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Method for preparing polyaniline micron/nano structure by using polylactic acid regulation and control

A nanostructure, polylactic acid technology, applied in the field of polyaniline, to achieve the effect of simple synthesis conditions, easy post-processing, and peculiar shape

Inactive Publication Date: 2014-07-23
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far there is no report on the preparation of polyaniline micro / nanostructures using polyaniline regulation

Method used

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  • Method for preparing polyaniline micron/nano structure by using polylactic acid regulation and control
  • Method for preparing polyaniline micron/nano structure by using polylactic acid regulation and control
  • Method for preparing polyaniline micron/nano structure by using polylactic acid regulation and control

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Experimental program
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Effect test

Embodiment 1

[0016] (1) The mass ratio of each raw material in this example is aniline: L-polylactic acid: citric acid: ammonium persulfate = 50:20:10:40; citric acid is the doping acid;

[0017] (2) Dissolve L-polylactic acid in chloroform, stir magnetically for 0.5 h at room temperature, and then add aniline to obtain an oil phase;

[0018] (3) Dissolve citric acid and ammonium persulfate in deionized water to form a water phase, in which the concentration of ammonium persulfate is 0.05mol / L and the pH is 3. In a constant temperature water bath at 5°C, slowly drop the prepared aqueous phase solution into the oil phase described in step (2) to form an interface, and let it stand for reaction for 24 hours;

[0019] (4) The product obtained in step (3) was washed with deionized water until the filtrate was colorless. Vacuum drying at 60° C. for 24 hours to obtain the polyaniline micro / nanostructures with different shapes, such as Figure 1A As shown in -B, polyaniline has the appearance c...

Embodiment 2

[0021] (1) The mass ratio of each raw material in this example is aniline: D-polylactic acid: citric acid: ammonium persulfate = 50:20:10:40; citric acid is a doping acid;

[0022] (2) Dissolve D-polylactic acid in chloroform, stir magnetically for 0.5 h at room temperature, and then add aniline to obtain an oil phase;

[0023] (3) Dissolve citric acid and ammonium persulfate in deionized water to form a water phase, in which the concentration of ammonium persulfate is 0.05mol / L and the pH is 3. In a constant temperature water bath at 5°C, slowly drop the prepared aqueous phase solution into the oil phase described in step (2) to form an interface, and let it stand for reaction for 24 hours;

[0024] (4) The product obtained in step (3) was washed with deionized water until the filtrate was colorless. Vacuum drying at 60° C. for 24 hours to obtain the polyaniline micro / nanostructures with different shapes, such as Figure 1C As shown in -D, the polyaniline has a worm-like sh...

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Abstract

The invention relates to a method for preparing a polyaniline micron / nano structure by using polylactic acid regulation and control. The method comprises the following steps: dissolving polylactic acid in chloroform, stirring under room temperature conditions, and adding aniline to obtain an oil phase; dissolving citric acid and ammonium persulfate in deionized water to obtain an aqueous phase; dropwise adding the aqueous phase into the oil phase in a constant temperature water bath at the temperature of 0-10 DEG C, forming an interface, standing and reacting for 1-24 hours, washing, and performing vacuum drying, thus obtaining the polyaniline micron / nano structure. The method is simple in process and low in cost, and the prepared micron / nano structure with controllable appearance and size has the characteristics of peculiar appearance, simple synthesis conditions and simple after-treatment and has huge application prospects in the fields of antistatic and anticorrosive coatings, electromagnetic shielding materials, solar materials and the like.

Description

technical field [0001] The invention belongs to the field of polyaniline, and in particular relates to a method for regulating and preparing polyaniline micro / nano structures by using polylactic acid. Background technique [0002] Polyaniline is a conductive functional polymer. It has the advantages of simple synthesis, low cost, good thermal conductivity and environmental stability, and is used in many fields such as antistatic, anticorrosion coatings, electromagnetic shielding materials, and solar energy materials. As a low-dimensional material, polyaniline micro / nano materials have special physical and chemical properties due to the size effect and quantum effect of micro / nano materials. Therefore, the synthesis and application of polyaniline micro / nano materials have attracted the attention of researchers. With great interest, it has become one of the hot spots in the field of conductive functional polymers. [0003] Some studies have shown that polyaniline micro / nanos...

Claims

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Application Information

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IPC IPC(8): C08G73/02
Inventor 沈青顾洲杰叶家儒王俊婷
Owner DONGHUA UNIV
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