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Rahman SM, Tafreshi HV, Pourdeyhimi B. Physics‐based
deep neural network model to guide electrospinning polyurethane fibers. J Appl Polym Sci 2022. [DOI: 10.1002/app.53108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- S. Mashfiqur Rahman
- Department of Mechanical & Aerospace Engineering North Carolina State University Raleigh North Carolina USA
| | - Hooman Vahedi Tafreshi
- Department of Mechanical & Aerospace Engineering North Carolina State University Raleigh North Carolina USA
- The Nonwovens Institute, North Carolina State University Raleigh North Carolina USA
| | - Behnam Pourdeyhimi
- The Nonwovens Institute, North Carolina State University Raleigh North Carolina USA
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Ramirez M, Vaught L, Law C, Meyer JL, Elhajjar R. Electrospinning Processing Techniques for the Manufacturing of Composite Dielectric Elastomer Fibers. MATERIALS (BASEL, SWITZERLAND) 2021; 14:6288. [PMID: 34771814 PMCID: PMC8585266 DOI: 10.3390/ma14216288] [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: 08/10/2021] [Revised: 10/06/2021] [Accepted: 10/06/2021] [Indexed: 11/30/2022]
Abstract
Dielectric elastomers (DE) are novel composite architectures capable of large actuation strains and the ability to be formed into a variety of actuator configurations. However, the high voltage requirement of DE actuators limits their applications for a variety of applications. Fiber actuators composed of DE fibers are particularly attractive as they can be formed into artificial muscle architectures. The interest in manufacturing micro or nanoscale DE fibers is increasing due to the possible applications in tissue engineering, filtration, drug delivery, catalysis, protective textiles, and sensors. Drawing, self-assembly, template-direct synthesis, and electrospinning processing have been explored to manufacture these fibers. Electrospinning has been proposed because of its ability to produce sub-mm diameter size fibers. In this paper, we investigate the impact of electrospinning parameters on the production of composite dielectric elastomer fibers. In an electrospinning setup, an electrostatic field is applied to a viscous polymer solution at an electrode's tip. The polymer composite with carbon black and carbon nanotubes is expelled and accelerated towards a collector. Factors that are considered in this study include polymer concentration, solution viscosity, flow rate, electric field intensity, and the distance to the collector.
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Affiliation(s)
- Mirella Ramirez
- Department of Civil & Environmental Engineering, Department of Electrical Engineering, College of Engineering & Applied Science, University of Wisconsin-Milwaukee, 3200 N Cramer St., Milwaukee, WI 53211, USA; (M.R.); (C.L.)
| | - Louis Vaught
- ATSP Innovations, 6762 Shadyvilla Ln Bldg #3, Houston, TX 77055, USA; (L.V.); (J.L.M.)
| | - Chiu Law
- Department of Civil & Environmental Engineering, Department of Electrical Engineering, College of Engineering & Applied Science, University of Wisconsin-Milwaukee, 3200 N Cramer St., Milwaukee, WI 53211, USA; (M.R.); (C.L.)
| | - Jacob L. Meyer
- ATSP Innovations, 6762 Shadyvilla Ln Bldg #3, Houston, TX 77055, USA; (L.V.); (J.L.M.)
| | - Rani Elhajjar
- Department of Civil & Environmental Engineering, Department of Electrical Engineering, College of Engineering & Applied Science, University of Wisconsin-Milwaukee, 3200 N Cramer St., Milwaukee, WI 53211, USA; (M.R.); (C.L.)
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Abdullah MF, Nuge T, Andriyana A, Ang BC, Muhamad F. Core-Shell Fibers: Design, Roles, and Controllable Release Strategies in Tissue Engineering and Drug Delivery. Polymers (Basel) 2019; 11:E2008. [PMID: 31817133 PMCID: PMC6960548 DOI: 10.3390/polym11122008] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 11/30/2019] [Accepted: 12/02/2019] [Indexed: 01/04/2023] Open
Abstract
The key attributes of core-shell fibers are their ability to preserve bioactivity of incorporated-sensitive biomolecules (such as drug, protein, and growth factor) and subsequently control biomolecule release to the targeted microenvironments to achieve therapeutic effects. Such qualities are highly favorable for tissue engineering and drug delivery, and these features are not able to be offered by monolithic fibers. In this review, we begin with an overview on design requirement of core-shell fibers, followed by the summary of recent preparation methods of core-shell fibers, with focus on electrospinning-based techniques and other newly discovered fabrication approaches. We then highlight the importance and roles of core-shell fibers in tissue engineering and drug delivery, accompanied by thorough discussion on controllable release strategies of the incorporated bioactive molecules from the fibers. Ultimately, we touch on core-shell fibers-related challenges and offer perspectives on their future direction towards clinical applications.
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Affiliation(s)
- Muhammad Faiq Abdullah
- Department of Chemical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia;
- School of Bioprocess Engineering, Universiti Malaysia Perlis, Kompleks Pusat Pengajian Jejawi 3, Arau, Perlis 02600, Malaysia
| | - Tamrin Nuge
- Centre of Advanced Materials, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia; (T.N.); (A.A.)
| | - Andri Andriyana
- Centre of Advanced Materials, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia; (T.N.); (A.A.)
- Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Bee Chin Ang
- Department of Chemical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia;
- Centre of Advanced Materials, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia; (T.N.); (A.A.)
| | - Farina Muhamad
- Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
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Uematsu I, Uchida K, Nakagawa Y, Matsumoto H. Direct Observation and Quantitative Analysis of the Fiber Formation Process during Electrospinning by a High-Speed Camera. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b02352] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Ikuo Uematsu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
- Corporate Manufacturing Engineering Center, Toshiba Corporation, 33 Shin-Isogo-Cho, Isogo-ku, Yokohama 235-0017, Japan
| | - Kenya Uchida
- Corporate Manufacturing Engineering Center, Toshiba Corporation, 33 Shin-Isogo-Cho, Isogo-ku, Yokohama 235-0017, Japan
| | - Yasutada Nakagawa
- Corporate Manufacturing Engineering Center, Toshiba Corporation, 33 Shin-Isogo-Cho, Isogo-ku, Yokohama 235-0017, Japan
| | - Hidetoshi Matsumoto
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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Lauricella M, Melchionna S, Montessori A, Pisignano D, Pontrelli G, Succi S. Entropic lattice Boltzmann model for charged leaky dielectric multiphase fluids in electrified jets. Phys Rev E 2018; 97:033308. [PMID: 29776036 DOI: 10.1103/physreve.97.033308] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Indexed: 06/08/2023]
Abstract
We present a lattice Boltzmann model for charged leaky dielectric multiphase fluids in the context of electrified jet simulations, which are of interest for a number of production technologies including electrospinning. The role of nonlinear rheology on the dynamics of electrified jets is considered by exploiting the Carreau model for pseudoplastic fluids. We report exploratory simulations of charged droplets at rest and under a constant electric field, and we provide results for charged jet formation under electrospinning conditions.
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Affiliation(s)
- Marco Lauricella
- Istituto per le Applicazioni del Calcolo, Consiglio Nazionale delle Ricerche, Via dei Taurini 19, 00185 Rome, Italy
| | - Simone Melchionna
- Istituto dei Sistemi Complessi, Consiglio Nazionale delle Ricerche, Dipartimento di Fisica, Università di Roma Sapienza, Piazzale Aldo Moro 2, 00185 Rome, Italy
| | - Andrea Montessori
- Istituto per le Applicazioni del Calcolo, Consiglio Nazionale delle Ricerche, Via dei Taurini 19, 00185 Rome, Italy
- Department of Engineering, University of Rome "Roma Tre," Via della Vasca Navale 79, 00141 Rome, Italy
| | - Dario Pisignano
- Dipartimento di Fisica, Università di Pisa, Largo Bruno Pontecorvo 3, 56127 Pisa, Italy
- NEST, Istituto Nanoscienze-Consiglio Nazionale delle Ricerche, Piazza San Silvestro 12, 56127 Pisa, Italy
| | - Giuseppe Pontrelli
- Istituto per le Applicazioni del Calcolo, Consiglio Nazionale delle Ricerche, Via dei Taurini 19, 00185 Rome, Italy
| | - Sauro Succi
- Istituto per le Applicazioni del Calcolo, Consiglio Nazionale delle Ricerche, Via dei Taurini 19, 00185 Rome, Italy
- Harvard Institute for Applied Computational Science, Cambridge, Massachusetts 02138, USA
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Gadkari S. Influence of Polymer Relaxation Time on the Electrospinning Process: Numerical Investigation. Polymers (Basel) 2017; 9:polym9100501. [PMID: 30965804 PMCID: PMC6418928 DOI: 10.3390/polym9100501] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 09/30/2017] [Accepted: 10/08/2017] [Indexed: 11/16/2022] Open
Abstract
“Electrospinnability”, or the ease with which a solution can be used to obtain bead-free uniform fibers, depends on a large number of parameters, including solution properties, process parameters and ambient conditions. In this study, the effect of the polymer relaxation time on electrospinning of dilute polymer solutions is investigated numerically. It is shown that elastic stresses (ES) increase exponentially with the Deborah number (De). For each polymer concentration there exists a critical De below which the ES are insufficient to overcome capillary stresses (CS) and lead to the formation of beaded fibers. However, above the critical De, there is a higher probability of the ES overcoming the CS and leading to the formation of uniform fibers. This analysis suggests the possibility of improved electrospinnability even with dilute polymer solutions, provided the relaxation time is sufficiently large. It is also found that changes in the drag coefficient due to change in the polymer conformation and self-concentration of polymer molecules would become significant for the electrospinning of polymer solutions with a longer relaxation time and high conductivity.
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Affiliation(s)
- Siddharth Gadkari
- Department of Mechanical and Aerospace Engineering, Monash University, Clayton 3168, Australia.
- Department of Chemical Engineering, Indian Institute of Technology⁻Bombay, Mumbai 400076, India.
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