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Electrospinning preparation method for hydrophilic/hydrophobic regulable thin film

A technology of electrospinning and electrospinning technology, which is applied in the field of electrospinning preparation of polymer films, can solve the problems of cumbersome and complicated operation methods, fixed contact angle angles, and limitations in application fields, and expand the scope of application fields and equipment The effect of economical price and effective and precise regulation

Inactive Publication Date: 2018-08-10
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these existing methods have many disadvantages. For example, the operation method is cumbersome and complicated, and the contact angle of the material prepared by the traditional method is fixed, which limits its application field. Therefore, if a thin film can be invented The preparation method that can precisely control the hydrophilicity and hydrophobicity must have broad application fields and research value

Method used

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  • Electrospinning preparation method for hydrophilic/hydrophobic regulable thin film
  • Electrospinning preparation method for hydrophilic/hydrophobic regulable thin film
  • Electrospinning preparation method for hydrophilic/hydrophobic regulable thin film

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Example 1: Dissolve polymethyl methacrylate (poly (methylmethacrylate), PMMA) and disperse red 1 (disperse red 1, DR1) in butyl acetate (n-Butyl acetate, BTA), and prepare to contain 1.1% The spinning solution of polymethyl methacrylate and 0.075% DR1 is placed in an electrospinning device with a needle with a diameter of 0.6mm, the fixed injection speed is set to 0.3ml / h, and the feeding distance is 12cm. Electrospinning was performed at room temperature with different working electric field strengths. The prepared film was received on a glass substrate covered with tinfoil.

[0028] The prepared PMMA / DR1 composite film was tested and characterized by a contact angle tester, figure 2 It is the result of 5 tests.

Embodiment 2

[0029] Example 2: Dissolve polyformaldehyde (polyformaldehyde, POM,) and disperse red 19 (disperse red 1, DR19) in dimethylformamide ( N , N -Dimethylformamide, DMF), prepared into a spinning solution containing 1.5% polyoxymethylene and 0.09% DR1, placed it in an electrospinning device with a needle diameter of 0.6mm, and set a fixed injection speed of 0.3ml / h , the feeding distance is 12cm, and the electrospinning is carried out at room temperature under different working electric field strengths. The prepared film was received on a glass substrate covered with tinfoil.

[0030] The prepared POM / DR19 composite film was tested and characterized by a contact angle tester, image 3 It is the result of 5 tests.

Embodiment 3

[0031] Example 3: Polyvinylpyrrolidone (poly(vinyl pyrrolidone), PVP) and disperse red 98 (disperse red 1, DR98) were dissolved in chlorobenzene (Chlorobenzene), and prepared to contain 2.0% polyvinylpyrrolidone and 0.10% DR1 The spinning solution is placed in an electrospinning device with a needle diameter of 0.6mm, the fixed injection speed is set to 0.3ml / h, the feeding distance is 12cm, and electrostatic spinning is carried out at room temperature under different working electric field strengths. spinning. The prepared film was received on a glass substrate covered with tinfoil.

[0032] The prepared PVP / DR98 composite film was characterized by a contact angle tester, Figure 4 It is the result of 5 tests.

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Abstract

The invention relates to an electrospinning preparation method for hydrophilic / hydrophobic regulable thin film. A polymer / dipole mixed solution is prepared into the high-quality composite thin film byutilizing an electrospinning technology, the orientation degree and rotation direction of dipoles in the thin film are precisely controlled by regulating the strength and direction of an electric field in the electrospinning process, and therefore the hydrophilic and hydrophobic properties of the surface of the prepared composite thin film are precisely regulated. The simple and effective preparation method is provided for the preparation of the hydrophilic / hydrophobic thin film.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to an electrospinning preparation method of a hydrophilic / hydrophobic adjustable polymer film Background technique [0002] As people pay more and more attention to the surface properties of solids, wettability is one of the biggest concerns, and the hydrophobicity of solid surfaces and superhydrophobic surfaces with contact angles greater than 150° are the focus of researchers. This super-hydrophobic interface material can be used for the transportation of oil pipelines; for micro-syringe needle points; waterproof and anti-fouling treatment; and has a wide range of applications in anti-fouling and anti-corrosion of ocean-going ships. Previous studies have shown that super-hydrophobic surfaces can be achieved in two ways, one is the microscopic surface structure, that is, surface roughness, that is, bionic methods, and the other is to modify the surface with low surface energy subst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4282D04H1/4291D04H1/4326D04H1/4334D04H1/435D04H1/728D01F1/10
CPCD01F1/10D04H1/4282D04H1/4291D04H1/4326D04H1/4334D04H1/435D04H1/728
Inventor 王世伟王冕
Owner CHANGCHUN UNIV OF TECH
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