Views: 1 Author: Site Editor Publish Time: 2023-09-28 Origin: Site
Hexamethyldisiloxane (HMDSO)-doped Polyacrylonitrile (PAN) fibers have been proven to be an effective solution for enhancing the electrospinnability and thermal stability of the fibers. Electrospinning is a method that involves the use of a high voltage electric field to spin fibers from a polymer solution or melt. It has been widely applied in various fields such as tissue engineering, energy storage, and filtration due to its ability to produce fibers with nanoscale diameter.
However, the electrospinnability of some polymers, such as PAN, is limited due to their high viscosity and low conductivity. This can result in clogging of the spinneret and inconsistent fiber morphology. Therefore, the addition of HMDSO, a low molecular weight organosilicon compound, to PAN has been found to improve the fiber spinning properties.
The introduction of HMDSO into the PAN solution results in lower solution viscosity and surface tension, which allows for a smoother and more stable jet formation during the electrospinning process. Additionally, HMDSO molecules act as a plasticizer, allowing the PAN polymer chains to be more easily oriented and elongated during the stretching process. This results in more uniform fiber morphology and improved mechanical properties.
Furthermore, HMDSO-doped PAN fibers exhibit significantly improved thermal stability. The thermal stability of a fiber is crucial for its application in high-temperature environments. The introduction of HMDSO in PAN fibers results in the formation of a stable protective layer on the surface, which significantly reduces thermal degradation, even at high temperatures.
In conclusion, the use of HMDSO-doped PAN fibers has shown to be a promising solution for enhancing the electrospinnability and thermal stability of the fibers. This technology has great potential for various applications, including advanced filtration, tissue engineering, and energy storage.
