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No-solvent electrically spinning process for preparing micron and nanometer fiber

A technology of micro-nano fiber and nano-fiber, applied in fiber processing, rayon manufacturing, fiber chemical characteristics, etc., can solve the problem of increasing the production cost of micro/nano fiber, the limitation of micro/nano fiber industrialization, and the absence of micro/nano fiber and other issues, to achieve the effect of easy promotion and application, easy operation and repetition, and environmental friendliness

Inactive Publication Date: 2007-08-22
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although many micro / nano fibers have been prepared by electrospinning, organic solvents are generally used in solution spinning, and their usage can reach up to 80-95%, which will inevitably cause great pollution to the environment And increase the production cost of micro / nano fibers, so that the industrialization of micro / nano fibers prepared by electrospinning is limited to a certain extent
At present, there is no report on the preparation of micro / nanofibers by solvent-free electrospinning

Method used

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  • No-solvent electrically spinning process for preparing micron and nanometer fiber
  • No-solvent electrically spinning process for preparing micron and nanometer fiber
  • No-solvent electrically spinning process for preparing micron and nanometer fiber

Examples

Experimental program
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Effect test

Embodiment 1

[0026] In a 20ml Erlenmeyer flask, add 0.07g of photoinitiator 1-hydroxy-cyclohexyl phenone (Gencure 184) to 2.19g of polyester acrylate (Gencure PEO 2257), cover it with black paper and place it at room temperature Stirred for 24 hours. Put the spinning solution into the spinneret, the inner diameter of the spinneret is 1mm, wrap the spinneret with black paper, then wrap it with aluminum foil, insert the copper electrode as the anode, and use the aluminum foil as the cathode to receive the product , the distance between the two pole plates is 45cm, and a 800mw / cm 2 The UV-LED point light source is applied at a voltage of 17kV for electrospinning, and at the same time, the UV-LED point light source is turned on for irradiation. After 10 minutes, short fibers with an average length of 4.5 μm and a diameter of 400 nm will be obtained on the aluminum foil.

Embodiment 2

[0028] In a 20ml Erlenmeyer flask, add 0.07g photoinitiator 1-hydroxy-cyclohexyl phenone (Gencure 184) to 2.19g polyester acrylate (Gencure PEO 2257), cover it with black paper, at room temperature Stirred for 24 hours. Heat at 50°C for 2 hours, put the spinning solution into the spinneret, the inner diameter of the spinneret is 1mm, wrap the spinneret with black paper, then wrap it with aluminum foil, and insert the copper electrode as the anode. Use aluminum foil as the cathode to receive the product, the distance between the two plates is 45cm, place a PHILIPS 400W ultraviolet light source at a distance of 10cm from the spinneret and 45cm from the spinneret path, apply a voltage of 17kV, and turn on the PHILIPS 400W ultraviolet light source at the same time, after 10 minutes Finally, fibers with a diameter of 3 μm will be obtained on the aluminum foil.

Embodiment 3

[0030] In a 20ml Erlenmeyer flask, add 0.07g photoinitiator 1-hydroxy-cyclohexyl phenone (Gencure 184) to 2.19g polyester acrylate (Gencure PEO 2257), cover it with black paper, at room temperature Stirred for 24 hours. After heating at 50°C for 2 hours, after stirring at room temperature for 48 hours, put the spinning solution into the spinneret, the inner diameter of the spinneret is 1mm, wrap the spinneret with black paper, and wrap it with aluminum foil. On the package, a copper electrode is inserted as the anode, and an aluminum foil is used as the cathode to receive the product. The distance between the two pole plates is 45cm, and a PHILIPS 400W ultraviolet light source is placed at a distance of 10cm from the spinneret and 45cm from the spinneret path, and the applied voltage is 17kV. At the same time, the PHILIPS 400W ultraviolet light source is turned on. Fiber bundles with a diameter of approximately 200 nm.

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Abstract

The present invention belongs to the field of micron / nanometer fiber preparing technology, and is especially no-solvent electrically spinning and ultraviolet curing process for preparing micron / nanometer fiber. The reacted components include acrylate oligomer, active diluent and photoinitiator. The process includes pre-polymerizing to form oligomer, electrically spinning while irradiating with ultraviolet ray to decompose the photoinitiator for generating free radical initiating the polymerization of the pre-polymer and splitting fiber to generate micron / nanometer fiber. The process has material utilizing rate as high as 100 %, no environmental pollution caused by volatized solvent and low production cost.

Description

technical field [0001] The invention belongs to the preparation technology of micro / nano fibers, and in particular relates to a method for preparing micro / nano fibers by combining electrospinning technology and ultraviolet light curing technology under solvent-free conditions. Background technique [0002] Electrospinning technology has become one of the most important means to prepare micro / nanofibers. With the rapid development of nanotechnology, the problems of environmental pollution and production cost have attracted more and more attention. Although many micro / nano fibers have been prepared by electrospinning, organic solvents are generally used in solution spinning, and their usage can reach up to 80-95%, which will inevitably cause great pollution to the environment And increase the production cost of micro / nano fibers, so that the industrialization of micro / nano fibers prepared by electrospinning is limited to a certain extent. So far, there are no reports about t...

Claims

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Application Information

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IPC IPC(8): D01D5/00D01D10/00D01D4/00D01F6/62D01F1/10
Inventor 王策吴红亮张靓李振宇黄绘敏郑伟杨帆
Owner JILIN UNIV
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