Device for electrospinning three-dimensional controlled structure of nanofibers

Abstract

The invention discloses a device for electrospinning a three-dimensional controlled structure of nanofibers, and relates to a device for electrospinning the nanofibers. The device is provided with a direct-current high-voltage power supply, a flow controller, a spinning spray head array, a spray head array supporting plate, a guide rail, a probe array, a probe array substrate, a controller and anauxiliary direct-current high-voltage power supply, wherein the anode of the direct-current high-voltage power supply is electrically connected with the spinning spray head array; the cathode of direct-current high-voltage power supply is electrically connected with the cathode of the auxiliary direct-current high-voltage power supply and is grounded; the flow controller is communicated with the spray heads of the spinning spray head array through a flow conveying pipe; the spinning spray head array is arranged on the spray head array supporting plate; the spray head array supporting plate isin movable fit with the guide rail; the probe array is arranged on the probe array substrate and is positioned below the spinning spray head array; the control signal output end of the controller is electrically connected with the probes of the probe array respectively; and the output end of the auxiliary direct-current high-voltage power supply is connected with the power supply input end of thecontroller. A mold is not needed, production efficiency is high, and the external shape and internal porosity and pore size of the nanofibers can be freely adjusted.

Description

technical field [0001] The invention relates to a nanofiber electrospinning device, in particular to an electrospun nanofiber three-dimensional controllable structure device. Background technique [0002] The three-dimensional structure based on nanofibers is widely used in composite materials, tissue engineering, biological scaffolds, energy and other fields. From the perspective of structural features, there are mainly large-area smooth components (such as composite aircraft wings and automobile outer coverings, etc.), complex three-dimensional shape structures (such as composite material aircraft landing gear rear struts and automobile parts), and complex three-dimensional shapes. And the inside has micro-nano porosity and pore size required structure (such as bone or blood vessel biological scaffold) and other forms. The three-dimensional structure with porous interior and a certain porosity and micro-nano pore size is used as a biological scaffold to facilitate the mig...

AI Technical Summary

Problems solved by technology

Of course, other methods such as conductive rings, sharp-edged rotating conductive aluminum disk collectors, rotating drum collectors, double collection rings, and water eddies can also orient nanofibers, but they are mainly used to make yarns (yarn) , the three-dimensional structure of the complex shape cannot be obtained

[0005] There are few preparation methods for the three-dimensional structure of nanofibers, mainly (1) using a flat collection plate / net to collect nanofibers to form a three-dimensional structure (Yuan Ji, Kaustabh Ghosh, Xiao Zheng Shu, et al.Biomaterials 27(2006) 3782-3792) , this method cannot directly obtain a three-dimensional nanofiber structure; (2) construct a three-dimensional cartilage tissue bioscaffold structure through a combination of rapid prototyping and electrospinning technology, in which the three-dimensional structure of rapid prototyping large-diameter fibers is used to build a high-strength framework (Lorenzo Moroni , Roka Schotel, Doreen Hamann, Joost R.de Wijn, and Clemens A.van Blitterswijk Adv.Funct.Mater.2008, 18, 53-60), can manufacture complex shape structures, but the technology is very inefficient and cannot be applied to Batch manufacturing of structural parts and manufacturing of large-area free-form surfaces; (3) The rotary jet spinning method can prepare well-oriented circular three-dimensional nanofiber bioscaffolds on a circular collector, and the three-dimensional structure can only be a circular body. Not easily scalable (Mohammad Reza Badrossamay, Holly Alice McIlwee, Josue A. Goss, Kevin Kit Parker. Nano Lett. 2010, 10, 2257-2261)

Chinese researchers use a simple tubular electrode structure as a mold to produce a hollow tubular three-dimensional nanofiber structure, but the prepared hollow tube three-dimensional structure is relatively simple and fixed, and can achieve a small area (Daming Zhang and Jiang Chang, Nano Lett. , 2008, 8, 3283-3287)

Images