Electrospinning through the prism of time

Shepa, Ivan; Múdra, Erika; Dusza, Ján

doi:10.1016/j.mtchem.2021.100543

Cited by 40 publications

(44 citation statements)

References 288 publications

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“…The pristine PHB fibers demonstrate the large concentration of ellipsoid structures as the anomalous bead-like fragments existing in the fibrous mats along with conventional cylindrical form being typical for electrospun fibers, see Figure 2 A. As it was stated in the literature and a series of our works [ 39 , 40 , 41 , 42 ], the reason for the ellipsoids’ formation is low electrical conductivity (<1 μS/cm) and low surface tension of ES polymer solutions. The size of the ellipsoid beads in the transverse direction is 7.5 ± 2.5 µm, and in the longitudinal direction is ~17 ± 7 µm.…”

Section: Resultssupporting

confidence: 55%

Evaluation and Characterization of Ultrathin Poly(3-hydroxybutyrate) Fibers Loaded with Tetraphenylporphyrin and Its Complexes with Fe(III) and Sn(IV)

et al. 2022

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The effect of small additions (1–5 wt.%) of tetraphenylporphyrin (TPP) and its complexes with Fe (III) and Sn (IV) on the structure and properties of ultrathin fibers based on poly (3-hydroxybutyrate) (PHB) has been studied. A comprehensive study of biopolymer compositions included X-ray diffraction (XRD), differential scanning calorimetry (DSC), spin probe electron paramagnetic resonance method (EPR), and scanning electron microscopy (SEM). It was demonstrated that the addition of these dopants to the PHB fibers modifies their morphology, crystallinity and segmental dynamics in the amorphous regions. The annealing at 140 °C affects crystallinity and molecular mobility in the amorphous regions of the fibers, however the observed changes exhibit multidirectional behavior, depending on the type of porphyrin and its concentration in the fiber. Fibers exposure to an aqueous medium at 70 °C causes a nonlinear change in the enthalpy of melting and challenging nature of a change of the molecular dynamics.

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Section: Resultssupporting

confidence: 55%

Evaluation and Characterization of Ultrathin Poly(3-hydroxybutyrate) Fibers Loaded with Tetraphenylporphyrin and Its Complexes with Fe(III) and Sn(IV)

et al. 2022

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“…[4][5][6][7][8][9][10] Finally, a nanofiber mat with a very large surface area per weight is formed on the surface of the collector, which can be used in several research fields such as biotissue engineering, composite materials, and sensors. [11][12][13][14][15][16][17][18][19] To date, nanofibers have been used to prepare DDSs. 20,21 However, fabricating DDSs with electrospun nanofibers using a single concentric nozzle is challenging because target drugs are released in large quantities at the initial stage of drug delivery.…”

Section: Introductionmentioning

confidence: 99%

“…In these devices, the polymer solution is extruded into an electric field that is subjected to a high voltage, forming nano‐ (nm) and micro‐sized (μm) fibers 4–10 . Finally, a nanofiber mat with a very large surface area per weight is formed on the surface of the collector, which can be used in several research fields such as biotissue engineering, composite materials, and sensors 11–19 …”

Section: Introductionmentioning

confidence: 99%

Controlled release of curcumin from coaxial electrospun nanofiber mats

Kim

Bae

Shin

2022

Bulletin Korean Chem Soc

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In this study, a controlled drug delivery system (DDS) was developed by coaxial electrospinning. Fabricate a controlled DDS using electrospun nanofibers formed with a single concentric nozzle is challenging because of the rapid initial release rate. Therefore, in this study, electrospinning was conducted using dual or triple concentric nozzles to fabricate controlled DDSs. Polycaprolactone and poly(ethylene oxide) were used as the shell and core polymeric materials, respectively, and curcumin was used as the model drug. The spinning feed rate was controlled, and dual and triple concentric nozzles were used to manipulate the shell thickness of the nanofiber. Increasing the shell thickness significantly lowered the release rate. The triple concentric nozzle was effective to obtain a slower release rate than dual concentric nozzle. The coaxial electrospun nanofibers were characterized using optical microscopy and infrared spectroscopy.

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“…However, the above methods remain a lot of limitations to totally solve the problem of filler dispersion 9 . Simultaneously, the mentioned methods inevitably apply organic solvents to improve compatibility of polymerization system 10 . It countered to the development requirements of economic and environmental protection.…”

Section: Introductionmentioning

confidence: 99%

“…9 Simultaneously, the mentioned methods inevitably apply organic solvents to improve compatibility of polymerization system. 10 It countered to the development requirements of economic and environmental protection.…”

mentioning

confidence: 99%

Effect of melting temperatures on the orientation and rheology of polyacrylate/silica (PAcr/SiO₂) composite microspheres in twin‐screw extruder

Cui

Zhang

Zhu

et al. 2022

J of Applied Polymer Sci

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The dispersion and orientation arrangement of functional polymers with fillers are critical to their performance. However, there are rare detailed researches on the visualization of the orientation process about functional fillers in composite melts and the mechanistic effects on performance. In this work, it explored the change process of the orientation morphology for polyacrylate/silica (PAcr/SiO2) composite microspheres in polymethyl methacrylate (PMMA) at different melting temperatures. Afterwards, the morphology and distribution of oriented microfibers in composite fibers melted at different temperatures were observed by transmission electron microscope (TEM). The results showed that composite microfibers could be formed in tight arrangement and obtained average orientation of 50.88 in the composite fibers at 250°C. Under this circumstance, the addition of nano SiO2 particles had no effect on the rheological type. Meanwhile, the shear stress was 99.29% higher than that of pure PMMA system under the same conditions. As for the elongation at break, it was found that the elongation at break of the composite fiber prepared at 250°C was 169.43% higher than that of pure PMMA. Therefore, it provided a new method to achieve well dispersion of functional fillers in molten systems. Furthermore, it was beneficial to enhance the elongation at break of functional composites.

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Electrospinning through the prism of time

Cited by 40 publications

References 288 publications

Evaluation and Characterization of Ultrathin Poly(3-hydroxybutyrate) Fibers Loaded with Tetraphenylporphyrin and Its Complexes with Fe(III) and Sn(IV)

Evaluation and Characterization of Ultrathin Poly(3-hydroxybutyrate) Fibers Loaded with Tetraphenylporphyrin and Its Complexes with Fe(III) and Sn(IV)

Controlled release of curcumin from coaxial electrospun nanofiber mats

Effect of melting temperatures on the orientation and rheology of polyacrylate/silica (PAcr/SiO₂) composite microspheres in twin‐screw extruder

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Electrospinning through the prism of time

Cited by 40 publications

References 288 publications

Evaluation and Characterization of Ultrathin Poly(3-hydroxybutyrate) Fibers Loaded with Tetraphenylporphyrin and Its Complexes with Fe(III) and Sn(IV)

Evaluation and Characterization of Ultrathin Poly(3-hydroxybutyrate) Fibers Loaded with Tetraphenylporphyrin and Its Complexes with Fe(III) and Sn(IV)

Controlled release of curcumin from coaxial electrospun nanofiber mats

Effect of melting temperatures on the orientation and rheology of polyacrylate/silica (PAcr/SiO2) composite microspheres in twin‐screw extruder

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Product

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Effect of melting temperatures on the orientation and rheology of polyacrylate/silica (PAcr/SiO₂) composite microspheres in twin‐screw extruder