Colloidal Electrospinning Platform

Colloidal Electrospinning Platform

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Alfa Chemistry has colloidal electrospinning technology, which can be used to prepare a variety of functional fiber materials such as multi-compartment fibers, structural colored fibers, and hydrocolloids for dressings. Colloidal electrospinning technology provides process support for the production of complex composite nanofibers. Our electrospun colloids include inorganic particles such as metal oxide particles, metal nanoparticles, fluorescently labeled colloids, and polymeric particles such as multi-wall carbon nanotubes and carbon black particles.

Colloidal Electrospinning Platform

Introduction

The basic setup of colloidal electrospinning technology is similar to that of solution electrospinning, with the main components including a high-voltage power supply, a spinneret, and a conductive collector placed opposite the spinneret. The colloidal spinning solution passes through the spinneret at a certain flow rate and forms droplets under the action of surface tension. A strong electric field is applied to the droplet, causing it to form a Taylor cone. The droplets are then ejected into the collector under a driving force based on electrostatic repulsion. In order to make the spraying process continuously stable and to ensure that the fibers can be deposited on the substrate with relative precision, special control technology needs to be added.[1,2]

Scheme of a basic laboratory colloid-electrospinning setup.Fig.1 Scheme of a basic laboratory colloid-electrospinning setup.[2]


Our Services

One of Alfa Chemistry's services is customizing nanofibers using colloidal electrospinning technology. The table below shows the types of electrospun colloids we offer.

Inorganic NanoparticlesMetal nanoparticlesTi, Cu, Zn, Ag, Au, Co, etc.
Metal oxide particlesMgO, Al2O3, TiO2, Fe3O4, ZrO2, ZnO, BaTiO3, Boehmite (γ-Al(O)-OH), ITO (In2O3+SnO2), etc.
Fluorescently labeled colloidstris(8-hydroxyquinoline) aluminium(III) (alq3), boron carbon oxynitrides, sodium yttrium fluoride, CdS, CdSe, CdTe, etc.
Other mineralsMica, Zeolite, Montmorrilonite, Boron nitride, Silver acetate, CaCO3, β-tricalcium phosphate, Hydroxyapatite, Hydroxyapatite + MWNT, etc.
Polymer ParticlesCarbon black particles, multi-walled carbon nanotubes, etc.

In addition to fabricating various types of nanofibers using colloidal electrospinning technology, Alfa Chemistry also prepares a variety of electrospun nanofiber assemblies with desired properties for countless specific applications.

Schematic diagram of electrospinning setup using (a) rotating drum, (b) parallel electrode; representative simulation of electrostatic field distribution between the needle and (c) rotating drum, (d) parallel electrode using COMSOL software.Fig.2 Schematic diagram of electrospinning setup using (a) rotating drum, (b) parallel electrode; representative simulation of electrostatic field distribution between the needle and (c) rotating drum, (d) parallel electrode using COMSOL software.[1]


Our Advantages

  • Wide range of applications - Electrospinning for various types of colloidal materials
  • Technologically advanced - prepare a variety of electrospinning assemblies with desired properties for specific applications
  • High manufacturing efficiency - easy to tune the nanofibers' morphology and prepare them in rapid succession

References

  1. Jiali Yu and ChiWai Kan. Review on Fabrication of Structurally Colored Fibers by Electrospinning. Fibers. 2018.
  2. Daniel Crespy, et al. Colloid-Electrospinning: Fabrication of Multicompartment Nanofibers by the Electrospinning of Organic or/and Inorganic Dispersions and Emulsions. Macromolecular Rapid Communications. 2012.

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