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Polyaniline/thermoplastic polymer conductive nanofiber membrane and preparation method thereof

A technology of thermoplastic polymer and nanofiber membrane, which is applied in the direction of plant fiber, conjugated synthetic polymer artificial filament, fiber treatment, etc., can solve the problems of impenetrability, low electrical conductivity, poor order, etc., and achieve precise Structural design, the effect of meeting the requirements of electrical conductivity

Active Publication Date: 2021-10-26
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most polyanilines are only loaded on the surface of thermoplastic polymer nanofiber membranes in the form of coatings or films, and the electrical conductivity is low. Only a small number of polyanilines can grow on the surface of thermoplastic polymer nanofiber membranes in the form of fibers.
Literature (High Sensitivity AmmoniaSensor Using a Hierarchical Polyaniline / Poly(ethylene-co-glycidylmethacrylate.Nanofibrous Composite Membrane[J].ACS Appl.Mater.Interfaces2013,5,6473-6477.) through poly(ethylene-co-methacrylic acid Glycidyl ester) (PE-co-GMA) nanofiber surface in situ growth of uniform polyaniline prepared a layered structure of three-dimensional network nanofiber composite film, this method solves the problem The problem of growing polyaniline is that the polyaniline is in the form of nanorods with a short length (about 100nm), which cannot penetrate the pores of the nanofiber membrane, so that the polyaniline nanorods on the entire nanofiber membrane are connected to further enhance the conductivity. rate, and as the reaction time increases, the order of polyaniline nanorods becomes worse, and more nanorods pile up disorderly on the surface of the fiber membrane

Method used

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  • Polyaniline/thermoplastic polymer conductive nanofiber membrane and preparation method thereof
  • Polyaniline/thermoplastic polymer conductive nanofiber membrane and preparation method thereof
  • Polyaniline/thermoplastic polymer conductive nanofiber membrane and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] A preparation method of polyaniline / thermoplastic polymer conductive nanofiber film, the steps are as follows:

[0039] (1) The thermoplastic polymer nanofiber membrane (such as figure 1 (shown) was soaked in acidic solution I for 5 minutes, accompanied by ultrasonic treatment during the soaking, and the frequency of ultrasonic treatment was 35 Hz, followed by soaking in aniline for 2 minutes, standing still during soaking, soaking in ethanol again for 1 second, and taking it out quickly after soaking to obtain Thermoplastic polymer nanofiber film with uniform adsorption of aniline on the surface; the thermoplastic polymer is PBT;

[0040] The process of sea-island spinning is as follows: firstly, the thermoplastic polymer and CAB (cellulose acetate butyrate) are uniformly mixed at a mass ratio of 2:8, and melted and blended by a twin-screw extruder. The temperature of the twin-screw extruder is at 190-250°C, and then at 80°C, use acetone as a solvent to remove the mat...

Embodiment 2

[0050] A preparation method of polyaniline / thermoplastic polymer conductive nanofiber film, the steps are as follows:

[0051] (1) soak the thermoplastic polymer nanofiber membrane that adopts sea-island spinning method to make in the acidic solution I for 8min, accompany with ultrasonic treatment during soaking, the frequency of ultrasonic treatment is 35Hz, then soak in aniline for 3min, static during soaking place, soak again in ethanol for 1.2s, take it out quickly after soaking, and obtain a thermoplastic polymer nanofiber film with aniline evenly adsorbed on the surface; the thermoplastic polymer is PBT;

[0052] The process of sea-island spinning is as follows: firstly, the thermoplastic polymer and CAB are uniformly mixed at a mass ratio of 2:8, melted and blended by a twin-screw extruder, and the temperature of the twin-screw extruder is 190-250°C, and then At 80°C, use acetone as a solvent to remove the matrix phase CAB to obtain thermoplastic polymer nanofibers, and...

Embodiment 3

[0058] A preparation method of polyaniline / thermoplastic polymer conductive nanofiber film, the steps are as follows:

[0059] (1) soak the thermoplastic polymer nanofiber membrane prepared by sea-island spinning method in acidic solution I for 6 min, accompanied by ultrasonic treatment during soaking, the frequency of ultrasonic treatment is 35 Hz, followed by soaking in aniline for 4 min, static during soaking place, soak again in ethanol for 1.5s, take it out quickly after soaking, and obtain a thermoplastic polymer nanofiber film with uniform adsorption of aniline on the surface; the thermoplastic polymer is EVOH;

[0060] The process of sea-island spinning is as follows: firstly, the thermoplastic polymer and CAB are uniformly mixed at a mass ratio of 2:8, melted and blended by a twin-screw extruder, and the temperature of the twin-screw extruder is 190-250°C, and then At 80°C, use acetone as a solvent to remove the matrix phase CAB to obtain thermoplastic polymer nanofib...

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Abstract

The invention relates to a polyaniline / thermoplastic polymer conductive nanofiber film and a preparation method thereof. The preparation method comprises: a mixture of a thermoplastic polymer nanofiber film that uniformly adsorbs aniline to the surface, an acidic solution II and aniline (acidic solution II and aniline The volume ratio is 48:0.1~0.9) after adding the oxidant solution to obtain the reaction system, applying a certain voltage (1~4kV) electric field to the reaction system for a certain period of time to prepare the polyaniline / thermoplastic polymer conductive nanofiber film. The final polyaniline / thermoplastic polymer conductive nanofiber film is composed of thermoplastic polymer nanofiber film and polyaniline nanofibers (with an average length of 300-800nm); polyaniline nanofibers are mainly rooted on the surface of thermoplastic polymer nanofibers , grow along the direction perpendicular to the thermoplastic polymer nanofibers, and have an ordered structure. The preparation method of the invention is simple, and the electric conductivity of the prepared polyaniline / thermoplastic polymer conductive nanofiber film is 11.4-26.3mS / cm.

Description

technical field [0001] The invention belongs to the technical field of conductive nanofiber membranes, and relates to a polyaniline / thermoplastic polymer conductive nanofiber membrane and a preparation method thereof. Background technique [0002] Polyaniline has excellent properties such as high conductivity, good stability, fast response speed, and low working voltage. It is one of the most promising conductive polymer materials and has been applied in many new fields, such as exchange electrodes, secondary Batteries, gas sensitive materials, electrochromic displays, electronic equipment, sensors, electromagnetic shielding, antistatic and metal anticorrosion and other fields. [0003] At present, the synthesis methods of polyaniline mainly include electrochemical polymerization and chemical oxidation polymerization. The electrochemical method is only suitable for the synthesis of small batches of polyaniline, and the synthesis speed is slow. At the same time, the product ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/61D01F8/02D01F8/14D04H1/4291D04H1/4334D04H1/435D04H3/007D04H3/009D04H3/011D06M101/08D06M101/32
CPCD01F8/02D01F8/14D04H1/4291D04H1/4334D04H1/435D04H3/007D04H3/009D04H3/011D06M15/61D06M2101/08D06M2101/32
Inventor 肖茹宋炜陆建伟晏珊陈爽谢瑾瑜顾磊
Owner DONGHUA UNIV
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