Effect of different solvent systems on PHBV/PEO electrospun fibers

Xu, Yongjian; Zou, Liming; Lu, Hongwei; Kang, Tingjie

doi:10.1039/c6ra26783a

Cited by 55 publications

(49 citation statements)

References 48 publications

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“…The chosen conditions were based on trials that yielded nanosized structures. The characteristic fundamental vibrational modes and wave numbers exhibited for these samples collected from the FTIR experimental spectra ( Figure 2) are listed (Table 3) and are in agreement with data reported in the literature [49][50][51][52][53][54]. Colloids Interfaces 2020, 4, x FOR PEER REVIEW 9 of 16 FTIR bands ranging from weak to medium intensities found in the spectra region 400 to 4000 cm −1 for both evaluated conditions involve the coupling of several vibrational modes of the CH2 group and the skeletal modes.…”

Section: Characterization Of Solutions and Nanostructuressupporting

confidence: 87%

Development and Characterization of Electrospun Nanostructures Using Polyethylene Oxide: Potential Means for Incorporation of Bioactive Compounds

Ramos

Giaconia

Marco

et al. 2020

Colloids and Interfaces

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The development of processes for stabilization of the properties of bioactive compounds has been studied in recent years, and the use of nanotechnology is among the most discussed routes. The present work addressed the assembly of nanostructures using polyethylene oxide (PEO), the production of core-shell nanofibers (NFs) with bioactive compounds, and the evaluation of their microscopic and physical characteristics. Aqueous solutions of PEO were electrospun by varying different process and solution parameters (PEO and NaCl concentrations, feeding rate, the tip-to-collector distance (TCD), and applied voltage) in order to optimize production of nanostructures. The best condition obtained was evaluated to form core-shell NFs composed by jussara pulp as a source of anthocyanins. To assess the production of NFs with PEO and jussara pulp, feed solutions were prepared in acetate buffer (pH 4.5) with 6% PEO and 10% lyophilized jussara pulp, at a feeding rate of 150 μL·h−1 and TCD of 15 cm using an applied voltage of 10 kV to form core-shell NFs. The results revealed the formation of core-shell NFs with a diameter of 126.5 ± 50.0 nm. The outcomes achieved represent a crucial step in the application of anthocyanins in food systems as pigments, establishing a basis for further research on the incorporation of nanomaterials into foodstuff.

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Section: Characterization Of Solutions and Nanostructuressupporting

confidence: 87%

Development and Characterization of Electrospun Nanostructures Using Polyethylene Oxide: Potential Means for Incorporation of Bioactive Compounds

Ramos

Giaconia

Marco

et al. 2020

Colloids and Interfaces

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“…It is known that solvent systems also have an influence on the mechanical properties of resulting electrospun fibers. [32][33][34] However, these effects are solvent and material specific. Since our results of stress-strain evaluation suggest very comparable mechanical properties as shown by similar Young's moduli of the membrane types, the effect of CHCl 3 as the main solvent component probably outweighs the effects from the small portion (10%) of the other solvents.…”

Section: Discussionmentioning

confidence: 99%

Controlling the surface structure of electrospun fibers: Effect on endothelial cells and blood coagulation

et al. 2018

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The influence of nano-or micron-sized structures on polymer films as well as the impact of fiber diameter of electrospun membranes on endothelial cell (EC) and blood response has been studied for vascular tissue engineering applications. However, the influence of surface structures on micronsized fibers on endothelial cells and blood interaction is currently not known. In this work, electrospun membranes with distinct fiber surface structures were designed to study their influence on the endothelial cell viability and thrombogenicity. The thermodynamically derived Hansen-solubilityparameters model accurately predicted the formation of solvent dependent fiber surface structured poly(caprolactone) membranes. The electrospun membranes composed of microfibers (MF) or structured MF were of similar fiber diameter, macroscopic roughness, wettability, and elastic modulus. In vitro evaluation with ECs demonstrated that cell proliferation and morphology were not affected by the fiber surface structure. Similarly, investigating the blood response to the fiber meshes showed comparable fibrin network formation and platelet activation on MF and structured MF. Even though the presented results provide evidence that surface structures on MF appear neither to affect EC viability nor blood coagulation, they shed light on the complexity and challenges when studying biology-material interactions. They thereby contribute to the understanding of EC and blood-material interaction on electrospun membranes.

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“…As previously reported, the continuous and uniform nanofiber cannot be obtained when the viscosity was extremely low [27]. Actually, the improvement of solutions conductivity would led to the increase of static charge density of the jet, and then a strong elongation forces are imposed to the polymers formed a bead-free and uniform nanofiber [27][28][29]. In general, the standard deviation of nanofiber average diameters, as well as the nanofiber morphology, indicated that the SCB-AA had a better electrospinning performance than SCB-PA and SCB-BA.…”

Section: Spinnability and Rheology Of Scb-a/pan Blends Solutionsmentioning

confidence: 91%

A Feasible Way to Produce Carbon Nanofiber by Electrospinning from Sugarcane Bagasse

et al. 2019

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Recently, the nanofiber materials derived from natural polymers instead of petroleum-based polymers by electrospinning have aroused a great deal of interests. The lignocellulosic biomass could not be electrospun into nanofiber directly due to its poor solubility. Here, sugarcane bagasse (SCB) was subjected to the homogeneous esterification with different anhydrides, and the corresponding esterified products (SCB-A) were obtained. It was found that the bead-free and uniform nanofibers were obtained via electrospinning even when the mass fraction of acetylated SCB was 70%. According to the thermogravimetric analyses, the addition of SCB-A could improve the thermal stability of the electrospun composite nanofibers. More importantly, in contrast to the pure polyacrylonitrile (PAN) based carbon nanofiber, the SCB-A based carbon nanofibers had higher electrical conductivity and the surface N element content. In addition, the superfine carbon nanofiber mats with minimum average diameter of 117.0 ± 13.7 nm derived from SCB-A were obtained, which results in a larger Brunauer–Emmett–Teller (BET) surface area than pure PAN based carbon nanofiber. These results demonstrated that the combination of the homogeneous esterification and electrospinning could be a feasible and potential way to produce the bio-based carbon nanofibers directly from lignocellulosic without component separation.

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Effect of different solvent systems on PHBV/PEO electrospun fibers

Cited by 55 publications

References 48 publications

Development and Characterization of Electrospun Nanostructures Using Polyethylene Oxide: Potential Means for Incorporation of Bioactive Compounds

Development and Characterization of Electrospun Nanostructures Using Polyethylene Oxide: Potential Means for Incorporation of Bioactive Compounds

Controlling the surface structure of electrospun fibers: Effect on endothelial cells and blood coagulation

A Feasible Way to Produce Carbon Nanofiber by Electrospinning from Sugarcane Bagasse

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