Temperature Controlled Chamber

The temperature-controlled chamber ensures that the environmental conditions are optimised and efficiently controlled to ensure high quality of nanofibers/nanoparticles and allows a fine tuning of the process to meet the required specifications and maintain a reproducibility, stability and reliability of the deposited product.

The main advantages of the Inovenso’s designed temperature-controlled chamber are:

  1. Increasing the process efficiency and avoiding production interruption caused mainly by clogging (caused by low boiling solvent). 
  2. Higher quality of samples and stability of reproducibility. 
  3. process scalability for a large production rate.
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Importance of Temperature-controlled chamber:

Phase separation: the temperature control is important in the case of polymer blend are used to control the phase separation during the process of deposition for an enhanced quality of the fibers/Particles uniformity.

Solvent evaporation rate: adjusting a suitable temperature on the used solvent influence directly its evaporation rate from the deposited fiber/nanoparticle and lead to a stable jet and uniform morphology, uncontrolled evaporation led to discontinuation or an incomplete fiber/particle deposition during the process of electrospinning/electrospraying.

Process stability: The fluctuation of the temperature during the process of electrospinning/electrospraying reduces the stability and continuous producibility of the deposited product with high occurrences of defects and inconsistencies.

Nanofibers/nanoparticles morphology: adjusting a suitable temperature is directly correlated with the diameter of the produced nanofiber/nanoparticle, for instance, adjusting an optimal temperature lead to a formation of thinner nanofibers and smaller nanoparticles with higher surface stability.

More Information About temperature controlled chamber in electrospinning from Literature

The major challenge in the electrospinning/electrospraying is the parameter’s control and safety features due to the use of toxic solvents and environmental controls for a stable fibers and particles production. One of the main parameters impacting the quality of the process is the temperature (T) in the deposition chamber.

A proper control of the temperature during the nanofibers and nanoparticles formation is very crucial in the solvent evaporation rate and affects the general stability of Taylor cones and homogeneous structure of the deposited fiber. Uncontrolled ambient parameters affect the morphological and mechanical properties of electrospun nanofibers and electrosprayed nanoparticles, however with the controlled chamber, an accurate temperature is maintained to assure the continuous and stable production [1] .

The chamber designed by Inovenso Ltd  is assisting researchers and users by providing higher process stability (with a heating of spinning area up to 40°C) due to homogeneous charge dissipation which minimises structure variations  and prevent also the apparition and formation of defects in electrospinning such as beading, bundles, bonding (fiber to fiber) or a combination of defects in the same sample, a lack of uniformity in the nanofibers/nanoparticles and agglomeration can be observed during the electrospraying process if the temperature is not well controlled. Defect free structures lead to a high performance and reproducible nanostructures efficiently converged into the aimed application.[2]

[1] Jan Pelipenko, Julijana Kristl, Biljana Janković, Saša Baumgartner, Petra Kocbek, The impact of relative humidity during electrospinning on the morphology and mechanical properties of nanofibers, International Journal of Pharmaceutics, Volume 456, Issue 1, 2013,Pages 125-134, ISSN 0378-5173, https://doi.org/10.1016/j.ijpharm.2013.07.078

[2] Kuzminykh, Y., Dabirian, A., Reinke, M., & Hoffmann, P. (2013). High vacuum chemical vapour deposition of oxides:: A review of technique development and precursor selection. Surface and coatings technology, 230, 13-21.