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Method for preparing anisotropic multifunctional fibers by utilizing gas

An anisotropic and multifunctional technology that is used in fiber processing, fiber chemical characterization, rayon manufacturing, etc. to achieve high-efficiency devices and small fiber diameters

Inactive Publication Date: 2020-09-15
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Meanwhile, the development of new methods and the synthesis of multifaceted heterotropic fibers remain a challenging task.

Method used

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  • Method for preparing anisotropic multifunctional fibers by utilizing gas
  • Method for preparing anisotropic multifunctional fibers by utilizing gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: Preparation of double-sided anisotropic multifunctional fibers:

[0031] 1. Assembly and preparation of the microneedle device

[0032] Select three types of dispensing machine needles with appropriate specifications as core needles, shell needles and gas input needles respectively. The number of core needles is two. First, use the modified acrylate adhesive to align the two core needles side by side and fix them together. Then use the modified acrylate adhesive to fix the core shell needles in the shell needles. Make sure that the relative position of the core shell needles is Coaxial structure, and finally a hole is made at the entrance of the upper end of the shell needle, and a needle is connected as a gas channel.

[0033] 2. Construction and connection of microfluidic equipment and gas-assisted devices

[0034] First fix the syringe on the digital pump, connect the above-mentioned prepared silicone tube and the self-made microneedle device, and the...

Embodiment 2

[0041] Example 2: Preparation of four-sided anisotropic multifunctional fiber

[0042] 1. Combination and preparation of dispenser needles

[0043] Select three types of dispensing machine needles with appropriate specifications as core needles, shell needles and gas input needles respectively. The number of core needles is four. First, the four core needles are reinforced with a combination of modified acrylate adhesives to form a symmetrical structure. They are inserted into the shell needles and fixed with modified acrylate adhesive. Make sure that the relative positions of the core shell needles are the same. Shaft structure, and finally a hole is made at the entrance of the upper end of the shell needle, and a needle is connected as a gas channel.

[0044] 2. Construction and connection of microfluidic equipment and gas-assisted devices

[0045] First fix the syringe on the digital pump, connect the above-mentioned prepared silicone tube and the self-made microneedle de...

Embodiment 3

[0053] Example 3: Preparation of ten-sided anisotropic multifunctional fibers

[0054] 1. Combination and preparation of dispenser needles

[0055] Select three types of dispensing machine needles with appropriate specifications, which are core needles, shell needles and gas input needles. The number of core needles is ten. First, the ten core needles are reinforced with a combination of modified acrylate adhesives to form a circular symmetrical structure. They are inserted into the shell needles and fixed with modified acrylic adhesive. Be sure to ensure the relative position of the core shell needles It is a coaxial structure, and finally a hole is made at the entrance of the upper end of the shell needle, and a needle is connected as a gas channel.

[0056] 2. Construction and connection of microfluidic equipment and gas-assisted devices

[0057] First fix the syringe on the digital pump, connect the above-mentioned prepared silicone tube and the self-made microneedle dev...

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PUM

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Abstract

The invention provides a method and device for preparing anisotropic multifunctional fibers by utilizing gas for assistance. The anisotropic multifunctional fibers with different surface numbers can be obtained by changing the number of channels. In addition, the method for preparing the anisotropic fibers by using a gas auxiliary device is also very simple. The method comprises the steps: firstly, adding nanoparticles with a certain concentration into a prepared polymer solution, fully vibrating or ultrasonically uniformly mixing, then introducing the prepared polymer solution into a microfluidic device, finally pushing the polymer solution into a silicone tube to a core needle head by using a digital pump, and introducing gas to blow the polymer solution out of a jet flow to obtain the target fibers. In the method provided by the invention, high-voltage electricity does not need to be adopted, the method is green and efficient, the adopted device is simple and easy to assemble, and adopted materials are pollution-free degradable materials.

Description

technical field [0001] The invention belongs to the field of macromolecular functions, and in particular relates to a method for preparing multifunctional fibers with different orientations in a gas-assisted manner. Background technique [0002] Janus is a god with two faces (two-faced god) in ancient Roman mythology. It is a term used to indicate that matter has two different properties at the same time. It was first proposed by Degennes in his Nobel Prize-winning speech in 1991. With the continuous development of science and technology, from microspheres to fibers, people's research on Janus substances has become more and more extensive. At the same time, since it is difficult or impossible to realize the intelligent release of multiple drugs and the needs of being used as a tissue scaffold and a three-dimensional carrier for cell culture, the demand for anisotropic fibers is increasing, and anisotropic fibers The preparation of is also attracting more and more attention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/10D01F1/10D01D5/34
CPCD01F8/10D01F1/10D01D5/34
Inventor 黄超伯陈龙唐国胜吕丹高淑婷曲清莉崔佳欣
Owner NANJING FORESTRY UNIV