Polymer electrospun fibers, preparation method thereof and application thereof

A technology of electrospinning and polymer, which is applied in the direction of conjugated synthetic polymer artificial filament, fiber treatment, textile and paper making, which can solve the problems of hindering deposition and waste, and achieve pain relief, simple operation and good liquid absorption sexual effect

Inactive Publication Date: 2010-08-18
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in a certain deposition of material outside the target area which is wasteful
At the same time, because the fibers will be attracted by the electric field and preferentially deposited in the part of the wound close to the electrospinning equipment, the fibers will be hindered by the electric field from being effectively deposited in the depth of scratches or other wounds

Method used

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  • Polymer electrospun fibers, preparation method thereof and application thereof
  • Polymer electrospun fibers, preparation method thereof and application thereof
  • Polymer electrospun fibers, preparation method thereof and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Medical dressings are prepared using fibers containing polycaprolactone and / or linear polyethyleneimine.

[0076] Polycaprolactone was dissolved in acetone to prepare an 18% (w / w) solution. A 25% (w / w) solution was prepared by dissolving linear polyethyleneimine in ethanol. Samples were prepared by mixing the above solutions. And use a variety of pH adjusters. When alginic acid or Carbopol is used, its mass fraction in the two polymers (polycaprolactone / linear polyethyleneimine) is 2.9% or its mass fraction in the polymer solution (polycaprolactone / linear polyethyleneimine ) at a concentration of 2.9% (w / w) In order to mix the pH adjuster, alginic acid was first dissolved in a small amount of ethanol, followed by a linear polyethyleneimine solution and finally a polycaprolactone solution. The final mixture is immediately spun through the above-mentioned electrospinning device 1 to avoid the aggregation of the pH regulator, and to obtain a medical composite, that is, ...

Embodiment 2

[0102] Fibers are prepared from various composite polymer solutions by adding therapeutic components to the raw material solution.

[0103] Prepare polycaprolactone (PCL) solution, polyhydroxyethylmethacrylate (Poly-HEMA) solution, polyvinylpyrrolidone (PVP) solution, polyethyloxazoline (PEOz) solution, polyoxyethylene (PEO) solution, And linear polyethyleneimine (L-PEI) solution, by adding different therapeutic components to it, forming a variety of composite polymer solutions to make fibers.

[0104] When preparing polycaprolactone (PCL) solution, first add 12.29g polycaprolactone (PCL) and 50g acetone in the beaker, heat until dissolving, after the polymer dissolves, the solution is stirred and cooled to room temperature, then in the sample Add acetone to make the mass percent concentration of polycaprolactone (PCL) in acetone reach 16%.

[0105] When preparing polyethyloxazoline (PEOz), polyoxyethylene (PEO), and polyvinylpyrrolidone (PVP) solutions, take the same steps a...

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Abstract

The invention discloses polymer electrospun fibers, which comprise the following components in percentage by mass: 80 to 100 percent of polymer and 0 to 20 percent of pH regulator, wherein the polymer is a hydrophilic polymer and/or slightly hydrophilic polymer. The fibers have better liquid absorptivity than the traditional fibers and can be widely used. The preparation method is simple in operation, can be adjusted according to actual needs and is suitable for industrial production. The invention also discloses a medicinal compound or fiber dressing prepared by using the polymer electrospun fibers, and the medicinal compound or the fiber dressing can be directly used for treating wounds and/or protecting the wounded from pollution. Compared with the traditional dressing, the medicinal compound or the fiber dressing have the advantages of reducing pains in the wounded, along with convenient removal.

Description

technical field [0001] The invention relates to the technical field of preparing polymer electrostatic spinning fibers by using electrostatic spinning technology, in particular to a polymer electrostatic spinning fiber and its preparation method and its application in the preparation of medical composites. Background technique [0002] There have been some patent reports and laboratory studies on electrospinning technology. In the process of electrospinning, an electric field is first formed on the surface of the liquid, and when the force of the electric field acts on the surface of the liquid, a charged liquid jet will be generated on the surface of the liquid. A liquid jet is stretched by being attracted to oppositely charged substances with the right electrical potential. As the liquid jet is stretched, it dries and solidifies, creating fibers. The stretched liquid jet can be solidified and dried by physical solidification such as cooling of the liquid, evaporation of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/94D01F6/52D01F6/56D01F6/92D01F8/14D01F8/16D01F8/10D01F1/10D01D5/00A61L15/22
Inventor 霍平胡杰孙朝辉张林
Owner ZHEJIANG UNIV
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