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A kind of microfluidic spinning device and method

A spinning device and microfluidic technology, applied in the field of microfluidics, can solve problems such as poor mechanical properties of protein fibers

Active Publication Date: 2021-02-05
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional microfluidic spinning can only prepare simple fiber structures, and the obtained protein fibers have poor mechanical properties

Method used

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  • A kind of microfluidic spinning device and method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] exist figure 1 Microfluidic spinning is performed on the shown microfluidic spinning device, specifically:

[0063] The microfluidic spinning device includes:

[0064] Air guide microtube 2; described air guide microtube is a square glass microtube, the tube length of the square glass microtube is 4cm, the cross section of the square glass microtube is a square, the inner side length of the square is 1.05mm, and the outer side length 1.5mm;

[0065] The inlet of the air guide microtube 2 is connected to the gas outlet of the air pump 4 through a rubber tube, and the air valve 5 is arranged between the air guide microtube and the air pump to control the air guide microtube 2 inlets. gas flow rate;

[0066] The liquid guide microtube 1 arranged inside the air guide microtube 2, the liquid guide microtube 1 is a cylindrical glass microtube, the diameter of the liquid guide microtube is 0.96mm, and the liquid guide microtube The diameter of the outlet nozzle is 200μm; ...

Embodiment 2

[0073] The microfluidic spinning device includes:

[0074] Air guide microtube 2; described air guide microtube is a square glass microtube, the tube length of the square glass microtube is 4cm, the cross section of the square glass microtube is a square, the inner side length of the square is 1.05mm, and the outer side length 1.5mm;

[0075] The inlet of the air guide microtube 2 is connected to the gas outlet of the air pump 4 through a rubber tube, and the air valve 5 is arranged between the air guide microtube and the air pump to control the air guide microtube 2 inlets. gas flow rate;

[0076] The liquid guide microtube 1 arranged inside the air guide microtube 2, the liquid guide microtube 1 is a cylindrical glass microtube, the diameter of the liquid guide microtube is 0.96mm, and the liquid guide microtube The diameter of the outlet nozzle is 200μm;

[0077] The inlet of the liquid guide microtube 1 is connected to the outlet of the liquid injector 6 through a polye...

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Abstract

The present invention relates to the field of microfluidic technology, in particular to a microfluidic spinning device and method. The device includes: an air-conducting microtube; a liquid-conducting microtube and a fiber collection tube arranged inside the air-conducting microtube The fiber solution extruded from the outlet nozzle of the liquid guide microtube and part of the gas in the air guide microtube enter the fiber collection tube through the entrance of the fiber collection tube; the liquid guide microtube The inlet is connected with the liquid injector, and the inlet of the air guiding microtube is connected with the air pump. Squeeze out the fiber solution from the outlet nozzle of the liquid guide microtube, and the part of the gas entering the fiber collection tube forms the sheath gas of the fiber solution, and the fiber solution evaporates under the shear action of the sheath gas , the solute solidifies to form fibers in the fibrous collection tube. The fiber produced by the microfluidic spinning device provided by the invention has a smaller diameter and better mechanical properties.

Description

technical field [0001] The invention relates to the field of microfluidic technology, in particular to a microfluidic spinning device and method. Background technique [0002] High-strength fiber materials are widely used in military fields such as aerospace and weaponry and civilian fields such as automobile manufacturing, among which Kevlar, steel wire, and carbon fiber are the most typical. Although these materials have high Young's modulus and mechanical strength, their high density, poor ductility, low toughness, no biocompatibility, and non-degradability cannot meet people's higher requirements for materials. Biofiber has the advantages of low density, high mechanical strength, high toughness, excellent ductility, degradability and biocompatibility, etc. It is expected to become a new generation of lightweight and high-strength fiber materials, and it has become the focus of fierce competition around the world. [0003] Microfluidic technology can realize controllable...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/40
CPCD01D5/40
Inventor 刘凯张洪杰陈东杨晨静
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI