Electrospinning of ternary composite of PMMA-PEG-SiO2 nanoparticles: Comprehensive process optimization and electrospun properties

Jafarpour, Mohammad; Aghdam, Araz Sheibani; Koşar, Ali; Cebeci, Fevzi Çakmak; Ghorbani, Morteza

doi:10.1016/j.mtcomm.2021.102865

Cited by 11 publications

(10 citation statements)

References 52 publications

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“…It was reported in the literature that electrospun poly(methyl methacrylate) (PMMA) nanofibers have a high WCA and low water uptake . Our recent study confirmed that the WCA of electrospun PMMA nanofibers is about 124°, and the water droplets on the surface of the nanofiber are stable and do not penetrate into its structure . However, PMMA thin films and nonfibrous structures have been recognized as hydrophilic polymers with the WCA of 60–70° .…”

Section: Introductionsupporting

confidence: 80%

“…The air and water permeability of the membrane is greatly affected by the membrane’s hydrophobicity and hydrophilicity. Blending hydrophilic polymers such as poly(ethylene glycol) (PEG) with PMMA has been shown to significantly affect the hydrophobicity and swelling of electrospun nanofibers. , Also, their physical properties, permeability, and surface roughness can be tailored to achieve the desired properties such as nanofiber diameter by optimizing the electrospinning parameters such as the accelerating voltage, spinneret to target distance, and humidity. Increasing the surface roughness on functionalized hydrophobic surfaces increases the projected surface area for mounting hydrophobic functional groups, which increases the stability of air packets within the porosities .…”

Section: Introductionmentioning

confidence: 99%

“… 23 Our recent study confirmed that the WCA of electrospun PMMA nanofibers is about 124°, and the water droplets on the surface of the nanofiber are stable and do not penetrate into its structure. 24 However, PMMA thin films and nonfibrous structures have been recognized as hydrophilic polymers with the WCA of 60–70°. 25 The difference between the WCA of nanofiber and the thin film of PMMA can be attributed to the surface roughness and porosity.…”

Section: Introductionmentioning

confidence: 99%

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New Nanofiber Composition for Multiscale Bubble Capture and Separation

et al. 2022

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Bubble dynamics inside a liquid medium and its interactions with hydrophobic and hydrophilic surfaces are crucial for many industrial processes. Electrospinning of polymers has emerged as a promising fabrication technique capable of producing a wide variety of hydrophobic and hydrophilic polymer nanofibers and membranes at a low cost. Thus, knowledge about the bubble interactions on electrospun hydrophobic and hydrophilic nanofibers can be utilized for capturing; separating; and transporting macro-, micro-, and nanobubbles. In this study, poly(methyl methacrylate) (PMMA) and PMMA–poly(ethylene glycol) (PEG) electrospun nanofibers were fabricated to investigate gas bubble interactions with submerged nanofiber mats. To improve their durability, the nanofibers were reinforced with a plastic mesh. The ultimate tensile strengths of PMMA and PMMA-30%PEG nanofibers were measured as 0.35 and 0.30 MPa, respectively. With the use of reinforcement mesh, the mechanical properties of final membranes could be improved by a factor of 70. The gas permeability of the electrospun and reinforced nanofibers was also studied using the high-speed visualization technique and a homemade setup to investigate the effect of electrospun nanofibers on the bubble coalescence and size in addition to the frequency of released bubbles from the nanofiber mat. The diffusion rate of air bubbles in hydrophobic PMMA electrospun nanofibers was measured as 10 L/s for each square meter of the nanofiber. However, the PMMA-30%PEG mat was able to restrict the diffusion of gas bubbles through its pores owing to the van der Waals force between the water molecules and nanofiber surface as well as the high stability of the thin water layer. It has been shown that the hydrophobic electrospun nanofibers can capture and coalesce the rising gas bubbles and release them with predictable size and frequency. Consequently, the diameter of bubbles introduced to the hydrophobic PMMA membrane ranged between 2 and 25 mm, whereas the diameter of bubbles released from the hydrophobic electrospun nanofibers was measured as 8 ± 1 mm. The proposed mechanism and fabricated electrospun nanofibers can enhance the efficiency of various systems such as heat exchangers, liquid–gas separation filters, and direct air capture (DAC) systems.

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Section: Introductionsupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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New Nanofiber Composition for Multiscale Bubble Capture and Separation

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“…For PEG, the characteristic peaks at 2884 cm –1 indicated the asymmetric bending vibration of methylene groups (-CH 2 ) [ 46 ]. In addition, the characteristic absorption bands at 946 and 841 cm –1 were related to the asymmetric stretching vibration of ether groups (-C-O-) [ 44 , 47 ]. Although characteristic peaks of PEG did not appear in the spectrum of F2 and F3 fibres, a higher PEG content in F4 fibres showed clear characteristic peaks at 2876 cm –1 in the FTIR spectrum.…”

Section: Resultsmentioning

confidence: 99%

Elaborate design of shell component for manipulating the sustained release behavior from core–shell nanofibres

et al. 2022

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Background The diversified combination of nanostructure and material has received considerable attention from researchers to exploit advanced functional materials. In drug delivery systems, the hydrophilicity and sustained–release drug properties are in opposition. Thus, difficulties remain in the simultaneous improve sustained–release drug properties and increase the hydrophilicity of materials. Methods In this work, we proposed a modified triaxial electrospinning strategy to fabricate functional core–shell fibres, which could elaborate design of shell component for manipulating the sustained-release drug. Cellulose acetate (CA) was designed as the main polymeric matrix, whereas polyethylene glycol (PEG) was added as a hydrophilic material in the middle layer. Cur, as a model drug, was stored in the inner layer. Results Scanning electron microscopy (SEM) results and transmission electron microscopy (TEM) demonstrated that the cylindrical F2–F4 fibres had a clear core–shell structure. The model drug Cur in fibres was verified in an amorphous form during the X-ray diffraction (XRD) patterns, and Fourier transformed infrared spectroscopy (FTIR) results indicated good compatibility with the CA matrix. The water contact angle test showed that functional F2–F4 fibres had a high hydrophilic property in 120 s and the control sample F1 needed over 0.5 h to obtain hydrophilic property. In the initial stage of moisture intrusion into fibres, the quickly dissolved PEG component guided the water molecules and rapidly eroded the internal structure of functional fibres. The good hydrophilicity of F2–F4 fibres brought relatively excellent swelling rate around 4600%. Blank outer layer of functional F2 fibres with 1% PEG created an exciting opportunity for providing a 96 h sustained-release drug profile, while F3 and F4 fibres with over 3% PEG provided a 12 h modified drug release profile to eliminate tailing–off effect. Conclusion Here, the functional F2–F4 fibres had been successfully produced by using the advanced modified triaxial electrospinning nanotechnology with different polymer matrices. The simple strategy in this work has remarkable potential to manipulate hydrophilicity and sustained release of drug carriers, meantime it can also enrich the preparation approaches of functional nanomaterials. Graphical Abstract

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“…For PEG, the characteristic peaks at 2884 cm − 1 indicated the asymmetric bending vibration of methylene groups (-CH 2 ) [43]. In addition, the characteristic absorption bands at 946 and 841 cm − 1 were related to the asymmetric stretching vibration of ether groups (-C-O-) [41,44]. Although characteristic peaks of PEG did not appear in the spectrum of F2 and F3 bres, a higher PEG content in F4 bres showed clear characteristic peaks at 2876 cm − 1 in the FTIR spectrum.…”

Section: Xrd and Ftirmentioning

confidence: 99%

Elaborate design of shell component for manipulating the sustained release behavior from core–shell nanofibres

Liu

Chen

Gao

et al. 2022

Preprint

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Background: The diversified combination of nanostructure and material has received considerable attention from researchers to exploit advanced functional materials. In drug delivery systems, the hydrophilicity and sustained–release drug properties are in opposition. Thus, difficulties remain in the simultaneous improve sustained–release drug properties and increase the hydrophilicity of materials.Methods: In this work, we proposed a modified triaxial electrospinning strategy to fabricate functional core–shell fibres, which could elaborate design of shell component for manipulating the sustained-release drug. Cellulose acetate (CA) was designed as the main polymeric matrix, whereas polyethylene glycol (PEG) was added as a hydrophilic material in the middle layer. Cur, as a model drug, was stored in the inner layer.Results: Scanning electron microscopy (SEM) results and transmission electron microscopy (TEM) demonstrated that the cylindrical F2–F4 fibres had a clear core–shell structure. The model drug Cur in fibres was verified in an amorphous form during the X-ray diffraction (XRD) patterns, and Fourier transformed infrared spectroscopy (FTIR) results indicated good compatibility with the CA matrix. The water contact angle test showed that functional F2–F4 fibres had a high hydrophilic property in 120 s and the control sample F1 needed over 0.5 h to obtain hydrophilic property. In the initial stage of moisture intrusion into fibres, the quickly dissolved PEG component guided the water molecules and rapidly eroded the internal structure of functional fibres. The good hydrophilicity of F2–F4 fibres brought relatively excellent swelling rate around 4600%. Blank outer layer of functional F2 fibres with 1% PEG created an exciting opportunity for providing a 96 h sustained-release drug profile, while F3 and F4 fibres with over 3% PEG provided a 12 h modified drug release profile to eliminate tailing–off effect.Conclusion: Here, the functional F2–F4 fibres had been successfully produced by using the advanced modified triaxial electrospinning nanotechnology with different polymer matrices. The simple strategy in this work has remarkable potential to manipulate hydrophilicity and sustained release of drug carriers, meantime it can also enrich the preparation approaches of functional nanomaterials.

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Electrospinning of ternary composite of PMMA-PEG-SiO2 nanoparticles: Comprehensive process optimization and electrospun properties

Cited by 11 publications

References 52 publications

New Nanofiber Composition for Multiscale Bubble Capture and Separation

New Nanofiber Composition for Multiscale Bubble Capture and Separation

Elaborate design of shell component for manipulating the sustained release behavior from core–shell nanofibres

Elaborate design of shell component for manipulating the sustained release behavior from core–shell nanofibres

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