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Template method manufacturing method of patterned electrostatic spinning fiber assembly

A fiber aggregate, electrospinning technology, applied in electrospinning, fiber processing, fiber chemical characteristics, etc., can solve the problems of difficult removal and inability to precisely control fiber deposition, etc.

Pending Publication Date: 2020-10-27
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a template method for preparing patterned electrospun fiber aggregates, which overcomes the existing problem that the deposition of fibers cannot be precisely controlled, and at least a part of the resulting patterned fiber structure has disordered three-dimensional Fibrous structure and non-removable defects

Method used

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  • Template method manufacturing method of patterned electrostatic spinning fiber assembly
  • Template method manufacturing method of patterned electrostatic spinning fiber assembly
  • Template method manufacturing method of patterned electrostatic spinning fiber assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Dissolve 4g of polystyrene in 10ml of N,N-dimethylformamide and 10ml of tetrahydrofuran in a mixed solvent, stir magnetically for 8 hours until completely dissolved, and obtain polystyrene spinning with a concentration of 20% (W / V, g / ml). silk liquid. Select a 10ml syringe with a needle with an inner diameter of 0.25mm, and fix the syringe for drawing 4ml of polystyrene spinning solution on the syringe pump. Electrospinning process parameters are: voltage 11kV, injection pump flow rate 1.2ml / h, receiving distance 18cm, ambient temperature 25°C, and ambient relative humidity 50%. Using an insulating polyester receiving substrate and a conductive backplane with a letter "DHU" pattern, the conductivity of the conductive backplane is 3.77×10 3 S / m, it needs to be grounded to form an electrostatic field, and finally a fiber aggregate with a "DHU" pattern is obtained on a polyester receiving substrate. Such as figure 1 As shown, a patterned fiber assembly was obtained usi...

Embodiment 2

[0043] Dissolve 4 g of polystyrene in 10 ml of N,N-dimethylformamide and 10 ml of tetrahydrofuran mixed solvent, and magnetically stir for 8 hours until completely dissolved to obtain a polystyrene spinning solution with a concentration of 20% (W / V). Select a 10ml syringe with a needle with an inner diameter of 0.25mm, and fix the syringe for drawing 4ml of polystyrene spinning solution on the syringe pump. Electrospinning process parameters are: voltage 11kV, injection pump flow rate 1.2ml / h, receiving distance 18cm, ambient temperature 25°C, and ambient relative humidity 50%. Figure 6 The composite template is used as the receiving device, where a is the grounding point of the conductive aluminum foil, b is the smooth insulating polyester receiving substrate, and c is the conductive patterned aluminum foil paper backing board. Figure 7 a is based on Figure 6 The physical picture of the "mouth" patterned fiber assembly obtained for the receiving device, Figure 7 b is a ...

Embodiment 3

[0045] Dissolve 4g of polystyrene and 0.4g of cellulose acetate in 10ml of N,N-dimethylformamide and 10ml of tetrahydrofuran mixed solvent, and magnetically stir for 8h until completely dissolved to obtain polystyrene-cellulose acetate mixed spinning solution. Select a 10ml syringe, a needle with an inner diameter of 0.25mm, draw out a syringe of 4ml of the mixed spinning solution and fix it on the syringe pump. Electrospinning process parameters are: voltage 11kV, injection pump flow rate 1.2ml / h, receiving distance 18cm, ambient temperature 25°C, and ambient relative humidity 50%. Such as Figure 9 The composite template is shown as the receiving device, where a is the smooth insulating polyester receiving substrate, b is the grounding part of the conductive aluminum foil, and c is the back plate of the conductive patterned aluminum foil paper. Such as Figure 10 shown in Figure 9 Physical image of the "DHU" patterned fiber assembly obtained for the receiving device. F...

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Abstract

The invention relates to a template method manufacturing method of a patterned electrostatic spinning fiber assembly. The method comprises the steps that a polymer spinning solution is processed to form a micro-nano fiber assembly through an electrostatic spinning method, and the patterned fiber assembly is fixed and received by a composite receiving template. The composite template comprises an insulation receiving substrate and a conductive pattern back bottom plate. The insulation receiving substrate and the conductive pattern back bottom plate are closely attached, the insulation receivingsubstrate is used for depositing and collecting patterned fibers, and the conductive pattern back bottom plate is used for conducting induction to form the patterned fiber assembly. The manufacturingmethod is simple, efficient and controllable, the pattern template is easy to process and design and can be recycled, and a manufactured fibrous membrane is fine in pattern, easy to uncover and goodin repeatability and has the wide application prospect in the fields of textile processing, electronic devices, biomedicine and the like.

Description

technical field [0001] The invention belongs to the field of preparation of micro-nano fiber aggregates, in particular to a template method for preparing patterned electrospinning fiber aggregates. Background technique [0002] The micro-nano scaling of materials is a hot research topic at present, and electrospinning technology, as a very mature method for continuous preparation of micro-nano fiber materials, has been fully developed. As a tool for micro-nano scaling of materials, it can make fibrous materials have the characteristics of high specific surface area, surface interface effect, quantum size effect and flexibility and plasticity. The electrospinning method can make high-performance and multi-functional materials in a multi-dimensional manner and is widely used in the fields of biomedicine, separation and filtration, intelligent sensing, and reaction catalysis. It has great potential application value in energy and power. However, it is well known that electros...

Claims

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Application Information

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IPC IPC(8): D01D5/00D01F6/42
CPCD01D5/003D01D5/0076D01F6/42
Inventor 王荣武熊成东王黎明俞金林覃小红俞建勇
Owner DONGHUA UNIV
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