Mechanical and piezoelectric characterizations of electrospun PVDF-nanosilica fibrous scaffolds for biomedical applications

Haddadi, Seyyed Arash; Ghaderi, Saeed; Amini, Majed; Ramazani, S A Ahmad

doi:10.1016/j.matpr.2018.04.182

Cited by 41 publications

(26 citation statements)

References 17 publications

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“…The decrease observed at 20 wt% is also due to TiO 2 agglomeration. Finally, Figure D shows that the deformation at maximum presents a gradual decrease from around 98 ± 7% (for neat PET) to 61 ± 8% (for 20 wt% TiO 2 ), leading to less flexible fibrous mats, which is in agreement with literature …”

Section: Resultssupporting

confidence: 90%

Flexible electrospun PET/TiO₂ nanofibrous structures: Morphology, thermal and mechanical properties

Gallah

Mighri

Ajji

et al. 2020

Polymers for Advanced Techs

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In this study, a solvothermal method was used to synthesize anatase titanium dioxide (TiO 2 ) nanoparticles in the presence of oleic acid (OA) and oleylamine (OM) as morphology-directing agents. Functional nanocomposite fibers of poly(ethylene terephtalate) (PET) containing surfactants-capped TiO 2 nanoparticles were developed by electrospinning technique. The morphology, thermal stability and mechanical properties of PET/TiO 2 nanocomposite mats were investigated as a function of TiO 2 concentration. Morphology investigation showed interesting results in terms of the level of TiO 2 dispersion inside the fibers and the improvement of the quality (smoothness) of the fibers' surface when the synthesized nanorhombic TiO 2 nanoparticles were used compared to a commercial P25 TiO 2 (AEROXIDE P25) . The presence of OA and OM on the surface of the nanorhombic synthesized TiO 2 led to a significant improvement of TiO 2 dispersion inside the PET matrix. Furthermore, the physical interaction between the PET matrix and TiO 2 nanoparticles resulted in an enhanced thermal stability, and an increase of the Young's modulus and tensile strength for TiO 2 concentration up to 10 wt%. K E Y W O R D S electrospinning, nanocomposites, PET/TiO 2 nanofibers, solvothermal synthesis, TiO 2

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Section: Resultssupporting

confidence: 90%

Flexible electrospun PET/TiO₂ nanofibrous structures: Morphology, thermal and mechanical properties

Gallah

Mighri

Ajji

et al. 2020

Polymers for Advanced Techs

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“…These nanomaterials include carbon nanofiber, carbon nanotube, graphene oxide (GO), and barium titanate [57,58,59,60,74,75,76,77,78,79,80,81]. Furthermore, metal (e.g., silver) and metal oxide nanoparticles like zinc oxide, and titania can also induce β-PVDF formation [82,92,93,94,95]. The extent of β-phase induced depends greatly on the properties of nanomaterials (e.g., type, shape, and size), surface chemistry and dispersion state.…”

Section: Structural Behaviormentioning

confidence: 99%

“…Aided by recent advances in nanotechnology, a wide range of nanomaterials can be synthesized for biomedical and industrial applications [61,62,63,64,65,66,67,68,69,70,71,72]. In particular, clay nanoplatelets, carbon nanotubes, graphene/graphene oxide and silica nanoparticles have been reported to be very effective to induce β-phase in PVDF [57,59,73,74,75,76,77,78,79,80,81,82]. As is generally recognized, electrospinning can fabricate micro- and nanofibers with interconnecting pores, resembling the natural ECM in tissues [83].…”

Section: Introductionmentioning

confidence: 99%

Electrospun Polyvinylidene Fluoride-Based Fibrous Scaffolds with Piezoelectric Characteristics for Bone and Neural Tissue Engineering

2019

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Polyvinylidene fluoride (PVDF) and polyvinylidene fluoride-trifluoroethylene (P(VDF-TrFE) with excellent piezoelectricity and good biocompatibility are attractive materials for making functional scaffolds for bone and neural tissue engineering applications. Electrospun PVDF and P(VDF-TrFE) scaffolds can produce electrical charges during mechanical deformation, which can provide necessary stimulation for repairing bone defects and damaged nerve cells. As such, these fibrous mats promote the adhesion, proliferation and differentiation of bone and neural cells on their surfaces. Furthermore, aligned PVDF and P(VDF-TrFE) fibrous mats can enhance neurite growth along the fiber orientation direction. These beneficial effects derive from the formation of electroactive, polar β-phase having piezoelectric properties. Polar β-phase can be induced in the PVDF fibers as a result of the polymer jet stretching and electrical poling during electrospinning. Moreover, the incorporation of TrFE monomer into PVDF can stabilize the β-phase without mechanical stretching or electrical poling. The main drawbacks of electrospinning process for making piezoelectric PVDF-based scaffolds are their small pore sizes and the use of highly toxic organic solvents. The small pore sizes prevent the infiltration of bone and neuronal cells into the scaffolds, leading to the formation of a single cell layer on the scaffold surfaces. Accordingly, modified electrospinning methods such as melt-electrospinning and near-field electrospinning have been explored by the researchers to tackle this issue. This article reviews recent development strategies, achievements and major challenges of electrospun PVDF and P(VDF-TrFE) scaffolds for tissue engineering applications.

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“…It was also designed to monitor various human gestures such as bending, stretching, compression, movement, coughing, and swallowing. Electrospun PVDF-nanosilica scaffolds were prepared, and their mechanical and piezoelectric properties were studied for biomedical applications by Haddadi et al [46]. Hydrophilic and hydrophobic silica nanoparticles were used to construct the composite fiber, and the average fiber diameter was increased by nanoparticle addition.…”

Section: Polyvinylidene Fluoride (Pvdf)mentioning

confidence: 99%

Biopolymer Coatings for Biomedical Applications

Nathanael

2020

Polymers

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Biopolymer coatings exhibit outstanding potential in various biomedical applications, due to their flexible functionalization. In this review, we have discussed the latest developments in biopolymer coatings on various substrates and nanoparticles for improved tissue engineering and drug delivery applications, and summarized the latest research advancements. Polymer coatings are used to modify surface properties to satisfy certain requirements or include additional functionalities for different biomedical applications. Additionally, polymer coatings with different inorganic ions may facilitate different functionalities, such as cell proliferation, tissue growth, repair, and delivery of biomolecules, such as growth factors, active molecules, antimicrobial agents, and drugs. This review primarily focuses on specific polymers for coating applications and different polymer coatings for increased functionalization. We aim to provide broad overview of latest developments in the various kind of biopolymer coatings for biomedical applications, in order to highlight the most important results in the literatures, and to offer a potential outline for impending progress and perspective. Some key polymer coatings were discussed in detail. Further, the use of polymer coatings on nanomaterials for biomedical applications has also been discussed, and the latest research results have been reported.

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Mechanical and piezoelectric characterizations of electrospun PVDF-nanosilica fibrous scaffolds for biomedical applications

Cited by 41 publications

References 17 publications

Flexible electrospun PET/TiO₂ nanofibrous structures: Morphology, thermal and mechanical properties

Flexible electrospun PET/TiO₂ nanofibrous structures: Morphology, thermal and mechanical properties

Electrospun Polyvinylidene Fluoride-Based Fibrous Scaffolds with Piezoelectric Characteristics for Bone and Neural Tissue Engineering

Biopolymer Coatings for Biomedical Applications

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Mechanical and piezoelectric characterizations of electrospun PVDF-nanosilica fibrous scaffolds for biomedical applications

Cited by 41 publications

References 17 publications

Flexible electrospun PET/TiO2 nanofibrous structures: Morphology, thermal and mechanical properties

Flexible electrospun PET/TiO2 nanofibrous structures: Morphology, thermal and mechanical properties

Electrospun Polyvinylidene Fluoride-Based Fibrous Scaffolds with Piezoelectric Characteristics for Bone and Neural Tissue Engineering

Biopolymer Coatings for Biomedical Applications

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Product

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Flexible electrospun PET/TiO₂ nanofibrous structures: Morphology, thermal and mechanical properties

Flexible electrospun PET/TiO₂ nanofibrous structures: Morphology, thermal and mechanical properties