Water-insoluble polymer-free uniform nanofibers of peracetylated cyclodextrin by electrospinning

Topuz, Fuat; Shaikh, Ashif Y.; Güler, Mustafa O.; Uyar, Tamer

doi:10.1007/s10853-020-04820-2

Cited by 10 publications

(3 citation statements)

References 39 publications

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“…Viscous rope coiling set the relevance of the internal frictional force of solutions (viscosity) for stable jet formation, which narrows the solution properties for EHD processing, but also opens the possibility of aqueous processing beyond polymeric systems. [72,73] Several studies report the EHD processing of non-polymer systems, however, polymers are needed to improve jet stability. [74][75][76] In 2014, Huang et al studied the control of dimension and deposition of EHD structures by varying environmental conditions (Figure 3a).…”

Section: Parametric Controlmentioning

confidence: 99%

Electrohydrodynamic 3D Printing of Aqueous Solutions

Reizabal

Tandon

Lanceros‐Méndez

et al. 2022

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flow rate, nozzle diameter, and collector distance), as well as physicochemical properties of the fluid, induce different EHD effects, each one unique in terms of potential, limitations, and applicability. [7] A schematic showing selected examples of EHD techniques, and a summary grouping their general parameters are provided in Figure 1 and Table 1, respectively.By taking advantage of Rayleigh-Plateau instabilities, electrospraying and drop-on-demand EHD approaches allow particle generation, generally using lowconcentration polymer solutions. Electrospraying allows significant material volume processing but offers limited control in terms of size, shape, and particle placement accuracy (Figure 1a). [26] Drop-on-demand, in contrast, deals with smaller volumes but increases the control over the processed particle and printing resolution (Figure 1b). [27] As described by Taylor in 1969, by preventing Rayleigh-Plateau instabilities through the increase of fluid molecular entanglements, it is possible to achieve a continuous jet. [28,29] In electrospinning, small diameter fibers are achieved by taking advantage of bending or "whipping" instabilities, induced by large surface charge density. The non-woven mats obtained using electrospinning have been of great interest for nanotechnology research, however, accurate fiber deposition is challenging (Figure 1c). [29] In EHD writing (electrowriting [EW]), lower voltages prevent these whipping instabilities, and the EHD phenomenon results in the sustaining of a fluid jet at low flow rates, allowing for accurate control over fiber dimension and deposition (Figure 1e). [28] The control of material placement is a crucial feature for additive manufacturing since this permits the precise deposition of fibers forming 2D layers, which can be repeated to produce highly complex highresolution 3D structures. This becomes even more crucial for biomedicine where a key goal is to mimic the biological environment of native tissue to support and guide cellular growth or understand tissue regeneration mechanisms. [30,31] The use of jet-deflecting auxiliary electrodes allows the control of bending or "whipping" instabilities to achieve the accurate patterning of nanofibers, providing an intermediate approach between electrospinning and EW [32] (Figure 1d).EHD techniques have primarily focused on processing polymeric materials, although metals and ceramics have also been explored. [33,34] Polymeric melts provide a low-toxicity alternative avoiding the use of hazardous solvents, decreasing the material consumption, and reducing processing variables (e.g., evaporation), but have a limited selection of available materials. [35] Solution-based EHD processing can process a wider range of materials, however, commonly used organic solvents are often Among the various electrohydrodynamic (EHD) processing techniques, electrowriting (EW) produces the most complex 3D structures. Aqueous solution EW similarly retains the potential for additive manufacturing well-resolved 3D structures, while providing n...

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Section: Parametric Controlmentioning

confidence: 99%

Electrohydrodynamic 3D Printing of Aqueous Solutions

Reizabal

Tandon

Lanceros‐Méndez

et al. 2022

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“…[ 81 ] For cyclodextrin polymer nanofibers, if the flow rate is increased from 0.1 to 2 mL hr −1 , the mean diameter increases considerably from 610 to 1860 nm. [ 82 ]…”

Section: Effective Parameters For Electrospinningmentioning

confidence: 99%

“…When the distance increases from 10 to 25 cm, the average diameter of cyclodextrin nanofibers does not change significantly (decrease from 1070 to 1050 nm), and the morphology remains bead‐free and smooth. [ 82 ] The fiber diameter remains relatively unchanged with distance at all weight ratios of whey protein isolate and pullulan. [ 79 ]…”

Section: Effective Parameters For Electrospinningmentioning

confidence: 99%

Desired properties and corresponding improvement measures of electrospun nanofibers for membrane distillation, reinforcement, and self‐healing applications

Xia

Peng

et al. 2021

Polymer Engineering & Sci

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Electrospun nanofibers have promising properties and serve an important role in various applications ranging from biomedical engineering to mechanical engineering. Although electrospun nanofibers are not used worldwide, the limited research conducted thus far provides a rudimentary understanding of nanofibers and explores the potential areas that have attracted attention for commercialization. However, the lack of a comprehensive understanding of the properties of nanofibers in various applications severely limits their functionality. This review provides clear insights into modifying the morphology of nanofibers by adjusting various parameters to meet specific application requirements. Various applications, including membrane distillation, reinforcement, and self‐healing, and the corresponding desired properties are discussed in detail. Approaches for enhancing the application‐specific properties of electrospun nanofibers are also discussed. This discussion provides significant guidance for the design of novel electrospun composites with excellent properties. Finally, the challenges in research and the opportunities for future development are presented.

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