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Preparation method of variable color nanofiber film

A nanofiber film and color-changing technology, which is applied in fiber treatment, textiles, papermaking, non-woven fabrics, etc., can solve the problems of large performance impact, easy blockage of needles, low output, etc., and achieve simple preparation process, low cost, The effect of high yield

Inactive Publication Date: 2016-06-08
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional nano-electrospinning technology has some defects, such as low output, and it is greatly affected by the solubility and viscosity of the solution, and because the needle diameter is small, it is easy to block the needle

Method used

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  • Preparation method of variable color nanofiber film

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preparation example Construction

[0029] Such as figure 1 Shown, the preparation method of a kind of variable color nanofibrous film of the present invention, it comprises steps:

[0030] S1: Weigh the polymer with an electronic scale, dissolve it in an organic solvent, and fully dissolve it to obtain a polymer solution;

[0031] S2: Weigh an acid-base indicator with a solute mass of 4% to 6% of the polymer solution with an electronic scale, dissolve it in the above polymer solution, and fully dissolve it to obtain a bubble electrospinning solution;

[0032] S3: Set the appropriate spinning voltage and receiving distance, adopt air bubble electrospinning, and obtain the nanofiber film on the receiving plate.

[0033] In the step S1, the high polymer is a water-insoluble high polymer such as polyacrylonitrile, polyvinylidene fluoride, polystyrene, polyethersulfone, or polylactic acid.

[0034] In the step S1, the organic solvent is N,N-dimethylformamide or N,N-dimethylacetamide or a mixed solvent of N,N-dimet...

Embodiment 1

[0050] A method for preparing a variable color nanofibrous membrane, the steps are:

[0051] (1) Weigh 2.5g of polyacrylonitrile with an electronic scale, dissolve in 25g of N,N-dimethylformamide, and fully dissolve;

[0052] (2) Take 0.15g of phenolphthalein with an electronic scale and dissolve it in the above solution to obtain a bubble electrospinning solution;

[0053] (3) Bubble spinning: the spinning voltage is 20V, and the receiving distance is 20cm.

Embodiment 2

[0055] A method for preparing a variable color nanofibrous membrane, the steps are:

[0056] (1) Weigh 3.5g of polyvinylidene fluoride with an electronic scale, dissolve in 25g of N,N-dimethylformamide, and fully dissolve;

[0057] (2) Take 0.175g phenolphthalein with an electronic scale and dissolve it in the above solution to obtain a bubble electrospinning solution;

[0058] (3) Bubble spinning: the spinning voltage is 20V, and the receiving distance is 20cm.

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Abstract

The invention relates to a preparation method of a variable color nanofiber film, which comprises the following steps: 1, weighing a high polymer by an electronic scale, dissolving the high polymer in an organic solvent, and sufficiently dissolving the high polymer to obtain high polymer solution; 2, weighing an acid-base indicator of which solute mass is 4 percent to 6 percent of that of the high polymer solution by the electronic scale, dissolving the acid-base indicator in the high polymer solution, and sufficiently dissolving the acid-base indicator to obtain bubble electrostatic spinning solution; and 3, setting a proper spinning voltage and receiving distance, and adopting bubble electrostatic spinning to obtain the nanofiber film on a receiving plate. According to the invention, the excellent characteristics of nanofibers are combined with the variable color property of the acid-base indicator, and the color of the obtained nanofiber film can be changed in solution with different pH values. The preparation method is simple in preparation process, low in cost and high in yield, and is convenient for large-scale batch production.

Description

technical field [0001] The invention relates to the technical field of preparation of functional nanofibers, in particular to a preparation method of a color-changing nanofiber film. Background technique [0002] Nanofibers have a large specific surface area, aspect ratio (length-to-diameter ratio), radius of curvature, and strong interpenetration with other substances. Nanofiber membranes have extremely high porosity, excellent flexibility, and adsorption properties. , these remarkable properties make nanofibers have great application prospects in many important fields. [0003] The color of the color-changing nanofiber membrane changes by sensing changes in the pH value of the surrounding environment. This nanofiber membrane can be used in food packaging, textile engineering, tissue engineering and other fields. [0004] The traditional nano-electrospinning technology has some defects, such as low yield, and it is greatly affected by properties such as solution solubility...

Claims

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Application Information

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IPC IPC(8): D04H1/728D01D5/00
CPCD04H1/728D01D5/003
Inventor 何吉欢宁翠娟
Owner SUZHOU UNIV
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