A device and method for preparing oriented electrospun fibers

Abstract

The invention discloses a directional arranged electrostatic spinning fiber preparation apparatus which comprises a solution control system and a spinning reception system, wherein the solution control system comprises a metallic needle head, a propulsion device for controlling the flow velocity of spinning solution in the metallic needle head and an electrostatic generating device for controlling the electrostatic voltage on the metallic needle head, and the spinning reception system comprises a rotating disc receiver and a drive unit for driving the rotating disc receiver to rotate. The rotating disc receiver is cylindrical, the side surface is wrapped by a reception layer for receiving electrostatic spinning material, and the axial direction of the metallic needle head is parallel to the axial direction of the rotating disc receiver. The metallic needle head is arranged in a curved surface, where the side surface of the rotating disc receiver is located, and a gap is arranged between the metallic needle head and the bottom close to the rotating disc receiver. The method disclosed in the invention controls and regulates the orientation degree of electrostatic spinning fibers by controlling DC voltage, the flow velocity of polymer solution, the distances between the metallic needle head and the rotating disc receiver, the rotating speed of the rotating disc receiver and the diameter of the rotating disc receiver. The operation performance is good.

Description

technical field [0001] The invention relates to the technical field of electrospinning preparation, in particular to a device and method for preparing oriented electrospinning fibers. Background technique [0002] Electrospinning technology is a technology that uses polymer solutions or melts as raw materials to obtain fibers with micro-nano scales under the action of an external high-voltage electric field. With the progress of research, more and more polymers, even some polysaccharides and lipids have been prepared into fiber materials by electrospinning technology. Coupled with the control of the material structure during the preparation process, as well as the modification of the functionalization of the material, various electrospun materials with different components, properties, structures and functions are widely used in many fields, including biomedicine, filtration , catalysis, sensing, etc. [0003] The structure and morphology of electrospun materials have a ve...

AI Technical Summary

Problems solved by technology

Among them, the electrospun fibers prepared by the drum method and the turntable method have a low degree of fiber orientation, and it is difficult to meet the requirements in some application directions that require a relatively high degree of fiber orientation, such as flexible electronics and sensing; while the parallel electrode method Although the orientation of the electrospun fibers prepared by the copper wire drum method is relatively high, after the spinning receiving time increases, the increase in the thickness of the material will lead to a deterioration of the orientation of the fibers, which affects the uniformity of the material.

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