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Aniline/2,3-dimethylaniline copolymer

A technology of dimethylaniline and copolymers, which is applied in the field of copolymers, can solve the problems of low electrical conductivity of products, and achieve the effects of simple operation, convenient source of raw materials, and mild reaction conditions

Inactive Publication Date: 2011-11-23
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the application of poly 2,3-dimethylaniline mainly focuses on electrochemical sensors, but the conductivity of the prepared product is extremely low, which is not conducive to the application in other electronic fields, such as: Anjali et al. studied poly 2, The application of 3-dimethylaniline in the fatty alcohol sensor, but the resistance value of the poly-2,3-dimethylaniline prepared by it is between 10 6 Ω (Polyaniline and its substituted derivatives as sensor for aliphatic alcohols[J].Sensors and Actuators B, 2000, 67: 173-177); Milind et al. prepared poly-2,3-dimethyl Aniline (Poly(2,3-dimethylaniline) as a competent material for humidity sensor. Journal of Applied Polymer Science, 2001, 81:1382-1387) has a sensing effect on the relative humidity of the air, but the prepared poly-2 , the resistance of 3-dimethylaniline is 10 7 The magnitude of Ω has entered the range of insulating state

Method used

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  • Aniline/2,3-dimethylaniline copolymer

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0020] Add 50ml of distilled water and 0.023mol of concentrated hydrochloric acid into the reactor, stir to mix evenly; add 0.008mol of aniline and 0.004mol of 2,3-dimethylaniline, stir to mix evenly; weigh 0.01mol of ammonium persulfate and dissolve in 25ml of distilled water, add the obtained ammonium persulfate solution dropwise into the reactor, and react at room temperature for 2 hours; filter with suction, wash the filter cake with distilled water until the filtrate is colorless; dry the filter cake at 60°C for 6 hours, take it out and grind it, and obtain Aniline / 2,3-Dimethylaniline Copolymer. The conductivity measured by a four-probe conductivity meter is 0.0078S / cm.

[0021]

experiment example 2

[0023] Add 50ml of distilled water and 0.089mol concentrated hydrochloric acid into the reactor, stir to mix evenly; add 0.016mol aniline and 0.004mol 2,3-dimethylaniline, stir to mix evenly; weigh 0.025mol ammonium persulfate and dissolve in 25ml of distilled water, add the obtained ammonium persulfate solution dropwise into the reactor, and react at room temperature for 10 hours; filter with suction, wash the filter cake with distilled water until the filtrate is colorless; dry the filter cake at 60°C for 8 hours, take it out and grind it to obtain Aniline / 2,3-Dimethylaniline Copolymer. The conductivity was measured with a four-probe conductivity meter to be 0.15 S / cm.

[0024]

experiment example 3

[0026] Add 50ml of distilled water and 0.22mol concentrated hydrochloric acid into the reactor, stir to mix evenly; add 0.004mol aniline and 0.016mol 2,3-dimethylaniline, stir to mix evenly; weigh 0.05mol ammonium persulfate and dissolve in 25ml of distilled water, add the obtained ammonium persulfate solution into the reactor, and react at room temperature for 12 hours; filter with suction, wash the filter cake with distilled water until the filtrate is colorless; dry the filter cake at 60°C for 12 hours, take it out and grind it, and obtain aniline / 2,3-Dimethylaniline copolymer. The conductivity measured by a four-probe conductivity meter is 0.00057S / cm.

[0027] As can be seen from the accompanying drawings and Examples, the aniline / 2,3-dimethylaniline copolymer provided by the invention effectively solves the problem of poor electrical conductivity of poly-2,3-dimethylaniline, and its conductivity can reach 0.15S / cm, it is expected to be used in electronic components, e...

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Abstract

The invention relates to an aniline / 2,3-dimethylaniline copolymer. The aniline / 2,3-dimethylaniline copolymer is synthesized through a chemical oxidation method comprising the following steps of: adding distilled water, concentrated hydrochloric acid, aniline and 2,3-dimethylaniline to a vessel, and stirring for uniform mixing; dissolving an oxidant into the distilled water, and adding to a reaction system; after reaction is completed, carrying out extraction filtration, washing, drying, and grinding. The prepared aniline / 2,3-dimethylaniline copolymer disclosed by the invention achieves the conductivity at 0.15 S / cm, thereby outstandingly enhancing the conductive property of poly-2,3-dimethylaniline.

Description

technical field [0001] The invention belongs to copolymers, in particular to an aniline / 2,3-dimethylaniline copolymer. [0002] Background technique [0003] Poly 2,3-dimethylaniline is one of the more important polyaniline ring-substituted derivatives. The two electron-donating substituents (methyl groups) on its molecule can make the polymerization reaction easier. At the same time, due to steric hindrance The existence of this effect improves the solubility and processability of the resulting polymer. At present, the application of poly 2,3-dimethylaniline mainly focuses on electrochemical sensors, but the conductivity of the prepared product is extremely low, which is not conducive to the application in other electronic fields, such as: Anjali et al. studied poly 2, The application of 3-dimethylaniline in the fatty alcohol sensor, but the resistance value of the poly-2,3-dimethylaniline prepared by it is between 10 6 Ω (Polyaniline and its substituted derivatives as s...

Claims

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Application Information

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IPC IPC(8): C08G73/02
Inventor 马利甘孟瑜梁卫朝严俊单洪亮任纪纲
Owner CHONGQING UNIV
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