Electrospun polyurethane/carbon nanotube composites with different amounts of carbon nanotubes and almost the same fiber diameter for biomedical applications

Zadeh, Zahra Eivazi; Solouk, Atefeh; Shafieian, Mehdi; Nazarpak, Masoumeh Haghbin

doi:10.1016/j.msec.2020.111403

Cited by 49 publications

(29 citation statements)

References 62 publications

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“…This shows that GO nanofibers are well distributed in the PAN matrix, and this filler does not affect the crystal structure, it only changes the connection between the two phases (PAN and GO) and improves interfacial compatibility. The results from previous studies revealed that the addition of carbon nanotubes in polyurethane did not affect the structure of the composite crystals …”

Section: Resultsmentioning

confidence: 94%

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Dielectric Properties and Flexibility of Polyacrylonitrile/Graphene Oxide Composite Nanofibers

et al. 2022

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Energy storage and modern electronics industries are in essential need of high dielectric and highly flexible materials. In this study, polyacrylonitrile and reduced graphene oxide (PAN/GO) were prepared by electrospinning. The composite morphology produced a homogeneous, smooth, and flexible surface with high tensile strength and durability. The diameter of the fibers in the composite mats ranged from 232 to 592 nm. The X-ray diffraction pattern recording displayed a sharp peak characteristic centered between 20 and 30° angles with a maximum degree of crystallinity of 86.23%. The evaluation of the Fourier-transform infrared spectrum indicated the interaction between GO and PAN through hydrogen bonds. The differential scanning calorimetry measurements confirmed that GO acted as a nucleating agent that improves the thermal stability of the composite. The dielectric properties exhibited the relative permittivity of the composite of 86.4 with a dielectric loss (tan δ) of 4.97 at 10 2 Hz, and the maximum conductivity was achieved at 34.9 × 10 –6 Sm –1 at high frequencies.

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Section: Resultsmentioning

confidence: 94%

“…The results from previous studies revealed that the addition of carbon nanotubes in polyurethane did not affect the structure of the composite crystals. 83 …”

Section: Resultsmentioning

confidence: 99%

Dielectric Properties and Flexibility of Polyacrylonitrile/Graphene Oxide Composite Nanofibers

et al. 2022

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“…An essential disadvantage of electrospun fiber scaffolds is their low porosity and unsuitability for implant cell infiltration [ 112 ]. In particular, the pore size left for cells was smaller after the scaffolds were knitted, braided, twisted woven fibers and 3D printed.…”

Section: Electrospun Fiber Materials For Tendon Repairmentioning

confidence: 99%

Functional biomaterials for tendon/ligament repair and regeneration

Tang

Wang

Xiang

et al. 2022

Regenerative Biomaterials

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With an increase in life expectancy and the popularity of high-intensity exercise, the frequency of tendon and ligament injuries has also increased. Owing to the specificity of its tissue, the rapid restoration of injured tendons and ligaments is challenging for treatment. This review summarises the latest progress in cells, biomaterials, active molecules, and construction technology in treating tendon/ligament injuries. The characteristics of supports made of different materials and the development and application of different manufacturing methods are discussed. The development of natural polymers, synthetic polymers, and composite materials has boosted the use of scaffolds. In addition, the development of electrospinning and hydrogel technology has diversified the production and treatment of materials. First, this paper briefly introduces the structure, function, and biological characteristics of tendons/ligaments. Then, it summarises the advantages and disadvantages of different materials, such as natural polymer scaffolds, synthetic polymer scaffolds, composite scaffolds, and ECM-derived biological scaffolds, in the application of tendon/ligament regeneration. We then discuss the latest applications of electrospun fiber scaffolds and hydrogels in regeneration engineering. Finally, we discuss the current problems and future directions in the development of biomaterials for restoring damaged tendons and ligaments.

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“…For instance, electrospun nanofibers based on polymer/carbon nanotube (CNT) composites are very attractive to design composite nanofibers that combine remarkable mechanical and electronic properties. In particular, the application of electrostatic forces contribute to a preferential alignment of CNTs within the nanofibrous structure that can greatly improves the electrical and mechanical properties of fibers with effects on in vitro cell response [109]. Graphene oxide nanophases were embedded into PCL and gelatin nanofibers to produce innovative scaffolds with superior properties in terms of hydrophilicity, biodegradation features, and electrical conductivity suitable for neural tissue engineering, as well as controlled drug delivery [110].…”

Section: Composite Nanofibersmentioning

confidence: 99%

Topographical and Biomechanical Guidance of Electrospun Fibers for Biomedical Applications

et al. 2020

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Electrospinning is gaining increasing interest in the biomedical field as an eco-friendly and economic technique for production of random and oriented polymeric fibers. The aim of this review was to give an overview of electrospinning potentialities in the production of fibers for biomedical applications with a focus on the possibility to combine biomechanical and topographical stimuli. In fact, selection of the polymer and the eventual surface modification of the fibers allow selection of the proper chemical/biological signal to be administered to the cells. Moreover, a proper design of fiber orientation, dimension, and topography can give the opportunity to drive cell growth also from a spatial standpoint. At this purpose, the review contains a first introduction on potentialities of electrospinning for the obtainment of random and oriented fibers both with synthetic and natural polymers. The biological phenomena which can be guided and promoted by fibers composition and topography are in depth investigated and discussed in the second section of the paper. Finally, the recent strategies developed in the scientific community for the realization of electrospun fibers and for their surface modification for biomedical application are presented and discussed in the last section.

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Electrospun polyurethane/carbon nanotube composites with different amounts of carbon nanotubes and almost the same fiber diameter for biomedical applications

Cited by 49 publications

References 62 publications

Dielectric Properties and Flexibility of Polyacrylonitrile/Graphene Oxide Composite Nanofibers

Dielectric Properties and Flexibility of Polyacrylonitrile/Graphene Oxide Composite Nanofibers

Functional biomaterials for tendon/ligament repair and regeneration

Topographical and Biomechanical Guidance of Electrospun Fibers for Biomedical Applications

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