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Polycarbonate nonwoven film and preparation method therefor

A technology of polycarbonate and non-woven fabrics, applied in the direction of one-component polycarbonate rayon, one-component polyester rayon, non-woven fabrics, etc., can solve processing and other problems, and achieve excellent performance and shape Uniform appearance and fast spinning speed

Inactive Publication Date: 2008-02-06
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitations of its solution properties, polycarbonate cannot be processed into a polycarbonate non-woven film with uniform appearance and reliable performance by electrospinning technology, especially large specific surface area and large porosity.

Method used

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  • Polycarbonate nonwoven film and preparation method therefor
  • Polycarbonate nonwoven film and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Specific steps are as follows:

[0039] 20 g of polycarbonate was dissolved in 80 g of chloroform, and magnetically stirred for 12 hours to obtain a 20 wt % transparent polycarbonate solution. Add 0.05wt% Tween-80 surfactant to the polymer solution in the polycarbonate solution, magnetically stir for 4 hours, and prepare the polycarbonate spinning solution process, as shown in Figure 1. Electrospinning is carried out in an electrospinning device as shown in FIG. 2 . During electrospinning, the prepared polycarbonate spinning solution 3 is contained in a spinneret 2 , and the spinning solution is propelled by a syringe pump 1 . The distance between the nozzle and the surface of the aluminum foil is 10cm, the nozzle 4 is connected to the positive pole of the high-voltage generator 5 as an anode, the aluminum foil 7 is connected to the negative pole of the high-voltage generator 5 as a cathode, the high-voltage generator 5 is connected, and the applied voltage is 10-30kV. ...

Embodiment 2

[0042] Using the electrospinning method of Example 1, only changing the solvent, the prepared non-woven film has an area of ​​5 cm × 5 cm and a thickness of 50 μm, wherein the electrospinning diameter is about 350 nanometers, and they are interlaced to form a film. The specific surface area of ​​the polycarbonate non-woven film can reach 35m 2 / g.

[0043] Specific steps are as follows:

[0044] 18 grams of polycarbonate were dissolved in 82 grams of tetrahydrofuran, and magnetically stirred for 12 hours to obtain a 18wt% transparent polycarbonate solution; 0.05wt% Tween-80 surfactant was added to the polymer solution in the polycarbonate solution During electrospinning, the prepared polycarbonate spinning solution 3 is filled in the spinneret 2, and the distance between the nozzle and the surface of the aluminum foil is 10 cm. 4. Connect the positive pole of the high-voltage generator 5 as the anode, and the aluminum foil 7 is connected with the negative pole of the high-vo...

Embodiment 3

[0046] Using the method of Example 1, changing the solvent, the prepared non-woven film has an area of ​​5 cm × 5 cm and a thickness of 50 μm, wherein the electrospinning diameter is about 300 nanometers, and they are interlaced to form a film. The specific surface area of ​​the polycarbonate non-woven film can reach 35m 2 / g.

[0047] Specific steps are as follows:

[0048] 15 g of polycarbonate was dissolved in 85 g of dimethylformamide, and magnetically stirred for 12 hours to obtain a 15 wt % transparent polycarbonate solution. Add 0.05wt% Tween-80 surfactant to the polymer solution in the polycarbonate solution, and magnetically stir for 4 hours to prepare a polycarbonate spinning solution. During electrospinning, the prepared polycarbonate spinning solution 3 is contained in the spinneret 2, the distance between the nozzle and the surface of the aluminum foil is 10 cm, the nozzle 4 is connected to the positive electrode of the high voltage generator 5 as an anode, and ...

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Abstract

The present invention relates to a polycarbonate non-woven cloth film and the preparing method thereof. The film is a membranous substance composed by staggered overlapping of polycarbonate electrostatic spinning 50nm-10micrometer in diameter; the thickness thereof is determined by the electric spinning time. The method comprises dissolving polycarbonate in a corresponding solvent and adding special surfactants to prepare a polycarbonate spinning solution; adjusting the concentration of the polycarbonate solution and the addition of the surfactants for electrostatic spinning. In the process of electrostatic spinning, the polycarbonate solution is, under the induction of electric fields, tensioned to be micro-nanometer grade fiber, which, then, is assembled into a non-woven cloth film. The polycarbonate non-woven cloth film of the present invention has the advantages of uniform appearance, large specific surface and large porosity, and can be applied to fields of tissue engineering, biological detection, catalyst loading, filtering material, etc.

Description

technical field [0001] The invention relates to a preparation method of electrospinning, in particular to a polycarbonate non-woven fabric film formed by electrospinning, and a polycarbonate non-woven fabric film prepared by adding a surfactant in a polycarbonate solution Methods. Background technique [0002] Polycarbonate films have good mechanical properties and biocompatibility, and are widely used in bioengineering, tissue engineering, biological detection and other fields. In order to expand its use, researchers have prepared polycarbonate films with large specific surface areas by various methods, and they have been applied in the fields of tissue engineering, biological detection, catalyst loading, and filter materials. For example, Jiang Xingyu et al. used polycarbonate film with nanopore structure combined with microfluidic technology to rapidly detect HIV virus (reference: X. Jiang et al. J. Am. Chem. Soc. 2003, 125, 5294). However, the practical application of ...

Claims

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Application Information

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IPC IPC(8): D04H3/16D01D5/00D01F6/64C08J5/18
Inventor 仰大勇蒋兴宇
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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