Method for preparing size monodispersed core-shell structural conductive polymer microspheres

A technology of conductive polymer and core-shell structure, applied in the direction of non-metallic conductors, organic material conductors, etc., can solve the problems of poor processability, insoluble and infusible, etc., and achieve extremely narrow particle size distribution, simple method, and shell thickness controllable effect

Inactive Publication Date: 2008-07-23
XIAMEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the huge molecular rigidity of conjugated polymers makes them insoluble and

Method used

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  • Method for preparing size monodispersed core-shell structural conductive polymer microspheres

Examples

Experimental program
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Effect test

Embodiment 1

[0027] In the three-necked flask equipped with reflux condenser and mechanical stirrer, add monomer amount 10% stabilizer PVP, the medium is ethanol, pass N 2 Evacuate, heat up to the reaction temperature under stirring to dissolve PVP, add 1% BPO-dissolved styrene (St) at 80°C, and continue to pass N 2 2h, stirring at constant temperature for 9h to obtain a polymer dispersion. Centrifuge the emulsion with a low-speed centrifuge at 2500 rpm for 20 minutes, ultrasonically disperse the lower layer with denatured alcohol, then centrifuge, and wash repeatedly 5 times to wash away the floating stabilizers and oligomers on the surface of the microspheres. The microspheres were dried below 60°C. The obtained polymer microspheres had a particle size of 1.441 μm and a polydispersity index of 1.049.

[0028] Weigh 1 g of polystyrene monodisperse microspheres into a three-necked bottle, add 20 ml of deionized water, and disperse by ultrasonication for 30 minutes, then add 0.57 g of APS...

Embodiment 2

[0030] Same as in Example 1, the dosage of the stabilizer is 4.5%, the particle size of the obtained polymer microspheres is 2.491 μm, and the polydispersity index is 1.036.

Embodiment 3

[0032]Same as in Example 1, the dosage of the stabilizer is 3%, the particle size of the obtained polymer microspheres is 2.026 μm, and the polydispersity index is 1.061. The oxidizing agent is 0.675gKPS, and the amount of aniline is 0.220mL.

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Abstract

The invention discloses a preparation method of monodispersed conductive polymer microspheres with core-shell structure, which relates to a conductive polymer microsphere and provides a preparation method of monodispersed conductive polymer microspheres with core-shell structure. The stabilizing agent and lower alcohol mediator are added to a reactor, stirred and warmed up to dissolve the polyvinyl pyrrolidone; the vinyl monomers dissolved with initiators are added to obtain the polymer dispersion liquid which is then centrifugal separated; the stabilizing agent and lower alcohol adsorbed on the polymer microsphere surfaces are washed out; the polymer microspheres are positioned inside the reactor after being dried, then water is added enabling the polymer microspheres occupying 10% to 30% of the whole reacting system; oxidant is added after ultrasonic decentralization; inorganic acid is added after the oxidant is dissolved; conductive polymer monomers are injected after ice-water bath; and then ice-water bath, coating polymerization while stirring, centrifugal separation of the production, repeating washing by deionized water for the neutral system, and vacuum desiccation are performed.

Description

technical field [0001] The invention relates to a conductive polymer microsphere, in particular to a preparation method of a particle size monodisperse conductive polymer microsphere with a core-shell structure. Background technique [0002] Monodisperse polymer microspheres with large particle size have the characteristics of large specific surface area, strong adsorption, strong agglutination and strong surface reaction ability, and have broad application prospects after introducing required groups through surface functionalization or compounding. [0003] The Chinese patent application with the patent application number 200310101472.8 provides a method of using silicon porous membrane (SPG) technology to press the polymer solution through the membrane into the dispersed phase to emulsify and then solidify to prepare monodisperse microspheres. [0004] The Chinese patent application with the patent application number 200510090442.0 provides a method for preparing μm-sized ...

Claims

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Application Information

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IPC IPC(8): C08F2/00C08F2/44C08F2/38C08F12/08C08F20/06C08F20/10C08L101/12H01B1/12
Inventor 戴李宗邓远名雷光财许一婷陈江枫杨柯佳
Owner XIAMEN UNIV
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