Unlock instant, AI-driven research and patent intelligence for your innovation.

Electrospun polyaniline/cellulose conductive composite film and its preparation method and application

A technology of electrospinning and polyaniline, applied in textiles, papermaking, non-woven fabrics, etc., can solve problems such as insufficient strength and poor bonding performance of composite materials, and achieve high Young's modulus, high-efficiency production, and simple preparation methods Effect

Active Publication Date: 2019-12-10
SOUTH CHINA UNIV OF TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, the construction of polyaniline / cellulose composite materials was simply immersing the cellulose paper base in polyaniline solution, and the resulting composite materials had poor bonding properties and insufficient strength.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A method for preparing polyaniline / cellulose conductive composite film by electrospinning, comprising the following steps:

[0041] (1) Sodium hydroxide, urea and deionized water are added in the 500ml beaker, form 350g sodium hydroxide / urea aqueous solution as solvent; The massfraction of sodium hydroxide in the gained solvent (sodium hydroxide / urea aqueous solution) is 5% , the mass fraction of urea is 5%;

[0042] (2) Place the above-mentioned sodium hydroxide / urea aqueous solution in a low-temperature cooling circulation pump to pre-cool to -7°C, add 1% (the absolute dry weight of the slurry relative to the percentage of the solvent mass) of coniferous wood to dissolve in the solution Pulp (supplied by Sun Paper). Use a high-speed dispersing homogenizer to stir at 1000r / min for 1min to form a cellulose solution;

[0043] (3) Slowly add 1% (the mass of phosphate-doped polyaniline relative to the percentage of solvent mass) phosphate-doped polyaniline solution (Appl...

Embodiment 2

[0046] A method for preparing polyaniline / cellulose conductive composite film by electrospinning, comprising the following steps:

[0047] (1) Add sodium hydroxide, urea and deionized water into a 500ml beaker to form 350g sodium hydroxide / urea aqueous solution as a solvent; the mass fraction of sodium hydroxide in the obtained solvent is 8%, and the mass fraction of urea is 9%;

[0048] (2) Place the above-mentioned sodium hydroxide / urea aqueous solution in a low-temperature cooling circulation pump to pre-cool to -10°C, add 3% (the absolute dry weight of the slurry relative to the percentage of the solvent mass) of coniferous wood to dissolve in the solution Pulp (supplied by Sun Paper). Use a high-speed dispersing homogenizer to stir at 4000r / min for 3 minutes to form a cellulose solution;

[0049](3) At -10°C, slowly add 3% (the mass of phosphate-doped polyaniline relative to the percentage of solvent mass) phosphate-doped polyaniline solution (Applied in Changchun, Chine...

Embodiment 3

[0052] A method for preparing polyaniline / cellulose conductive composite film by electrospinning, comprising the following steps:

[0053] (1) Add sodium hydroxide, urea and deionized water into a 500ml beaker to form 350g sodium hydroxide / urea aqueous solution as a solvent; the mass fraction of sodium hydroxide in the obtained solvent is 8%, and the mass fraction of urea is 12%;

[0054] (2) Place the above-mentioned sodium hydroxide / urea aqueous solution in a low-temperature cooling circulation pump to pre-cool to -12°C, add 5% (the absolute dry amount of the slurry relative to the percentage of the solvent mass) of coniferous wood to dissolve in the solution Pulp (supplied by Sun Paper). Use a high-speed dispersing homogenizer to stir at 6000r / min for 6min to form a cellulose solution;

[0055] (3) At -12°C, slowly add 5% (the mass of phosphate-doped polyaniline relative to the percentage of solvent mass) phosphate-doped polyaniline solution (Applied in Changchun, Chinese ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an electrostatic spinning polyaniline / cellulose conductive composite film and a preparation method and an application thereof. The preparation method comprises the steps that 1, sodium hydroxide, urea and water are mixed, and a sodium hydroxide / urea aqueous solution is obtained; 2, the sodium hydroxide / urea aqueous solution obtained in the step 1 is precooled to (-5)-(-15) DEG C, then a sizing agent is added to the solution, stirred and dissolved, and a cellulose solution is obtained; 3, under the condition of (-5)-(-15) DEG C, a polyaniline solution with doped organic phosphate and a bonding agent are added to the cellulose solution obtained in the step 2 and are stirred evenly, and a polyaniline / cellulose solution is obtained; 4, the polyaniline / cellulose solution obtained in the step 3 is subjected to electrostatic spinning, and the electrostatic spinning polyaniline / cellulose conductive composite film is obtained. The prepared composite film is large in specific surface area and good in mechanical property and conductivity, can be widely applied to the fields such as conductive materials, anti-electrostatic materials, battery shielding materials and piezoelectric sensors.

Description

technical field [0001] The invention belongs to the field of functional materials, and in particular relates to an electrospun polyaniline / cellulose conductive composite film and its preparation method and application. Background technique [0002] With the gradual depletion of non-renewable resources such as coal, oil, and natural gas and the increasingly serious environmental problems such as "white pollution", science and technology have tended to study renewable, environmentally friendly and sustainable functional materials. Cellulose is the most abundant and easily available renewable and degradable resource on earth, and the study of cellulose-based functional materials has broad application prospects. Due to the large number of hydrogen bonds distributed in the cellulose skeleton structure, the direct processing of cellulose becomes extremely difficult. The team of Zhang Lina of Wuhan University developed a set of alkali / urea system that dissolves cellulose quickly a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): D04H3/005D04H3/03D04H3/12
CPCD04H3/005D04H3/03D04H3/12D10B2201/22D10B2331/00D10B2401/16
Inventor 杨飞汤吕桥冯郁成
Owner SOUTH CHINA UNIV OF TECH