Online fabrication of ultralight, three-dimensional, and structurally stable ultrafine fibre assemblies with a double-porous feature

Chen, Xin; Xu, Yang; Zhang, Wenxin; Xu, Kangli; Ke, Qinfei; Jin, Xiangyu; Huang, Chen

doi:10.1039/c9nr01477b

Cited by 33 publications

(24 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5(C,D)). This observation is in agreement with recent literature 42,43 . At polymer concentrations ≤15 wt%, a larger volume fraction of solvent has to evaporate first before the fiber can solidify which in turn increases the drying time.…”

Section: Resultssupporting

confidence: 94%

“…The production of porous or micro-/nanofibers is of high interest for reducing their weight and increasing their surface to volume ratio. For example, such porous or grooved fibers can be obtained by electrospinning and controlling the polymer/solvent/anti-solvent interaction 42,43 . The underlying mechanism of such processes relies on the formation of pores upon the evaporation from the polymer-poor phase and solidification of the polymer-rich phase, which is also reflected by the phase diagrams of such ternary phases 42,43 .…”

Section: Resultsmentioning

confidence: 99%

“…For example, such porous or grooved fibers can be obtained by electrospinning and controlling the polymer/solvent/anti-solvent interaction 42,43 . The underlying mechanism of such processes relies on the formation of pores upon the evaporation from the polymer-poor phase and solidification of the polymer-rich phase, which is also reflected by the phase diagrams of such ternary phases 42,43 . To investigate the inner structure of the here-produced fibers, focused ion beam (FIB) 44 cuts were performed and revealed that the polymer concentration has indeed an impact on the fibers’ internal porosity.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Solution blow spinning of polymer/nanocomposite micro-/nanofibers with tunable diameters and morphologies using a gas dynamic virtual nozzle

Vasireddi¹,

Kruse

Vakili³

et al. 2019

Sci Rep

View full text Add to dashboard Cite

Uniform endless fibers are ubiquitous and their applications range from functional textiles over biomedical engineering to high-performance filtering and drug delivery systems. Here, we report a new method for the direct, reproducible fabrication of uniform polymer and composite micro-/nanofibers using a microfluidic gas flow focusing nozzle (Gas Dynamic Virtual Nozzle (GDVN)) relinquishing the need for external fiber pulling mechanisms. Compared to other methods, this technique is inexpensive, user-friendly and permits precise fiber diameter control (~250 nm to ~15 µm), high production rate (m/s-range) and direct fiber deposition without clogging due to stable, gas-focused jetting. Control over shape (flat or round) and surface patterning are achieved by simply tuning the air pressure and polymer concentration. The main thinning process happens after the polymer exits the device and is, therefore, mostly independent of the nozzle’s internal geometry. Nevertheless, the lithography-based device design is versatile, allowing for precise flow-field control for operation stability as well as particle alignment control. As an example, we demonstrate the successful production of endless hematite nanocomposite fibers which highlights this technology’s exciting possibilities that can lead to the fabrication of multifunctional/stimuli-responsive fibers with thermal and electrical conductivity, magnetic properties and enhanced mechanical stability.

show abstract

Section: Resultssupporting

confidence: 94%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Solution blow spinning of polymer/nanocomposite micro-/nanofibers with tunable diameters and morphologies using a gas dynamic virtual nozzle

Vasireddi¹,

Kruse

Vakili³

et al. 2019

Sci Rep

View full text Add to dashboard Cite

show abstract

“…The initial composition of PSU, DMF, and H 2 O in the jets is represented by a triangle, and the phase separation paths of the jets under different RHs are indicated by arrows of different colors. When the jets were ejected from the spinneret, the higher RH accelerated the double diffusion between DMF and H 2 O, and thereby the jets quickly entered the phase separation zone, leading to a steeper path in the phase diagram, [ 31,32 ] which could be indirectly proved by the time for the spinning solution to become cloudy under different RHs, as shown in Figure S1, Supporting Information; the transparent spinning solution became cloudy quickly under high RH. Subsequently, the jets entering the phase separation zone underwent rapid phase separation and solidifying to form PSU fibers before reaching the substrate, and the mutual repulsion between the solidified fibers resulted in fluffy fiber assemblies on the receiving substrate.…”

Section: Resultsmentioning

confidence: 99%

Interlocked Dual‐Network and Superelastic Electrospun Fibrous Sponges for Efficient Low‐Frequency Noise Absorption

Zong

Cao

et al. 2020

Small Structures

View full text Add to dashboard Cite

Traffic noise is a major source of urban noise pollution, with severe threats to the physiological and psychological health of humans. Fibrous sound absorption materials are extensively applied in the control of traffic noise pollution; however, the larger fiber diameters and monotonous internal structure of such materials result in poor low‐frequency sound‐absorbing properties or unsatisfied mechanical properties. Herein, a biomimetic and robust strategy to design ultrastrong and superelastic fibrous sound absorption sponges is reported, which is achieved by integrating a one‐step forming technique of interlocked micro/nano dual fiber networks and an in situ crosslinking approach. The obtained vine‐like interlocked structured fibrous sponges can withstand a tensile force 10 000 times their weight without deformation. Furthermore, the materials also show outstanding compression fatigue resistance and a lightweight feature (8.70 mg cm−3). Most importantly, the interlocked dual‐network‐induced stable fluffy‐stacked structure endows the fibrous sponges with an enhanced low‐frequency sound‐absorbing property (absorption coefficient of 0.93 at 1000 Hz), which is superior to those of commercial and reported sound absorption materials. In addition, the materials also possess good hydrophobicity and temperature resistance. This work opens new pathways for the further development of highly efficient sound‐absorbing materials.

show abstract

“…For instance, in the process of purifying dye waste water and separating oil–water, the compact pores formed between coplanar two adjacent fibers provide 2D structure with comparatively small specific surface area and pore size, which limit the attachment and penetration of dye as well as oil–water. [ 12–14 ] Therefore, many efforts have been made to fabricate 3D electrospun fibrous materials with fluffy structure. [ 15,16 ]…”

Section: Introductionmentioning

confidence: 99%

Robust Candy‐Floss‐Like Poly(l‐lactide) Fibrous Filters Driven by Sodium‐Dodecyl‐Benzene‐Sulfonate for High Efficient Dye/Oil Separation

Xing

et al. 2020

Macro Materials & Eng

Self Cite

View full text Add to dashboard Cite

3D and robust Poly(l-lactide) (PLLA) fibrous materials has been fabricated via electrospinning and evaporation welding for high-efficiency dye adsorption and oil/water separation simultaneously. Herein, sodium dodecyl benzene sulfonate (SDBS) in spinning solution has been found to stimulate fibrous materials forming 3D candy-floss-like structure with high porosity and surface area. Also, SDBS doped on fibers surface facilitates dye adsorption and oil separation of the fibrous materials in effluent. Environmentally friendly SDBSdriven 3D electrospun PLLA fibrous materials have high porosity (99.91%) and stable big pore size (7.39 µm), showing high adsorption capacity of 581.78 mg g −1 toward methylene blue (MB) and 14.67 times improved oil/ water separation efficiency compared to traditional 2D PLLA fibrous materials. Moreover, the concept of SDBS stimulated 3D nanofibrous materials can be readily extended to other polymers, paving a new way to fabricate high-efficient dye adsorption and oil/water separation 3D fibrous filters for industrial waste water remediation.

show abstract

Online fabrication of ultralight, three-dimensional, and structurally stable ultrafine fibre assemblies with a double-porous feature

Abstract: Three-dimensional, ultralight fibre assemblies are constructed via a double-porous structure containing both macropores and nanopores.

Cited by 33 publications

References 51 publications

Solution blow spinning of polymer/nanocomposite micro-/nanofibers with tunable diameters and morphologies using a gas dynamic virtual nozzle

Solution blow spinning of polymer/nanocomposite micro-/nanofibers with tunable diameters and morphologies using a gas dynamic virtual nozzle

Interlocked Dual‐Network and Superelastic Electrospun Fibrous Sponges for Efficient Low‐Frequency Noise Absorption

Robust Candy‐Floss‐Like Poly(l‐lactide) Fibrous Filters Driven by Sodium‐Dodecyl‐Benzene‐Sulfonate for High Efficient Dye/Oil Separation

Contact Info

Product

Resources

About