A Laser-Induced Cavitation Electrospinning Device

Abstract

The invention discloses a laser-induced bubble electrostatic spinning device. The device comprises a solution storage tank used for containing a spinning solution, a collection plate arranged above the solution storage tank and used for collecting spinning jet flows, a laser device used for generating a cavitation phenomenon and forming bubbles through optical breakdown in the spinning solution in the solution storage tank, and an attractive mechanism used for achieving an attractive effect, toward the collection plate, on the spinning jet flows obtained after the bubbles are broken on the surface of the spinning solution. A wall plate of the solution storage tank is transparent, and the power of the laser device can be adjusted. According to the laser-induced bubble electrostatic spinning device, the laser generated by the laser device acts on the spinning solution, and the bubbles are generated by means of the laser-induced cavitation principle, so taht the size of the bubbles are controlled by the laser power of the laser device, accordingly the size of the bubbles can be conveniently and precisely controlled, the industrial production requirements of nano-fibers under different conditions are met, and the quality of bubble spinning fibers is improved.

Description

technical field [0001] The invention relates to the technical field of electrospinning, in particular to a laser-induced cavitation electrospinning device. Background technique [0002] Bubble electrospinning technology is based on changing the traditional electrospinning nozzle (capillary with a diameter of millimeter), and applying the principle of bubble dynamics, by forming many bubble-like protrusions on the free liquid surface of spinning (similar to Traditional Taylor cone), air bubbles are a common phenomenon in daily life and industrial production. The easiest way to generate bubbles is to force gas into the liquid, which can generate a large number of bubbles. The size and strength of the formed bubbles mainly depend on the ventilation rate, the external environment and the surface tension of the liquid; usually, the pressure on the lower surface of the bubble is greater than the pressure on the upper surface, thereby pushing the bubble to rise and deform; when th...

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Problems solved by technology

[0004] However, in the traditional bubble electrospinning method, the formation of bubbles is affected by many factors. The parameters of bubble generation are too random, and the size of the bubbles is difficult to accurately control, which greatly affects the quality and output of bubble spinning fibers.

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