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Method for preparing morphology-controlled polyphenylethene/polyaniline conductive polymeric composite microspheres

A conductive polymer and polystyrene technology, applied in the direction of non-metallic conductors, organic material conductors, etc., can solve the problems of single shape, poor controllability of product shape and size, etc., and achieve the effect of controlling shape

Inactive Publication Date: 2008-07-23
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the polystyrene / polyaniline composites obtained by this method have a core-shell structure with a single shape, and the controllability of the shape and size of the product is poor.

Method used

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  • Method for preparing morphology-controlled polyphenylethene/polyaniline conductive polymeric composite microspheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1. Using ammonium persulfate (APS) as an oxidizing agent, polystyrene / polyaniline conductive polymer composite microspheres with a core-shell structure were obtained.

[0024] 1) first prepare monodisperse polystyrene microspheres by the method of soap-free emulsion polymerization;

[0025] 2) Dissolve 0.3g of PS spheres synthesized in step 1) in 20ml of deionized water, and stir magnetically until a uniform emulsion is formed;

[0026] 3) Accurately measure 2ml of aniline monomer (0.02mol) into the above emulsion with a syringe, and stir magnetically at room temperature for 10 hours until a uniform solution is formed;

[0027] 4) 0.02mol of ammonium persulfate (E ox =2.0V) was dissolved in 15ml of distilled water, and placed in the refrigerator to refrigerate for 30 minutes, and the optimum molar ratio of ammonium persulfate and aniline monomer was tested to be 1:1;

[0028] 5) Add 5ml of the aqueous solution of the oxidizing agent in step 4) to the solution ...

Embodiment 2

[0031] Embodiment 2, with ferric nitrate (Fe(NO 3 ) 3 ) as an oxidant to obtain polystyrene / polyaniline conductive polymer composite microspheres with a sea urchin-like structure.

[0032] 1) first prepare monodisperse polystyrene microspheres of a certain diameter by the method of soap-free emulsion polymerization;

[0033] 2) Dissolve 0.3g of PS spheres synthesized in step 1) in 20ml of deionized water, and stir magnetically until a uniform emulsion is formed;

[0034] 3) Accurately measure 2ml of aniline monomer (0.02mol) into the above emulsion with a syringe, and stir magnetically at room temperature for 10 hours until a uniform solution is formed;

[0035] 4) Dissolve 0.08mol of ferric nitrate in 15ml of distilled water, and place it in the refrigerator for 30 minutes to refrigerate. The best molar ratio of ammonium persulfate and aniline monomer is determined to be 1:4;

[0036] 5) Add 5ml of the aqueous solution of the oxidizing agent in step 4) to the solution cont...

Embodiment 3

[0039] Embodiment 3, with ferric chloride (FeCl 3 ) as an oxidant to obtain polystyrene / polyaniline conductive polymer composite microspheres with a sea urchin-like structure.

[0040] 1) first prepare monodisperse polystyrene microspheres of a certain diameter by the method of soap-free emulsion polymerization;

[0041] 2) Dissolve 0.3g of PS spheres synthesized in step 1) in 20ml of deionized water, and stir magnetically until a uniform emulsion is formed;

[0042] 3) Accurately measure 2ml of aniline monomer (0.02mol) into the above emulsion with a syringe, and stir magnetically at room temperature for 10 hours until a uniform solution is formed;

[0043] 4) 0.1mol of ferric chloride was dissolved in 15ml of distilled water, and placed in the refrigerator for 30 minutes, and the optimum molar ratio of ammonium persulfate and aniline monomer was determined to be 1:5;

[0044] 5) Add 5ml of the aqueous solution of the oxidizing agent in step 4) to the solution containing an...

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Abstract

The invention relates to a preparation method of polystyrene / polyaniline conductive polymer composite microspheres with controllable shape and appearance, belonging to the polymer composite technical field, which is characterized in that: firstly, a plurality of PS microspheres with a certain diameter are prepared by the emulsifier-free emulsion polymerization, the PS microspheres are taken as the hard template and added into deionized water in which a plurality of aniline monomers are dispersed, the mixture is stirred by magnetic force to form homogenous emulsion at the ambient temperature; secondly, oxidant solution is added into the former mixture one-time, the PS microspheres are taken as the hard template and the micelle formed by the aniline monomers are taken as the ''soft template''; at last, the polystyrene / polyaniline conductive polymer composite microspheres are obtained by conventional post-processing. The preparation method of polystyrene / polyaniline conductive polymer composite microspheres with controllable shape and appearance has the advantages that: the shape and appearance of the polystyrene / polyaniline conductive polymer composite microspheres can be controlled just by regulating the redox ability of the oxidant; meanwhile, the wall thickness of the core-shell structure and the diameter and the length of the nanometer fiber can be controlled by regulating the addition of the aniline monomers and the redox ability and the addition of the oxidant.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and in particular relates to a method for preparing polystyrene / polyaniline conductive polymer composite microspheres with controllable morphology. Background technique [0002] The study of conductive polymers has important scientific significance. In just two decades, conducting polymer research has developed from some simple polymers to a new interdisciplinary research field. The Nobel Prize in Chemistry in 2000 was awarded to A.J.Heeger, A.G.MacDiarmid and Shirakawa Hideki, three scientists who pioneered conductive polymers, which also fully demonstrates the scientific community's recognition of the importance of research on conductive polymers. Among many conductive polymers, polyaniline is considered to be the best because of its cheap monomer price, polyaniline’s diverse structure, unique doping mechanism, easy synthesis, good environmental stability and high conductiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L79/02C08G73/02C08K3/30H01B1/12
Inventor 王戈丁杭军曹利静
Owner UNIV OF SCI & TECH BEIJING
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