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Method for preparing intercalation nanocomposite material of polyaniline or polyaniline derivative, and inorganic clay by mechanochemical polymerization method

A technology of nanocomposite materials and aniline derivatives, which is applied in the field of intercalated nanocomposite materials, can solve the problems of difficulty in obtaining inorganic-organic compound, complex preparation process, etc., and achieves simple and easy preparation, simple process flow and high intercalation rate. Effect

Inactive Publication Date: 2013-08-28
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process is complicated, and it is difficult to obtain the composite of inorganic-organic substances on the nanometer scale

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1) Put the montmorillonite into a round-bottomed flask with a branch, vacuumize and fill with argon twice, add aniline equivalent to 0.05 times the weight of the montmorillonite with a syringe, and after magnetic stirring, coat the round-bottomed flask Tin foil paper, placed in the dark at room temperature for 24 hours to obtain a blended suspension;

[0016] 2) Grind the blended suspension with a mortar for 5 minutes, add ammonium persulfate, the molar ratio of ammonium persulfate and aniline is 1:10, during the grinding process, cover the mortar with a funnel, and argon gas flows through one end of the funnel, continue Grind for 0.5 hours until completely purple-black;

[0017] 3) After the reaction, wash with water and absolute ethanol respectively, filter, and vacuum-dry to constant weight to obtain a montmorillonite intercalation nanocomposite. The intercalation rate of the polyaniline in the montmorillonite is 99%.

Embodiment 2

[0019] 1) Put the kaolinite clay into a round-bottomed flask with a branch, vacuumize it and fill it with argon three times, add 2,5-dimethoxyaniline equivalent to 4.5 times the weight of the kaolinite clay, and stir it magnetically , the round-bottomed flask was covered with tinfoil, and placed in the dark at room temperature for 48 hours to obtain a blended suspension;

[0020] 2) Grind the blended suspension with a mortar for 10 minutes, add potassium dichromate, potassium dichromate and 2,5-dimethoxyaniline in a molar ratio of 3:2, cover with a funnel during the grinding process Mortar, argon at one end of the funnel, continue to grind for 1.2 hours, until completely purple-black;

[0021] 3) After the reaction, wash with water and absolute ethanol respectively, filter, and vacuum-dry to constant weight to obtain a kaolinite clay intercalation nanocomposite. The intercalation rate of the poly-2,5-dimethoxyaniline in kaolinite is 85%.

Embodiment 3

[0023] 1) Put the halloysite into a round-bottomed flask with a branch, vacuumize and fill it with argon for 3 times, add aniline equivalent to 0.5 times the weight of the halloysite with a syringe, stir magnetically to make it blend, and the round bottom Wrap the flask with tinfoil and store it at room temperature in the dark for 24 hours;

[0024] 2) Grind the blended suspension with a mortar for 5 minutes, add potassium persulfate, and the molar ratio of potassium persulfate and aniline is 1:1. During the grinding process, cover the mortar with a funnel, and argon gas flows through one end of the funnel, and continue Grinding, the grinding time is 0.5 hours, until it becomes completely purple-black;

[0025] 3) After the reaction, wash with water and absolute ethanol respectively, filter, and vacuum-dry to constant weight to obtain halloysite clay intercalation nanocomposites. The intercalation rate of polyaniline in halloysite is 90%.

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Abstract

The invention discloses an intercalation nanocomposite material of a polyaniline or a polyaniline derivative, and inorganic clay by mechanochemical polymerization method. The method comprises the following steps of: (1) placing inorganic clay into a round-bottom flask with a branch port, vacuum-pumping, fully filling with argon, adding aniline or an aniline derivative, wrapping a tin foil out of the round-bottom flask after magnetically stirring, and stewing out of light under normal temperature, to obtain a blending fluid suspension; (2) grinding the blending fluid suspension, adding an oxidizing agent, covering a mortar with a tunnel in a grinding process, introducing argon into one end of the tunnel, continuously grinding, until to become atropurpureus completely; and (3) washing after reaction, filtrating, and vacuum-drying until constant weight, to obtain the intercalation nanocomposite material of inorganic clay. The prepared nanocomposite not only makes polyaniline or the polyaniline derivative have good dispersibility and high mechanical strength, but also raises water solubility and processing temperature of polyaniline or the polyaniline derivative. The method has advantages of simple preparation method and high polymer intercalation rate, and has a practical application meaning.

Description

technical field [0001] The invention relates to a method for preparing intercalation nano composite material of polyaniline or polyaniline derivatives and inorganic clay by mechanochemical polymerization. Background technique [0002] Polyaniline is a common conductive polymer, which not only has the conductivity of metal and the processability of plastic, but also has the chemical and electrochemical properties that metal and plastic lack, and its raw materials are abundant and cheap. Easy to synthesize. It has broad application prospects in marine anti-corrosion and anti-fouling materials, electromagnetic shielding and wave-absorbing materials, so polyaniline has become one of the most commercially promising conductive polymers. [0003] However, due to the rigidity of polyaniline, its solubility and melting performance are very poor, and it is almost insoluble in any solvent, which limits its application. It is reported in the literature that aniline can be modified by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C08K3/34
Inventor 郑豪叶瑛李俊潘可臻潘依雯周璐夏枚生陈雪刚
Owner ZHEJIANG UNIV
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