aim of the study was to develop electrospun aligned nanofibers as architectural analogs integrated with RADA16-I-BMHP1 as biofunctional peptides. Materials & methods: Aligned poly(lactide-co-glycolide) (PLGA)-RADA16-I-BMHP1 nanofibers were fabricated and characterized for their in vitro potential using rat Schwann cell line and in vivo potential using a 10 mm sciatic nerve transection rat model. Results: PLGA-peptide scaffolds significantly promoted higher expression of genotypic markers and bipolar extension of Schwann cells. Further, PLGA-peptide treated animals promoted the native collagen organization, remyelination and showed significantly higher recovery of sensorimotor and motor function than PLGA-treated groups (p < 0.05). Conclusion: Our results demonstrate that self-assembling peptide nanostructures on aligned PLGA nanofibers provided better cell–matrix communication with significant functional restoration of the sciatic nerve.
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Affiliation(s)
- Manasa Nune
- Centre for Nanotechnology & Advanced Biomaterials, School of Chemical & Biotechnology, SASTRA University, Thanjavur - 613401, Tamil Nadu, India
| | - Anuradha Subramanian
- Centre for Nanotechnology & Advanced Biomaterials, School of Chemical & Biotechnology, SASTRA University, Thanjavur - 613401, Tamil Nadu, India
| | - Uma Maheswari Krishnan
- Centre for Nanotechnology & Advanced Biomaterials, School of Chemical & Biotechnology, SASTRA University, Thanjavur - 613401, Tamil Nadu, India
| | - Suraj Sasidhara Kaimal
- Veterinary dispensary - Paliyode, Department of Animal Husbandry, Government of Kerala, Trivandrum - 695124, Kerala, India
| | - Swaminathan Sethuraman
- Centre for Nanotechnology & Advanced Biomaterials, School of Chemical & Biotechnology, SASTRA University, Thanjavur - 613401, Tamil Nadu, India
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A multi-walled silk fibroin/silk sericin nerve conduit coated with poly(lactic-co-glycolic acid) sheath for peripheral nerve regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 73:319-332. [PMID: 28183615 DOI: 10.1016/j.msec.2016.12.085] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 11/24/2016] [Accepted: 12/17/2016] [Indexed: 12/20/2022]
Abstract
The linearly oriented multi-walled silk fibroin/silk sericin (SF/SS) nerve conduits (NCs) can provide physical cues similar to native peripheral nerve fasciculi, but the mechanical properties of which are not excellent enough. In this study, NCs with a novel and bionic design with dual structures were developed. The important features of our NCs is that the internal skeleton (the multi-walled SF/SS conduits) has a bionic structure similar to the architecture of native peripheral nerve fasciculi, which is beneficial for nerve regeneration, and the outer sheath (the hollow poly(lactic-co-glycolic acid) [PLGA] conduits) could provide strong mechanical protection for the internal skeleton. The linearly oriented multi-walled SF/SS conduit was fabricated and inserted in the hollow PLGA sheath lumen and then used for the bridge across the sciatic nerve defect in rats. The outcome of the peripheral nerve repair post implantation was evaluated. The functional and morphological parameters were examined and showed that the novel PLGA-coated SF/SS NCs could promote peripheral nerve regeneration, approaching those elicited by nerve autografts that are the first candidate for repair of peripheral nerve defects. Thus, these updated NCs have potential usefulness to enhance functional recovery after repair of peripheral nerve defect.
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Bhattacharjee A, Kumar K, Arora A, Katti DS. Fabrication and characterization of Pluronic modified poly(hydroxybutyrate) fibers for potential wound dressing applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 63:266-73. [DOI: 10.1016/j.msec.2016.02.074] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Revised: 02/15/2016] [Accepted: 02/26/2016] [Indexed: 11/27/2022]
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Zargarian SS, Haddadi-Asl V. Facile fabrication of novel polycaprolactone-based electrospun fibers using in-process water exposure. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2016. [DOI: 10.1080/1023666x.2016.1192837] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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40
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Zargarian SS, Haddadi-Asl V. Surfactant-assisted water exposed electrospinning of novel super hydrophilic polycaprolactone based fibers. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2016; 45:871-880. [DOI: 10.1080/21691401.2016.1182921] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- S. Sh. Zargarian
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, Iran
| | - V. Haddadi-Asl
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, Iran
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PLGA nanofibers blended with designer self-assembling peptides for peripheral neural regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 62:329-37. [DOI: 10.1016/j.msec.2016.01.057] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Revised: 12/31/2015] [Accepted: 01/24/2016] [Indexed: 12/30/2022]
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Nanoparticle-Laden Contact Lens for Controlled Ocular Delivery of Prednisolone: Formulation Optimization Using Statistical Experimental Design. Pharmaceutics 2016; 8:pharmaceutics8020014. [PMID: 27104555 PMCID: PMC4932477 DOI: 10.3390/pharmaceutics8020014] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 03/11/2016] [Accepted: 04/01/2016] [Indexed: 11/25/2022] Open
Abstract
Human eye is one of the most accessible organs in the body, nonetheless, its physiology and associated precorneal factors such as nasolacrimal drainage, blinking, tear film, tear turnover, and induced lacrimation has significantly decreased the residence time of any foreign substances including pharmaceutical dosage forms. Soft contact lenses are promising delivery devices that can sustain the drug release and prolong residence time by acting as a geometric barrier to drug diffusion to tear fluid. This study investigates experimental parameters such as composition of polymer mixtures, stabilizer and the amount of active pharmaceutical ingredient on the preparation of a polymeric drug delivery system for the topical ocular administration of Prednisolone. To achieve this goal, prednisolone-loaded poly (lactic-co-glycolic acid) (PLGA) nanoparticles were prepared by single emulsion solvent evaporation method. Prednisolone was quantified using a validated high performance liquid chromatography (HPLC) method. Nanoparticle size was mostly affected by the amount of co-polymer (PLGA) used whereas drug load was mostly affected by amount of prednisolone (API) used. Longer homogenization time along with higher amount of API yielded the smallest size nanoparticles. The nanoparticles prepared had an average particle size of 347.1 ± 11.9 nm with a polydispersity index of 0.081. The nanoparticles were then incorporated in the contact lens mixture before preparing them. Clear and transparent contact lenses were successfully prepared. When the nanoparticle (NP)-loaded contact lenses were compared with control contact lenses (unloaded NP contact lenses), a decrease in hydration by 2% (31.2% ± 1.25% hydration for the 0.2 g loaded NP contact lenses) and light transmission by 8% (unloaded NP contact lenses 94.5% NP 0.2 g incorporated contact lenses 86.23%). The wettability of the contact lenses remained within the desired value (<90 °C) even upon incorporation of the NP. NP alone and NP-loaded contact lenses both displayed a slow invitro drug release of drug over 24 h; where 42.3% and 10.8% prednisolone release were achieved, respectively. Contact lenses can be used as a medicated device to sustain ocular drug delivery and improve patient compliance; nonetheless, patients and healthcare professionals’ acceptability and perceptions of the new formulations entail further investigations.
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Kurusu RS, Demarquette NR. Wetting of Hydrophilic Electrospun Mats Produced by Blending SEBS with PEO-PPO-PEO Copolymers of Different Molecular Weight. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:1846-1853. [PMID: 26824615 DOI: 10.1021/acs.langmuir.5b04287] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The interaction of electrospun mats with water is critical for many possible applications, and the water contact angle on the surface is the parameter usually measured to characterize wetting. Although useful for hydrophobic surfaces, this approach is limited for hydrophilic mats, where wicking also has to be considered. In this case, it is still unclear how the fiber surface chemical composition and morphology will affect the wetting behavior of electrospun mats. In this work, wetting was studied with different hydrophilic membranes produced by blending thermoplastic elastomer poly(styrene)-b-poly(ethylene-butylene)-b-poly(styrene) (SEBS) with amphiphilic poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) (PEO-PPO-PEO) molecules. Three different types of PEO-PPO-PEO, with different molar masses, PEO content, and physical form were used. The effect of these differences on the wetting behavior of the electrospun mats was evaluated by contact angle goniometry, wicking measurements, and different imaging techniques. X-ray photoelectron spectroscopy was used to characterize the surface chemical composition. The smaller molecules quickly saturated the surface at low concentrations, making the mats hydrophilic. The sheath of PEO-PPO-PEO also resulted in fast absorption of water, when comparing the saturated and nonsaturated surfaces. Longer PEO chain-ends seemed to hinder complete segregation and also led to a higher activation time when in contact with water. Liquid PEO-PPO-PEO was easily leached by water.
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Affiliation(s)
- Rafael S Kurusu
- Mechanical Engineering Department, École de technologie supérieure - ÉTS, 1100 Notre-Dame Street West, Montréal, Québec H3C 1K3, Canada
| | - Nicole R Demarquette
- Mechanical Engineering Department, École de technologie supérieure - ÉTS, 1100 Notre-Dame Street West, Montréal, Québec H3C 1K3, Canada
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Mirhosseini MM, Haddadi-Asl V, Zargarian SS. Fabrication and characterization of hydrophilic poly(ε-caprolactone)/pluronic P123 electrospun fibers. J Appl Polym Sci 2016. [DOI: 10.1002/app.43345] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- M. M. Mirhosseini
- Department of Polymer Engineering and Color Technology; Amirkabir University of Technology; Tehran Iran
| | - V. Haddadi-Asl
- Department of Polymer Engineering and Color Technology; Amirkabir University of Technology; Tehran Iran
| | - S. Sh. Zargarian
- Department of Polymer Engineering and Color Technology; Amirkabir University of Technology; Tehran Iran
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45
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Li H, Song P, Qiao T, Cui Q, Song X, Zhang B. A quaternary composite fiber membrane for guided tissue regeneration. POLYM ADVAN TECHNOL 2015. [DOI: 10.1002/pat.3616] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Haotian Li
- School of Chemical Engineering; Changchun University of Technology; Changchun 130012 China
| | - Ping Song
- School of Chemical Engineering; Changchun University of Technology; Changchun 130012 China
| | - Tiankui Qiao
- School of Chemical Engineering; Changchun University of Technology; Changchun 130012 China
| | - Qingqing Cui
- School of Chemical Engineering; Changchun University of Technology; Changchun 130012 China
| | - Xiaofeng Song
- School of Chemical Engineering; Changchun University of Technology; Changchun 130012 China
| | - Baochang Zhang
- School of Chemical Engineering; Changchun University of Technology; Changchun 130012 China
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Mo Y, Guo R, Liu J, Lan Y, Zhang Y, Xue W, Zhang Y. Preparation and properties of PLGA nanofiber membranes reinforced with cellulose nanocrystals. Colloids Surf B Biointerfaces 2015; 132:177-84. [DOI: 10.1016/j.colsurfb.2015.05.029] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 05/13/2015] [Accepted: 05/15/2015] [Indexed: 02/03/2023]
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Kurusu RS, Demarquette NR. Blending and Morphology Control To Turn Hydrophobic SEBS Electrospun Mats Superhydrophilic. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:5495-503. [PMID: 25913789 DOI: 10.1021/acs.langmuir.5b00814] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Thermoplastic elastomer SEBS, a triblock copolymer composed of styrene (S) and ethylene-co-butylene (EB) blocks, can be dissolved and processed by electrospinning to produce flexible nonwoven mats that can be interesting for applications like filtration or separation membranes. Controlling surface properties such as hydrophobicity/hydrophilicity is critical to achieving a desired performance. In this study, hydrophobic electrospun SEBS mats were obtained, following which an amphiphilic molecule (Pluronic F127) was solution-blended with SEBS prior to electrospinning, in a bid to produce a hydrophilic membrane. The result was a fast-spreading superhydrophilic mat with thinner fibers that preserved the flexibility of the SEBS. The morphologies of nonwoven mats, flat films (prepared by dip-coating using identical solutions) and of the surface of individual fibers were characterized using different microscopy techniques (optical, scanning electron microscopy and atomic force microscopy). Chemical analysis by X-ray photoelectron spectroscopy (XPS) revealed a large F127 concentration in the outermost surface layer. In addition, an analysis of dip-coated flat films revealed that for 20 wt % of F127, there was a change in the blend morphology from dispersed F127-rich regions in the SEBS matrix to an interconnected phase homogeneously distributed across the film that resembled grain boundaries of micellar crystals. Our results indicated that this morphology change at 20 wt % of F127 also occurred to some extent in the electrospun fibers and this, combined with the large surface area of the mats, led to a drastic reduction in the contact angle and fast water absorption, turning hydrophobic electrospun mats superhydrophilic.
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Affiliation(s)
- Rafael S Kurusu
- Mechanical Engineering Department, École de Technologie Supérieure - ÉTS, 1100 Notre-Dame Street West, Montréal, Québec H3C 1K3, Canada
| | - Nicole R Demarquette
- Mechanical Engineering Department, École de Technologie Supérieure - ÉTS, 1100 Notre-Dame Street West, Montréal, Québec H3C 1K3, Canada
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Zhu T, Chen S, Li W, Lou J, Wang J. Flurbiprofen axetil loaded coaxial electrospun poly(vinyl pyrrolidone)-nanopoly(lactic-co-glycolic acid) core-shell composite nanofibers: Preparation, characterization, and anti-adhesion activity. J Appl Polym Sci 2015. [DOI: 10.1002/app.41982] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Tonghe Zhu
- School of Fashion Design; Shanghai University of Engineering Science; Shanghai 201620 People's Republic of China
- Multidisciplinary Center for Advanced Materials; Shanghai University of Engineering Science; Shanghai 201620 People's Republic of China
| | - Sihao Chen
- Multidisciplinary Center for Advanced Materials; Shanghai University of Engineering Science; Shanghai 201620 People's Republic of China
- College of Chemistry and Chemical Engineering; Shanghai University of Engineering Science; Shanghai 201620 People's Republic of China
| | - Wenyao Li
- School of Materials Engineering; Shanghai University of Engineering Science; Shanghai 201620 People's Republic of China
| | - Jianzhong Lou
- Multidisciplinary Center for Advanced Materials; Shanghai University of Engineering Science; Shanghai 201620 People's Republic of China
- College of Chemistry and Chemical Engineering; Shanghai University of Engineering Science; Shanghai 201620 People's Republic of China
- Department of Chemical Engineering and Biomedical Engineering; North Carolina A&T State University; 1601 East Market Street Greensboro North Carolina 27411
| | - Jihu Wang
- Multidisciplinary Center for Advanced Materials; Shanghai University of Engineering Science; Shanghai 201620 People's Republic of China
- College of Chemistry and Chemical Engineering; Shanghai University of Engineering Science; Shanghai 201620 People's Republic of China
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49
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Nune M, Krishnan UM, Sethuraman S. Decoration of PLGA electrospun nanofibers with designer self-assembling peptides: a “Nano-on-Nano” concept. RSC Adv 2015. [DOI: 10.1039/c5ra13576a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
A composite neural scaffold which combines the topographical features of electrospun nanofibrous scaffolds and bioactive as well as nanostructured features of designer self-assembling peptides (“Nano on Nano” approach).
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Affiliation(s)
- Manasa Nune
- Centre of Nanotechnology & Advanced Biomaterials
- School of Chemical & Biotechnology
- SASTRA University
- Thanjavur
- India
| | - Uma Maheswari Krishnan
- Centre of Nanotechnology & Advanced Biomaterials
- School of Chemical & Biotechnology
- SASTRA University
- Thanjavur
- India
| | - Swaminathan Sethuraman
- Centre of Nanotechnology & Advanced Biomaterials
- School of Chemical & Biotechnology
- SASTRA University
- Thanjavur
- India
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50
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Thomas M, Arora A, Katti DS. Surface hydrophilicity of PLGA fibers governs in vitro mineralization and osteogenic differentiation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 45:320-32. [DOI: 10.1016/j.msec.2014.08.074] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 08/23/2014] [Accepted: 08/30/2014] [Indexed: 10/24/2022]
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