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Core-shell structure metal/polymer nanofiber and preparation method thereof

A nanofiber, core-shell structure technology, applied in the direction of conjugated synthetic polymer artificial filament, fiber treatment, fiber chemical characteristics, etc., can solve the problem of not being able to form nanofibers, achieve easy characterization, low equipment requirements, and promote reduction Effect

Inactive Publication Date: 2014-03-19
HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a content of metal particles is difficult to effectively endow fibers with better properties, nor can they form metal / polymer nanofibers with a core-shell structure

Method used

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  • Core-shell structure metal/polymer nanofiber and preparation method thereof
  • Core-shell structure metal/polymer nanofiber and preparation method thereof
  • Core-shell structure metal/polymer nanofiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) Dissolve polyvinylpyrrolidone (K90) powder with a weight-average molecular weight of 1,300,000 in ethanol solvent, and magnetically stir for 10 hours to prepare an 8wt% polyvinylpyrrolidone solution;

[0031] 2) dissolving silver nitrate in the polyvinylpyrrolidone solution in step 1), stirring magnetically for 2 hours, to prepare a spinning solution of 30wt% silver nitrate;

[0032] 3) Put the spinning solution in step 2) into the self-made solution supply device, adjust the receiving distance to 25cm, turn on the high voltage power supply, adjust the spinning voltage to 12KV, and control the flow rate to 0.2ml / h;

[0033] 4) Electrospinning experiments were carried out under dark conditions, and a metal / polymer nanofiber membrane with a core-shell structure was obtained on an aluminum foil collector. application value;

[0034] 5) The fiber membrane is subjected to heating or ultraviolet irradiation treatment to further promote the reduction of silver ions on the ...

Embodiment 2

[0036] 1) Configure a mixed solvent of ethanol / water=8 / 2 (w / w);

[0037] 2) Dissolve polyvinylpyrrolidone (K90) powder with a weight average molecular weight of 1,300,000 in the solvent of step 1), and stir magnetically for 12 hours to prepare a 10wt% polyvinylpyrrolidone solution;

[0038] 3) dissolving copper chloride in the polyvinylpyrrolidone solution in step 2), and magnetic stirring for 4 hours to prepare a spinning solution of 40wt% copper chloride;

[0039] 4) Put the spinning solution in step 3) into the self-made solution supply device, adjust the receiving distance to 30cm, turn on the high voltage power supply, adjust the spinning voltage to 15KV, and control the flow rate to 0.4ml / h;

[0040] 5) Electrospinning experiments were carried out under dark conditions, and a metal / polymer nanofiber membrane with a core-shell structure was obtained on an aluminum foil collector. application value;

[0041] 6) The fiber membrane is subjected to heating or ultraviolet ir...

Embodiment 3

[0043] 1) Dissolve polyvinyl alcohol powder with a weight average molecular weight of 180,000 in deionized water, and magnetically stir for 20 hours to make a 10wt% polyvinyl alcohol solution;

[0044] 2) Dissolve silver nitrate in the polyvinyl alcohol solution in step 1), add an appropriate amount of nitric acid, adjust the pH value to about 4, and magnetically stir for 10 hours to prepare a spinning solution of 30wt% silver nitrate;

[0045] 3) Put the spinning solution in step 2) into the self-made solution supply device, adjust the receiving distance to 25cm, turn on the high voltage power supply, adjust the spinning voltage to 15KV, and control the flow rate to 0.5ml / h;

[0046] 4) Electrospinning experiments were carried out under dark conditions, and a metal / polymer nanofiber membrane with a core-shell structure was obtained on an aluminum foil collector. application value;

[0047]5) The fiber membrane is subjected to heating or ultraviolet irradiation treatment to f...

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Abstract

The invention relates to a method for preparing a core-shell structure metal / polymer nanofiber membrane. The prepared fiber membrane uses a polymer as a nuclear layer and uses a nano-metal as a shell layer; the polymer can be polyvinyl pyrrolidone, polyvinyl alcohol, polyoxyethylene, polylactic acid, polyacrylonitrile, hyaluronic acid, chitosan and the like; the nano-metal shell layer comes from metal salt silver nitrate or copper chloride. The core-shell structure metal / polymer nanofiber is prepared by utilizing the electrospinning technique; by controlling the process parameters, the concentration of polymer, the content of metal salt and the proportioning of solvents, the metal / polymer nanofiber membrane is prepared; the fiber membrane has high application value on tissue engineering, recovery of wound, drug transportation, photoelectricity and the like.

Description

technical field [0001] The invention relates to a method for preparing metal / polymer nanofibers with a core-shell structure, which has broad research prospects in the fields of tissue engineering scaffolds, medical carriers, conductive nanomaterials, etc., and belongs to the field of preparation of functionalized nanofibers. Background technique [0002] Electrospinning is a convenient method to prepare nanofibers ranging from tens of nanometers to micrometers. The resulting non-woven fabric has a high specific surface area, about 1 to 100m 2 / g. Due to the size effect of nanomaterials, the resulting nanofibers can often obtain many new phenomena and properties. The electrospinning process equipment includes: an injection tube containing a polymer solution, two electrodes, and a DC electrostatic generator and receiver capable of providing voltages in the kilovolt range. In the electrospinning technology, the spinning solution is charged with high-voltage static electricit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/10D01F8/18D01F8/16D01F8/14D01F8/08D01D5/00
Inventor 马贵平姜程琳聂俊方大为杨冬芝
Owner HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH
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