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Preparation method and application of bionic multi-component fiber

A multi-component fiber and bionic technology is applied in the field of preparation of bionic multi-component fibers to achieve the effects of convenient assembly and manipulation, good mechanical and electrical properties, and low cost

Active Publication Date: 2020-08-04
NANJING DRUM TOWER HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fabrication of fibrous flexible electronics using microfluidic spinning technology remains to be developed

Method used

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  • Preparation method and application of bionic multi-component fiber
  • Preparation method and application of bionic multi-component fiber
  • Preparation method and application of bionic multi-component fiber

Examples

Experimental program
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preparation example Construction

[0030] The preparation method of the described bionic multi-component fiber, its preparation comprises the following steps:

[0031] (1) Preparation of a multi-component microfluidic device: by coaxially assembling several tapered capillaries into the mesophase capillary as the shell precursor solution channel as the core fluid channel, and then all the capillaries are axially inserted into the outer phase collection capillary of the fluid channel for the solidified shell precursor solution;

[0032] (2) Prepare a core solution with good electrical properties for preparing the inner core layer, a shell precursor solution with good mechanical properties for preparing the shell layer, and a curing solution for curing the shell precursor solution; pass into step (1) respectively In several capillary inner core fluid channels, interphase capillary fluid channels and outer phase collection capillary fluid channels, and make all the fluids flow in the same direction;

[0033] (3) A...

Embodiment 1

[0043] The preparation of embodiment 1 biomimetic multi-component fiber

[0044] (1) Preparation of multi-component microfluidic spinning device:

[0045]according to figure 2 The schematic diagram of the structure of the microfluidic device is given. A plurality of internal phase capillary channels, intermediate phase capillary channels and external phase collection tube channels are coaxially assembled and connected to the liquid inlet devices of each phase.

[0046] (2) Configure related solutions

[0047] Choose the internal phase solution to be 1:1 mixed with 0.15wt% single-walled carbon nanotube aqueous dispersion liquid of 10% polyvinyl alcohol (PVA), the middle phase is the polyurethane / dimethylformamide of mass volume ratio 1:5 ( PU / DMF) solution, the outer phase collection liquid is alcohol solution.

[0048] (3) Connect the internal phase, intermediate phase, and external phase solutions obtained by the configuration to the syringes of each phase and the syringe...

Embodiment 2

[0049] Example 2 Morphological control of bionic multi-component fibers

[0050] A microfluidic device with dual internal capillaries was selected, and the inner diameters of the internal capillaries were determined to be 100 μm and 140 μm. During the fiber preparation process, by adjusting the flow rate of the internal phase CNTs solution or the flow rate of the intermediate phase PU solution, the change of the fiber wall thickness can be measured in real time in the online observation device, and the precise control of the fiber wall thickness can be realized, such as Figure 4 shown.

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Abstract

The invention relates to a preparation method and application of a bionic multi-component fiber. The bionic multi-component fiber comprises an outer shell layer and a multi-inner-core layer. The outershell layer is composed of a biological material excellent in mechanical performance. The multi-inner-core layer is composed of a biological material excellent in electrical performance, so that thetensile property and electrical property of the bionic multi-component fiber are guaranteed; the tensile property and electrical property of the bionic multi-component fiber are precisely adjusted bycontrolling the number of inner cores and the thickness proportion of a shell and the inner cores; and the shell and the multi-inner-core layer are prepared through a multi-component microfluidic technology. The multi-component fiber has good mechanical performance and electrical performance, and the preparation method for microfluidic spinning has the advantages of being low in cost, convenient to assemble and control, safe, reliable and capable of precisely controlling the fiber morphology. The application of the prepared bionic multi-component fiber on the aspect of flexible electronics isprovided, the bionic multi-component fiber has good electrical performance, shows good flexibility and cyclicity, and is high in applicability.

Description

technical field [0001] The invention relates to the field of biological materials, in particular to a preparation method and application of a bionic multi-component fiber. Background technique [0002] As an emerging technology, flexible electronics has the characteristics of wearability and portability, and has been applied to all aspects of human society. In order to adapt to the rapid development of flexible electronics, a variety of energy storage devices with sufficient energy density and long cycle life, such as supercapacitors, are being extensively researched and developed. Currently, fiber-like flexible electronics are considered to be the most promising development trend due to their advantages of light weight, good flexibility, and low cost. However, the current preparation strategies for these fibrous flexible electronics are mainly based on multi-step coating or manual stranding, which are usually complicated, time-consuming and labor-intensive, and cannot be p...

Claims

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Application Information

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IPC IPC(8): D01D5/34D01D1/09D01F8/16D01F8/10D01F8/18D01F1/09H01G11/00
CPCD01D1/09D01D5/34D01F1/09D01F8/10D01F8/16D01F8/18H01G11/00
Inventor 赵远锦郭佳慧王月桐
Owner NANJING DRUM TOWER HOSPITAL
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