Method for preparing patterning nanofiber membrane by utilizing insulating receiving template static spinning

A nanofiber membrane and patterning technology, applied in fiber processing, textiles and papermaking, non-woven fabrics, etc., can solve the problems of inability to prepare nanofiber membranes, unable to precisely control fiber deposition, etc., to promote the development of applications, controllable and repeatable, pattern-accurate results

Inactive Publication Date: 2012-09-26
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods cannot precisely control the deposition of fibers, let alon

Method used

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  • Method for preparing patterning nanofiber membrane by utilizing insulating receiving template static spinning
  • Method for preparing patterning nanofiber membrane by utilizing insulating receiving template static spinning
  • Method for preparing patterning nanofiber membrane by utilizing insulating receiving template static spinning

Examples

Experimental program
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Effect test

Embodiment 1

[0035]Dissolve 0.5g gelatin and 0.5g polycaprolactone in 10ml of trifluoroethanol, add 20ul acetic acid to the solution, stir for 24h until completely dissolved, and obtain gelatin / polycaprolactone with a concentration of 10% (g / ml) spinning solution. Use a 10ml syringe and a needle with an inner diameter of 1.2mm to extract the gelatin / polycaprolactone spinning solution and fix it on a micro-injection pump. through as figure 1 The electrospinning device shown is used for electrospinning, and the parameters are: voltage 16kv, receiving distance 14cm, injection rate 1ml / h, ambient temperature 26°C, and ambient relative humidity 55%. A polystyrene foam with a thickness of 25 mm was used as a receiving device, and a nanofibrous membrane with a patterned structure was obtained. The conductivity of polystyrene is (σ)10 -16 S / m, is a typical insulating material. Therefore, it can be considered that the deposition of electrospun fibers is controlled by the surface topography of t...

Embodiment 2

[0037] Dissolve 0.7g gelatin and 0.3g polycaprolactone in 10ml of trifluoroethanol, add 20ul acetic acid to the solution, stir for 24h until completely dissolved, and obtain gelatin / polycaprolactone with a concentration of 10% (g / ml) spinning solution. Use a 10ml syringe and a needle with an inner diameter of 1.2mm to extract the gelatin / polycaprolactone spinning solution and fix it on a micro-injection pump. through as figure 1 The electrospinning device shown is used for electrospinning, and the parameters are: voltage 12kv, receiving distance 11cm, injection rate 2ml / h, ambient temperature 28°C, and ambient relative humidity 45%. Using a patterned napkin as a receiving device, a nanofibrous film with a patterned structure is obtained, which is very similar to its surface pattern. Such as image 3 , where a is the receiving device (a napkin with a pattern), and b is the fiber film obtained with the receiving device. Figure 4 A magnified view of patterned fibers electros...

Embodiment 3

[0039] Dissolve 0.6g gelatin and 0.4g polycaprolactone in 10ml of trifluoroethanol, add 20ul acetic acid to the solution, stir for 24h until completely dissolved, and obtain gelatin / polycaprolactone with a concentration of 10% (g / ml) spinning solution. Use a 10ml syringe and a needle with an inner diameter of 1.2mm to extract the gelatin / polycaprolactone spinning solution and fix it on a micro-injection pump. through as figure 1 The electrospinning device shown is used for electrospinning, and the parameters are: voltage 15kv, receiving distance 12cm, injection rate 2ml / h, ambient temperature 23°C, and ambient relative humidity 54%. Using toilet paper commonly used in daily life as the receiving device, a nanofibrous membrane with a patterned structure that is very similar to its surface embossed pattern was obtained. Figure 5 It is a magnified electron microscope image of toilet paper; Figure 6 A magnified view of the patterned fiber electrospun with toilet paper as the ...

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Abstract

The invention relates to a method for preparing a patterning nanofiber membrane by utilizing insulating receiving template static spinning. The method comprises the following specific steps: (1) dissolving high polymer in a solvent, and stirring until the high polymer is completely dissolved, so as to obtain a spinning solution; and (2) carrying out static spinning on the spinning solution, and taking an insulating substance with a topological structure on the surface as a static spinning receiving device, so as to obtain the patterning nanofiber membrane. According to the preparation method disclosed by the invention, the nanofiber membrane with various patterns can be prepared conveniently and quickly at low cost. Since the patterning nanofiber membrane obtained by the invention is accurate in pattern, controllable and good in repeatability, the patterning nanofiber membrane has good application prospect in the fields of industry and medicine, especially in the field of regenerative medicine based on tissue engineering.

Description

technical field [0001] The invention belongs to the field of preparation of nanofiber membranes, in particular to a method for preparing patterned nanofiber membranes by electrospinning an insulating receiving template. Background technique [0002] Electrospinning is a simple and easy way to prepare nanofibers. Due to the advantages of high porosity and large specific surface area, the obtained nanofibers have broad application prospects in the fields of sensors, tissue engineering, catalysis, composite reinforcement materials, and filtration. The patterned nanofibrous structure has important application value in the above fields. For example, in tissue engineering, for tissues such as muscles, nerves, blood vessels, and bones, patterned nanofibrous structures can better simulate their specific structures, thereby promoting cell adhesion, migration, proliferation, differentiation, and tissue regeneration [Dvir , T., et al. Nature Nanotechnology, 2011.6(1): p.13-22.]. How...

Claims

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Application Information

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IPC IPC(8): D04H1/728D01D5/00
Inventor 张彦中赵仕芳周祺惠袁卉华
Owner DONGHUA UNIV
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