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Method for preparing nanofiber by electrostatic spinning, nanofiber obtained with method and application of nanofiber

A technology of electrospinning and nanofibers, which is applied in fiber processing, fiber chemical characteristics, textiles and papermaking, etc. It can solve the problems of difficult solvent recovery and adverse effects of nanofiber materials, and achieve good biocompatibility

Inactive Publication Date: 2015-05-13
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the good volatility of the organic solvent, it is easy to volatilize during the electrospinning process and obtain smooth fibers, but it is difficult to recover the solvent, and the residual solvent may have an adverse effect on the application of nanofiber materials

Method used

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  • Method for preparing nanofiber by electrostatic spinning, nanofiber obtained with method and application of nanofiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take by weighing 0.1g gelatin and 0.3g pullulan and be dissolved in 2ml deionized water with electronic balance, obtain the aqueous solution that mass volume ratio concentration is 20 (m / v)%, pullulan / gelatin mixing ratio is 75 / 25, will The solution was magnetically stirred at room temperature for 12 hours to dissolve completely; after standing for five minutes, it was electrospun, and the electrospinning parameters were: electrostatic voltage 20kv, receiving distance 11cm, and spinning speed 0.5ml / h. Receive it with aluminum foil, and finally obtain a non-woven fabric material with an average fiber diameter of 175 nm.

Embodiment 2

[0020] Take by weighing 0.16g gelatin and 0.32g pullulan with electronic balance and be dissolved in 2ml deionized water, obtain the aqueous solution that mass volume ratio concentration is 24 (m / v)%, pullulan / gelatin mixing ratio is 66 / 34, will The solution was magnetically stirred at room temperature for 12 hours to dissolve completely; after standing for five minutes, it was electrospun, and the electrospinning parameters were: electrostatic voltage 20kv, receiving distance 11cm, and spinning speed 0.5ml / h. Receive it with aluminum foil, and finally obtain a non-woven fabric material with an average fiber diameter of 179 nm.

Embodiment 3

[0022] Weigh 0.25 g of gelatin and 0.25 g of pullulan with an electronic balance and dissolve in 2 ml of deionized water to obtain an aqueous solution with a mass volume ratio concentration of 25% and a mixing ratio of pullulan / gelatin of 50 / 50, and magnetically stir the solution at room temperature Dissolve completely in 12 hours; after standing for five minutes, electrospinning, the electrospinning parameters are: electrostatic voltage 20kv, receiving distance 11cm, spinning speed 0.5ml / h. Receive it with aluminum foil, and finally obtain a non-woven fabric material with an average fiber diameter of 141 nm.

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Abstract

The invention discloses a method for preparing a nanofiber by electrostatic spinning. The method comprises the following steps: (1) preparing a pullulan-gelatin mixed solution, namely dissolving a pullulan and gelatin mixture in de-ionized water and magnetically stirring until fully dissolving the pullulan and gelatin mixture; (2) electrostatically spinning, namely performing electrostatic spinning on the pullulan-gelatin mixed solution obtained in the step (1), adjusting process parameters, and receiving by adopting a plane receiving device, wherein the process parameters are as follows: voltage in electrostatic field is 15-25 kv, the spinning speed is 0.3-0.7 ml / h, the receiving distance is 8-20 cm and the relative humidity is 20-50%. The method adopts water as a unique solvent, is free of organic solvent residues, prepares the nanofiber through the electrostatic spinning process, and can carry out biomimetic treatment on a natural extracellular matrix in composition and structure.

Description

technical field [0001] The invention relates to a method for preparing nanofibers by electrospinning and the obtained nanofibers and applications of the nanofibers, belonging to the field of electrospinning. Background technique [0002] The purpose of tissue engineering is to reshape and rebuild defective tissues and organs. Tissue engineering scaffold is an important part of tissue engineering research. The three-dimensional structure formed by the scaffold not only provides a favorable space for cells to obtain nutrition, growth and metabolism, but also secretes extracellular matrix for implanted cells and finally forms corresponding tissues. Or organ provides a good environment. In tissue engineering, the artificially made extracellular matrix, that is, temporary scaffolds, promotes cell adhesion, maintains differentiation without affecting cell proliferation, and induces the formation of new tissues at the same time. Scaffolds can be either natural or synthetic polyme...

Claims

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Application Information

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IPC IPC(8): D01F8/02D01F8/18D01D5/00D04H1/728A61K47/42A61K47/36A61L27/26A61L27/50C12N5/071
Inventor 钱永芳张振郑来久赵玉萍宋若远
Owner DALIAN POLYTECHNIC UNIVERSITY
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