Method using emulsion electricity texture to prepare beaded filaments

An emulsion and bead-like technology, which is applied in the field of emulsion electrospinning to prepare bead-like fibers, achieves the effect of mild conditions, great application prospects, and simple and fast preparation process

Inactive Publication Date: 2013-02-13
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing beaded fibers by emulsion electrospinnin

Method used

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  • Method using emulsion electricity texture to prepare beaded filaments
  • Method using emulsion electricity texture to prepare beaded filaments
  • Method using emulsion electricity texture to prepare beaded filaments

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Preparation of polystyrene emulsion with a solid content of 25 wt%:

[0023] Add 1.2 g of sodium lauryl sulfate, 0.018 g of sodium bicarbonate and 180 g of deionized water into a 500 mL four-neck flask equipped with a magnetic stirrer, reflux condenser and thermometer, and stir and mix well. Add 60 g of styrene monomer under stirring, feed nitrogen into the reaction system of the vessel to exhaust the oxygen, heat the temperature of the reaction system to 70°C, add 0.18 g of potassium persulfate (dissolved In 20 g of deionized water), the polymerization was initiated. After 3 h of polymerization, the reaction was stopped and cooled naturally to obtain a polystyrene emulsion with a solid content of 25 wt%.

[0024] (2) Take an appropriate amount of the prepared polystyrene emulsion in an Erlenmeyer flask, add dropwise a poloxamer surfactant of 3 wt% relative to the mass of polystyrene under magnetic stirring, mix well, and mix with PS / PVA PVA solution (10 wt%) was a...

Embodiment 2

[0027] (1) Preparation of polystyrene emulsion with a solid content of 25 wt%:

[0028] Add 1.2 g of sodium lauryl sulfate, 0.018 g of sodium bicarbonate and 180 g of deionized water into a 500 mL four-neck flask equipped with a magnetic stirrer, reflux condenser and thermometer, and stir and mix well. Add 60 g of styrene monomer under stirring, feed nitrogen into the reaction system of the vessel to exhaust the oxygen, heat the temperature of the reaction system to 70°C, add 0.18 g of potassium persulfate (dissolved In 20 g of deionized water), the polymerization was initiated. After 3 h of polymerization, the reaction was stopped and cooled naturally to obtain a polystyrene emulsion with a solid content of 25 wt%.

[0029] (2) Take an appropriate amount of the prepared polystyrene emulsion in an Erlenmeyer flask, add 5 wt% poloxamer surfactant to the mass of polystyrene dropwise under magnetic stirring, mix well, and mix with PS / PVA PVA solution (10 wt%) was added dropwise ...

Embodiment 3

[0032] (1) Preparation of polystyrene emulsion with a solid content of 25 wt%:

[0033] Add 1.2 g of sodium lauryl sulfate, 0.018 g of sodium bicarbonate and 180 g of deionized water into a 500 mL four-neck flask equipped with a magnetic stirrer, reflux condenser and thermometer, and stir and mix well. Add 60 g of styrene monomer under stirring, feed nitrogen into the reaction system of the vessel to exhaust the oxygen, heat the temperature of the reaction system to 70°C, add 0.18 g of potassium persulfate (dissolved In 20 g of deionized water), the polymerization was initiated. After 3 h of polymerization, the reaction was stopped and cooled naturally to obtain a polystyrene emulsion with a solid content of 25 wt%.

[0034] (2) Take an appropriate amount of the prepared polystyrene emulsion in an Erlenmeyer flask, add dropwise a poloxamer surfactant of 7 wt% relative to the mass of polystyrene under magnetic stirring, mix well, and mix with PS / PVA PVA solution (10 wt%) was a...

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Abstract

The invention provides a method using emulsion electricity texture to prepare beaded filaments. The method specifically comprises the following steps of using emulsion polymerization method to prepare polymer emulsion, preparing spinning emulsion dispersion liquid, using high voltage static spinning to process the emulsion dispersion liquid, collecting fiber through flat plates or drums and obtaining different-shaped micro nanometer fiber of beaded structure. Different-shaped fiber of the beaded structure can be prepared by changing emulsion dispersion liquid proportioning and spinning work parameters. The method using emulsion electricity texture to prepare beaded filaments is simple in structure, moderate in condition, environmental-protection and safe and easy to produce in large scale. Raw materials of the preparation method are easy to obtain. The method uses the emulsion electricity spinning method to prepare beaded filament membranes which are super-hydrophilicity through water contact angle tests. The method is wide in application prospect in field of absorbent materials.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a method for preparing beaded fibers by emulsion electrospinning. Background technique [0002] Due to their high specific surface area, micro-nanofibers have high application value in the fields of biomedicine, tissue engineering, drug sustained release, and filtration and adsorption materials. Electrospinning technology is a simple and effective method to prepare micro-nanofibers. It uses a high-voltage power supply to charge the polymer solution, and is subjected to electrostatic force in the electrostatic field. When the static voltage exceeds the critical voltage, the electrostatic force overcomes the surface tension of the polymer solution, so that the jet is charged and moves toward the negative electrode in the electric field. Accompanied by solvent volatilization, the polymer jet is solidified and deposited on the collection device to form micro-n...

Claims

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Application Information

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IPC IPC(8): D01F6/56D01F1/10D01D1/02D01D5/00C08F112/08C08F2/26
Inventor 曹鼎杨丽霞石艳付志峰
Owner BEIJING UNIV OF CHEM TECH
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