Preparation of multi-stage structure polycaprolactone super hydrophobic electrostatic spinning film by using one-step forming method

A technology of electrospinning and polycaprolactone, which is applied in the direction of electrospinning, filament/thread forming, spinning solution preparation, etc., can solve the general hydrophobicity of polycaprolactone fiber membrane and the blank of polycaprolactone membrane , complex preparation process and other issues, to achieve the effect of short preparation cycle, low cost and simple preparation method

Inactive Publication Date: 2019-02-15
JILIN UNIV
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to provide a polycaprolactone superhydrophobic electrospinning film prepared by a one-step forming method, which solves the general hydrophobicity of polycaprolactone fiber membranes in the prior art, and the preparation process is relatively complicated. The uncontrollable shape and the blank of polycaprolactone membrane in the field of oil-water separation

Method used

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  • Preparation of multi-stage structure polycaprolactone super hydrophobic electrostatic spinning film by using one-step forming method
  • Preparation of multi-stage structure polycaprolactone super hydrophobic electrostatic spinning film by using one-step forming method
  • Preparation of multi-stage structure polycaprolactone super hydrophobic electrostatic spinning film by using one-step forming method

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preparation example Construction

[0029] see Figure 1 to Figure 4 Shown, the polycaprolactone superhydrophobic electrospinning film of multilevel structure is prepared by one-step forming method of the present invention, and preparation method is simple, and the preparation method of polycaprolactone multilevel structure superhydrophobic film with good hydrophobicity can successfully Used in the field of oil-water separation. The preparation method is to add matrix polymer material (polycaprolactone), hydrophobic silicon dioxide nanoparticles and methyl silicone oil to an organic solvent. Therefore, the electrospinning property of the solution and the hydrophobicity of the polycaprolactone film are effectively improved. Specific steps are as follows:

[0030] Step 1: dissolving the organic polymer material in an organic solvent, and performing electromagnetic stirring at room temperature to prepare an electrospinning solution. Among them, organic polymer materials include polycaprolactone and methyl silico...

Embodiment 1

[0041] This implementation provides a method for preparing a polycaprolactone beaded structure fiber membrane, comprising the following steps:

[0042] Weigh 1.50g of polycaprolactone particles, dissolve in chloroform and N,N-dimethylformamide mixed solvent system (volume ratio: 8mL / 2mL), stir magnetically for 3-4 hours, stirring temperature is 20-30 Celsius to obtain a uniform spinning solution; set the electrospinning parameters: the working voltage is set to 10kV, the receiving distance is 12cm, and the advancing speed is 1.0mL / h; the electrospun membrane is obtained, and the water contact angle is measured.

Embodiment 2

[0044]This implementation provides a method for preparing a polycaprolactone / silica beaded structure fiber membrane, comprising the following steps:

[0045] Weigh 1.50g of polycaprolactone particles, add 0.15g of hydrophobic silica nanoparticles, dissolve in chloroform and N,N-dimethylformamide mixed solvent system (volume ratio: 8mL / 2mL), magnetically stir 3-4 hours, the stirring temperature is 20-30 degrees Celsius, and ultrasonic treatment for 30 minutes to obtain the polymer spinning solution; set the electrospinning parameters: the working voltage is set to 10kV, the receiving distance is 12cm, and the advancing speed is 1.0mL / h ; Obtain the electrospun film, and carry out the water contact angle measurement.

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Abstract

The invention relates to preparation of multi-stage structure polycaprolactone super hydrophobic electrostatic spinning film by using a one-step forming method, belongs to the field of preparation ofelectrostatic spinning nano fiber and super hydrophobic. The method comprises the preparation of an electrostatic spinning polycaprolactone / methyl silicone oil precursor solution and adding hydrophobic silica dioxide nanoparticles to the precursor solution and stirring by ultrasound for 0.5 hour; the polycaprolactone film is prepared through electrostatic spinning. Usually, the water contact angleof the polycaprolactone / methyl silicone oil fiber film is 136 degrees and around. The water contact angle of the polycaprolactone / methyl silicone oil / nano silica dioxide bead structural film can reach 151 degrees and around. The film has strong oil adsorption ability and oil-water separation ability. The preparation process is simple and the energy consumption is low. Polycaprolactone is a natural degradable and environment-friendly polymer, does not pollute the environment and has a great prospect in the field of oil-water separation.

Description

technical field [0001] The invention relates to the fields of electrospinning nanofiber preparation and superhydrophobic, in particular to a polycaprolactone superhydrophobic electrospinning film prepared by a one-step forming method. Background technique [0002] In people's daily life, due to the unique surface properties of the super-hydrophobic membrane, it can be widely used in national defense, daily life, high-tech biology and many industrial fields. For example, because the super-hydrophobic film has the characteristics of hydrophobicity, small friction coefficient and corrosion resistance, it can be used in anti-fouling of ships to reduce the adhesion of marine organisms on the outer layer of the ship and the corrosion of seawater on the hull; the super-hydrophobic film layer Hydrophobicity can also make it used in textiles, glass surfaces of building exteriors, high-voltage power transmission and antifouling, and sports machinery. Therefore, the research on superh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/728D04H1/435D01D5/00D01D1/02D01F1/10
CPCD01D1/02D01D5/003D01F1/10D04H1/435D04H1/728
Inventor 张国辉李莉莉
Owner JILIN UNIV
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