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Shell core type Poly(3,4-ethylenedioxythiophene)/polyethelene alcohol fiber composite film and preparing method thereof

A technology of polyethylene dioxythiophene and polyvinyl alcohol fiber, which is applied in fiber processing, conjugated synthetic polymer rayon, chemical post-processing of synthetic polymer rayon, etc., can solve poor solubility, hinder composite and other problems, to achieve the effect of simple process, simple and easy method, and good electrical activity.

Inactive Publication Date: 2009-11-25
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Composites of PEDOT and biocompatible materials have great application prospects in the field of biosensors. However, due to the extremely poor solubility of PEDOT, it is greatly hindered from compositing with other materials.

Method used

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  • Shell core type Poly(3,4-ethylenedioxythiophene)/polyethelene alcohol fiber composite film and preparing method thereof
  • Shell core type Poly(3,4-ethylenedioxythiophene)/polyethelene alcohol fiber composite film and preparing method thereof
  • Shell core type Poly(3,4-ethylenedioxythiophene)/polyethelene alcohol fiber composite film and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: The degree of alcoholysis of PVA is 98mol%, and the degree of polymerization (n) is 1750±50.

[0019] Add 700 mg of PVA to 10 ml of deionized water, heat in an oil bath at 90°C for 2 hours to completely dissolve the PVA, and cool to room temperature to obtain an aqueous solution of PVA. Add 30 mg of SDS to the above solution, stir for 20 minutes to dissolve the SDS, then add 315 μL of EDOT monomer under stirring, ultrasonically disperse for 30 minutes, and finally stir at room temperature for 6 hours to obtain a uniform emulsion, which is electrospun for 24 hours . The spinning parameters are: voltage 11KV, flow rate 0.2mL / h, distance 15cm. Cut the spun film into a size of 1cm×1cm, put it into a gas collecting bottle filled with chlorine gas, and leave it sealed for 24 hours to obtain a light blue film.

[0020] The fibers obtained by electrospinning have a discontinuous core-shell spindle structure, and EDOT is located in the core layer of the spindle s...

Embodiment 2

[0022] Add 700 mg of PVA to 10 ml of deionized water, heat in an oil bath at 90°C for 2 hours to completely dissolve the PVA, and cool to room temperature to obtain an aqueous solution of PVA. Add 30 mg of SDS to the above solution, stir for 20 minutes to dissolve the SDS, then add 175 μL of EDOT monomer under stirring, ultrasonically disperse for 30 minutes, and finally stir at room temperature for 6 hours to obtain a uniform emulsion, which is electrospun for 24 hours . The spinning parameters are: voltage 11KV, flow rate 0.2mL / h, distance 15cm. Cut the spun film into a size of 1cm×1cm, put it into a gas collecting bottle filled with chlorine gas, and leave it sealed for 24 hours to obtain a light blue film.

[0023] The fibers obtained by electrospinning have a discontinuous core-shell spindle structure, and EDOT is located in the core layer of the spindle structure. The average diameter of the fiber is 350nm, the diameter of the core layer of the spindle structure is 680...

Embodiment 3

[0025] Add 700 mg of PVA to 10 ml of deionized water, heat in an oil bath at 90°C for 2 hours to completely dissolve the PVA, and cool to room temperature to obtain an aqueous solution of PVA. Add 30 mg of SDS to the above solution, stir for 20 minutes to dissolve the SDS, then add 245 μL of EDOT monomer under stirring, ultrasonically disperse for 30 minutes, and finally stir at room temperature for 6 hours to obtain a uniform emulsion, which is electrospun for 24 hours . The spinning parameters are: voltage 11KV, flow rate 0.2mL / h, distance 15cm. Cut the spun film into a size of 1cm×1cm, put it into a gas collecting bottle filled with chlorine gas, and leave it sealed for 24 hours to obtain a light blue film.

[0026] The fibers obtained by electrospinning have a discontinuous core-shell spindle structure, and EDOT is located in the core layer of the spindle structure. The average diameter of the fiber is 350nm, the diameter of the core layer of the spindle structure is 690...

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Abstract

The present invention relates to a shell core type Poly(3,4-ethylenedioxythiophene) / polyethelene alcohol fiber composite film, and a preparing method thereof. The preparing method comprises the following steps: preparing a polyvinyl alcohol water solution, adding sodium lauryl sulfate into the solution, finally adding ethylenedioxythiophene monomer, ultrasonic dispersing and then mixing for forming the homogeneous emulsion. The emulsion is executed with electrostatic spinning for obtaining the fiber with the uncontinuous shell core type spindle-shaped structure, wherein the ethylenedioxythiophene monomer is positioned at the core layer. The spinning film is placed into the chlorine for sealed-placing for 24h for polymerizing the ethylenedioxythiophene monomer of the core layer and obtaining the pale-blue film. The invention has the advantages of: simple and feasible method, realized polymerization in the nanometer reactor composed of spinning fiber shell layer, high concentration of PEDOT in the final film up to 45% (w / w PVA), and better electroactivity. Furthermore the shell core type Poly(3,4-ethylenedioxythiophene) / polyethelene alcohol fiber composite film of the invention is synthesized with the bioavailability of the PVA and is likely used for the field of biological sensor.

Description

technical field [0001] The invention relates to a core-shell type polyethylenedioxythiophene / polyvinyl alcohol fiber composite membrane and a preparation method thereof, specifically combining electrospinning and a nanoreactor to prepare a core-shell type polyethylenedioxythiophene / polyvinyl alcohol fiber composite membrane. Vinyl alcohol fiber composite film. Background technique [0002] The template method is a very important method for preparing polymer nanomaterials. The template method can also be called the nanoreactor polymerization method. At present, the materials used as nanoreactors or templates mainly include (reverse) microemulsions, porous materials and layered polymers. Among them, microemulsions and porous materials are used to prepare polymer nanomaterials, which require complex follow-up treatments such as demulsification and removal of porous templates (J.Joo, B.H.Kim and D.H.Park Synth.Met.1996 80 10) , layered silicates can only be used to prepare nano...

Claims

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Application Information

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IPC IPC(8): D04H3/16D01D5/34D01F8/10D01F11/04D01F8/16
Inventor 封伟许庆蕾侯闻婷
Owner TIANJIN UNIV
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