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Electrostatic spinning method for polyhydroxylated polymer

A polyhydroxy polymer, polyhydroxy compound technology, applied in spinning solution preparation, single-component polyester rayon, filament/thread forming, etc., can solve the problem of uneven distribution of fiber diameter, low solvent volatilization speed, The fibers are easy to stick together and other problems, so as to achieve the effect of improving the electrospinning speed, uniform diameter distribution and product quality improvement.

Inactive Publication Date: 2008-10-01
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the invention patent with the publication number CN101126179A "Composite preparation method and device for ultra-fine polymer high-speed air-blown electrospinning", a technical solution for increasing the speed of polymer electrospinning by physical means is disclosed, but this method requires a special The device is more complex than the general electrospinning device and needs to control the speed of the airflow
In the document "Preparation of Ultrafine Fiber Composite Materials by Electrospinning" [Macromolecule Materials Science and Engineering. The electrospinning speed of the solution is relatively low, but due to the low solvent evaporation rate during the spinning process, the fibers are easy to stick together, the fiber diameter distribution is uneven and the surface is not smooth

Method used

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  • Electrostatic spinning method for polyhydroxylated polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Weighed 1.6 g of polyvinyl alcohol powder with a degree of polymerization of 2400, added it to 18.4 g of deionized water, and stirred magnetically for 3 hours at 80° C. to obtain a uniform aqueous solution of polyvinyl alcohol with a mass fraction of 8%.

[0018] Add 0.32g vitamin C to the above solution, and magnetically stir at 25°C for 1-2 hours to prepare a blended spinning stock solution with a vitamin mass fraction of 20% (relative to the mass of polyvinyl alcohol).

[0019] Use a capillary nozzle tube with an inner diameter of 0.5mm as the spinneret hole, use a silver needle with a diameter of less than 1mm as the electrode, and an aluminum foil as the receiving plate. C blend solution for electrospinning.

[0020] The time required for electrospinning 5ml of 8% polyvinyl alcohol aqueous solution and 8% polyvinyl alcohol / vitamin C (20%) blended solution was measured respectively.

[0021] At room temperature, a nonwoven fabric with a diameter of 100-280 nm was o...

Embodiment 2

[0025] Weigh 1.4 g of polyvinyl alcohol powder with a degree of polymerization of 2400, add 18.6 g of deionized water, and stir magnetically at 80° C. for 2 hours to prepare a uniform polyvinyl alcohol aqueous solution with a mass fraction of 7%.

[0026] Add 0.14 g of saponin to the above solution, and magnetically stir at 25° C. for 1 to 2 hours to prepare a blend solution with a mass fraction of saponin of 10% (relative to the mass of polyvinyl alcohol).

[0027] Use a capillary nozzle tube with an inner diameter of 0.5mm as the spinneret hole, use a silver needle with a diameter of less than 1mm as the electrode, and an aluminum foil as the receiving plate. Under the conditions of a voltage of 15kv and a collection distance of 15cm, the polyvinyl alcohol / saponin blended spinning stock solution Perform electrospinning.

[0028] Using the same electrospinning process as above, the time required for electrospinning 5ml of polyvinyl alcohol concentration of 7% spinning stock s...

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Abstract

The invention discloses an electrostatic spinning method of polyhydroxylated polymer, comprising the following steps of dissolving polyhydroxylated polymer in a solvent to prepares polyhydroxylated polymer solution with mass percent 5% to 10%; adding water-soluble polyol including saponarin, flavonoid glycoside, alkaloid, sterol, diterpene or sesquiterpene compound, and arbutin, sophorolipid or vitamin with mass percent as 5% to 40% of total amount of polyhydroxylated polymer, after uniform agitation, undergoing deaeration treatment to prepare stock solution of electrostatic spinning. Under the condition of the same spinning technique, the speed for producing the stock solution of electrostatic spinning can be 3 to 6 times faster by the method; diameter of the produced fiber is nano-level to sub-micron level with smooth surface and uniform distributed diameter; the quality of product is improved obviously; the method has simple technique without special manufacturing device; therefore, the method is easy for popularization and application.

Description

technical field [0001] The invention relates to a method for electrospinning of polyhydroxy polymers, in particular to the preparation of a stock solution of electrospinning of polyhydroxy polymers, and belongs to the technical field of nanofiber preparation. Background technique [0002] In recent years, electrospinning technology has become a research hotspot. Ultrafine fibers with diameters from nanometer to submicron can be obtained by electrospinning, which has the characteristics of large specific surface area and high porosity, and its application in biomedical materials has attracted people's attention. However, the general electrospinning speed is slow and the efficiency is low, which is not conducive to industrialization. Therefore, seeking a simple and effective method to improve the electrospinning speed has become an important aspect of research. [0003] Electrospinning of polyhydroxy polymers such as polylactic acid, polycaprolactone, polyethylene glycol, pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D1/02D01D1/10D01D5/00D01F6/50D01F6/94D01F6/92D01F1/10
Inventor 戴礼兴冯惠李文莉
Owner SUZHOU UNIV
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