Electro-spinning micro-nanofiber device and method for preparing micro-nanofiber

A micro-nano fiber, electrospinning technology, applied in fiber processing, textiles and papermaking, filament/thread forming, etc., can solve the problem of difficult parameter stable regulation, limited application development, and difficulty in mass production of diameter and directional electrospinning fibers. and other problems, to achieve the effects of enriching varieties, reducing high-voltage electric fields, and easy operation

Inactive Publication Date: 2016-10-12
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in industrial production, it is generally necessary to fix all other parameters before adjusting a certain parameter. In actual production, it is difficult to achieve stable control of all parameters, and it is difficult to produce a large number of electrospun fibers with uniform diameter and directionality. Limits the deployment of many applications

Method used

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  • Electro-spinning micro-nanofiber device and method for preparing micro-nanofiber
  • Electro-spinning micro-nanofiber device and method for preparing micro-nanofiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Weigh 8g of polyε-caprolactone, dissolve it in 20ml of dichloromethane as a solution, and stir it magnetically at room temperature for 60min to obtain a colorless and transparent electrospinning stock solution.

[0038] Inject the prepared electrospinning stock solution into a 5ml syringe, connect the syringe to the injection needle through a silicone tube, connect the positive stage of the high-voltage electrostatic generator to the two-hole spinneret metal sheet, and the ground stage to the external receiving device, and fix the spinneret On the rotary device, the rotary speed is adjusted to 70RPM, the flow rate of the syringe pump is adjusted to 20ml / h, the radius of the receiving device is selected to be 9cm, and then the rotary device and the high-voltage power supply are started at the same time, and the voltage is set to 15kv, and multiple yields and Directional electrospun fibers.

Embodiment 2

[0040] Weigh a solution with a mass fraction of PVP of 15%, use water as a solvent, and add 0.1g Fe 3 o 4 With 0.5g tetracycline drug, magnetically stirred at room temperature for 60min to obtain a colorless and transparent electrospinning stock solution.

[0041] Inject the prepared electrospinning stock solution into a 5ml syringe, connect the syringe to the injection needle through a silicone tube, connect the positive stage of the high-voltage electrostatic generator to the four-hole spinneret bearing, and the ground stage to the external receiving device, and fix the spinneret on On the rotary device, the rotary speed is adjusted to 180RPM, the flow rate of the syringe pump is adjusted to 15ml / h, the radius of the receiving device is selected to be 5cm, and then the rotary device and the high-voltage power supply are started at the same time, and the voltage is set to 12kv, and multiple yields and directions can be collected. permanent electrospun fibers.

Embodiment 3

[0043] Weigh 5g polyvinylpyrrolidone, dissolve it in 25ml ethanol, add 0.1g Fe 3 o 4 , magnetically stirred at room temperature for 60 minutes to obtain a brown electrospinning stock solution with evenly distributed magnetic powder.

[0044] Inject the prepared electrospinning stock solution into a 5ml syringe, connect the syringe to the injection needle through a silicone tube, connect the positive stage of the high-voltage electrostatic generator to the four-hole spinneret bearing, and the ground stage to the external receiving device, and fix the spinneret on On the rotary device, the rotary speed is adjusted to 3000RPM, the flow rate of the syringe pump is adjusted to 30ml / h, the radius of the receiving device is selected to be 13cm, and then the rotary device and the high-voltage power supply are started at the same time, and the voltage is set to 18kv to collect multiple yields and directions. permanent electrospun fibers.

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Abstract

The invention provides an electro-spinning micro-nanofiber device and a method for preparing a micro-nanofiber and belongs to the field of biological materials and tissue engineering. The electro-spinning micro-nanofiber device comprises a high-voltage power supply, receiving devices, a porous spinning jet and a rotary motor, wherein the porous spinning jet is of a hollow cylindrical structure, and the hollow part is an electro-spinning stock solution storage groove capable of accommodating an electro-spinning stock solution; a plurality of spray orifices are formed in the surface of the porous spinning jet; one pole of the high-voltage power supply is connected with the receiving devices, and the other pole of the high-voltage power supply is connected with the porous spinning jet; the rotary motor drives the porous spinning jet to rotate. By virtue of the porous device, the yield can be improved, and micro-nanofibers with uniform directivity are obtained. Meanwhile, the required application voltage can be greatly reduced, and the method for adjustment and control of the more uniform spinning directivity through a single step is also provided.

Description

technical field [0001] The invention belongs to the field of preparation of micro / nano materials, and in particular relates to an electrospinning micro / nano fiber device and a method for preparing micro / nano fibers. Background technique [0002] Micro / nanofibers have been prepared into fibrous films due to their high specific surface area and are widely used in drug carriers, biological scaffolds, tissue engineering and chemical applications. In the application of tissue repair, the fiber scaffold prepared by the micro / nanofiber stack can be used to simulate the human extracellular matrix structure, provide a micro-growth environment for cell attachment, proliferation, and differentiation, and play a role in the repair and regeneration of damaged tissues or organs. play an important role. [0003] Electrospinning technology is one of the ways to effectively produce and prepare micro-nano fibers. Its main mechanism is to flow an electrospinning stock solution at the tip of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00
CPCD01D5/0061D01D5/0069
Inventor 张明暐王力李劲松
Owner ZHEJIANG UNIV
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