A method of preparing a polyaniline/silver nanometer material by a cladding manner

A technology of polyaniline and silver nanometers, which is applied in the field of preparation of polyaniline/silver nanomaterials by coating method, can solve the problems of reducing the conductivity of composite materials, and achieve the effect of improving conductivity, good water solubility and high conductivity

Inactive Publication Date: 2016-05-04
WENZHOU UNIVERSITY
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  • Abstract
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  • Application Information

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Problems solved by technology

On the pre-prepared polyaniline substrate, Xu et al. introduced three-dimensional nano-gold and nano-silver on the polyaniline substrate by reduction method and impregnation method, thereby preparing polyaniline / silver nanocomposites; but the nano-silver exposed to the polyaniline The outer surface is easily oxidized by exposure to air, thereby reducing the electrical conductivity of the composite material

Method used

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  • A method of preparing a polyaniline/silver nanometer material by a cladding manner

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Add 5mL of ethylene glycol into a three-necked round-bottomed flask, and add a magnetic stirrer to pass nitrogen to maintain airtightness; reflux at 150°C for 20min; then add 4mL of 0.2mol / L AgNO 3 Ethylene glycol solution and 80μL 20mmol / L NiCl 2 After the ethylene glycol solution is mixed, add it to the above ethylene glycol; then add 10ml10g / L polyvinyl alcohol (PVP) ethylene glycol solution within 10min, and react for 40min; after the reaction, the product is washed twice with acetone and absolute ethanol , and centrifuged, the resulting 100mg silver nanowires were dispersed in 10mL absolute ethanol for later use.

Embodiment 2

[0024] Add 10mL of ethylene glycol into a three-necked round-bottomed flask, and add a magnetic stirrer to pass through nitrogen to maintain airtightness; reflux at 160°C for 25min; then add 4mL of 0.3mol / L AgNO 3 Ethylene glycol solution and 80μL 30mmol / L NiCl 2 After the ethylene glycol solution is mixed, add it to the above ethylene glycol; then add 15ml of 10g / L polyvinyl alcohol (PVP) ethylene glycol solution within 15min, and react for 50min; after the reaction, the product is washed twice with acetone and absolute ethanol , and centrifuged, the resulting 120mg silver nanowires were dispersed in 10mL absolute ethanol for later use.

Embodiment 3

[0026] Add 20mL of ethylene glycol into a three-necked round-bottomed flask, and add a magnetic stirrer to pass nitrogen to maintain airtightness; reflux at 170°C for 30min; then add 4mL of 0.3mol / L AgNO 3 Ethylene glycol solution and 80μL 40mmol / L NiCl 2 After the ethylene glycol solution is mixed, add it to the above ethylene glycol; then add 20ml of 10g / L polyvinyl alcohol (PVP) ethylene glycol solution within 20min, and react for 60min; after the reaction, the product is washed twice with acetone and absolute ethanol , and centrifuged, the resulting 150mg silver nanowires were dispersed in 10mL absolute ethanol for later use.

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Abstract

The invention relates to a method of preparing a polyaniline / silver nanometer material by a cladding manner. The method includes (1) a step of preparing silver nanowires by adopting a polyol manner, and (2) a step of preparing the polyaniline / silver nano-material by an in-situ cladding manner, namely a step of mixing the silver nanowires with absolute alcohol, stirring, adding the mixture into a reactor, adding aniline, sodium dodecylbenzenesulfonate and hydrochloric acid, stirring at room temperature for 30-60 min, adding ammonium persulfate, stirring for 60-240 min, and subjecting a product to separation and purification to obtain the polyaniline / silver nanometer composite material. The doped polyaniline / silver nanometer composite material is prepared through the cladding manner by adopting a step-by-step reaction manner, thus improving electrical conductivity of the material and facilitating control of the cladding amount of the silver nanowires and morphology of the composite material. In addition, doped inorganic and organic acids facilitate improvement of water solubility and electrical conductivity of the composite material. The method allows the product to be good in electrical conductivity and water solubility and to meet industrialization requirements of the material and is beneficial to industrialization and application of the material.

Description

(1) Technical field [0001] The invention relates to a method for preparing polyaniline / silver nanometer material by coating method. (2) Background technology [0002] In recent years, the development of conductive polymers has been very rapid, and it is a very active interdisciplinary subject; among them, polyaniline has excellent characteristics, such as easy availability of raw materials, simple preparation, relatively stable, controllable conductivity, and unique electrochemical properties. and other advantages have received more and more attention. Many studies have shown that conductive polyaniline can be widely used in life medicine, gas detection, metal anticorrosion, electromagnetic shielding, antistatic, fuel cells, secondary batteries and supercapacitors, and ultra-high-density information storage and other fields. Nowadays, facing the technical and environmental protection requirements of new materials, the research hotspots of polyaniline mainly focus on how to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C08K7/06
CPCC08G73/0266C08K7/06
Inventor 邰玉蕾晁国库周永强林大杰赵亚娟张伟禄
Owner WENZHOU UNIVERSITY
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