Recent Progress in Coaxial Electrospinning: New Parameters, Various Structures, and Wide Applications

Abstract

Electrospinning, a common method for synthesizing 1D nanostructures, has contributed to developments in the electrical, electrochemical, biomedical, and environmental fields. Recently, a coaxial electrospinning process has been used to fabricate new nanostructures with advanced performance, but intricate and delicate process conditions hinder reproducibility and mass production. Herein, recent progress in new emerging parameters for successful coaxial electrospinning, and the various nanostructures and critical application areas resulting from these activities. Relationships between the new parameters and final product characteristics are described, new possibilities for nanostructures achievable via coaxial electrospinning are identified, and new research directions with a view to future applications are suggested.

Interface design for high energy density polymer nanocomposites

“…95 Coaxial electrospinning is a method recently employed; firstly, a homogeneous precursor solution with a designed molar ratio of the raw target nanofibers was prepared by a solution method. [207][208][209][210] Secondly, the viscosity of the solution is modulated using polymers, such as poly(vinyl pyrrolidone). Thirdly, the solution is transferred to the syringe of the electrospinning instrument and an appropriate electric field is applied.…”

Synthesis of Hollow Nanofibers and Application on Detecting SF6 Decomposing Products

“…The coaxial electrospinning technology follows the traditional electrospinning principal, just replaces the traditional single spinneret with a spinneret composed of two coaxial capillaries. Compared with single spinneret electrospinning which can only produce hollow nanofibers of a limited kind of material, the advantages of coaxial electrospinning is that a diverse range of materials can be made into hollow nanofibers (Yoon et al, 2018). Hyun et al utilized the coaxial electrospinning technology to prepare solid, hollow, multi-channel, and hollow multi-channel nanofibers by adjusting the shell-core spinning solution and combining the post-heat treatment process (Hyun et al, 2016).…”

Electrospun Environment Remediation Nanofibers Using Unspinnable Liquids as the Sheath Fluids: A Review

“…Apparently, the involvement of unspinnable sheath fluid can greatly promote the capability of creating complex nanostructures for functional applications. This is because the spinnable filament-forming polymers are very limited, slightly over 100 kinds by estimation [27], but the un-spinnable liquids are numerous. Thus, the modified coaxial electrospinning provides those materials without filament-forming properties the previous opportunity to taking advantage of the large surface, high porosity and 3D web structure of electrospun nanofiber mats to exert their functional performances.…”