Disperse system of nano composition colloid of polythiophene, and preparation method

A colloidal dispersion and nano-composite technology, applied in the field of polymer materials, can solve the problems of not meeting the requirements of electronic level, low material utilization rate and industrial benefit, and low resistivity.

Inactive Publication Date: 2009-12-16
徐良衡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the particle structure of the colloidal system is not modified or only another compound is added to the system to achieve a state of matter. The conductivity of the film made of this colloid is not ideal. Although it has good water dispersibility, but The transparency and conductivity of the coated film are insufficient, and are generally only suitable for low-end products, which do not meet the requirements of electronic grades, and the material utilization rate and industrial benefits are low
As described in Japanese Laid-Open Patent No.JP8-48858 and No.JP2636968, the resistivity of preparing film by its method is less and only 10 2 Ω.cm level, can not meet the electronic level requirements of 10 3 ~10 5 Ω.cm

Method used

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  • Disperse system of nano composition colloid of polythiophene, and preparation method
  • Disperse system of nano composition colloid of polythiophene, and preparation method
  • Disperse system of nano composition colloid of polythiophene, and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0027] In the presence of oxidant air, the polymerization reaction temperature is room temperature, 1.5g of 3,4-ethylenedioxythiophene and 3.18g of polyethylene sulfonic acid (Mn=120000) are added to 200ml of deionized water, and 0.15g of Polyethylene glycol 600, blowing air into the air, stirring at 6000rpm, adding an acid-base modifier, controlling the pH of the system to be below 2, stirring for 15 hours, reaction temperature 60°C, and finally ultrasonically dispersing for 3.0 hours. At the end of the reaction, a blue-black polymer dispersion system is formed.

[0028] The dispersion was put into a dialysis bag after active treatment (maximum dialysis Mn = 7000) for countercurrent dialysis. After 30 hours, the pH of the system was measured to be 1.50, and the solid content (100° C., 6 hours) was 1.50%. Ion content: Na + , 350ppm; SO 4 2- , 100ppm. The maximum particle diameter is less than 100nm.

[0029] The element analysis data of the finished colloidal dispersion s...

Embodiment 2

[0031] 10g of ethylenedioxythiophene, 400g of 5.99% polystyrene sulfonate sodium (PSSA) and 2062ml of deionized water were mixed and stirred, and after initial stirring for 10min at room temperature, 3.0g of polyethylene glycol 1200 was added to the system , high-speed airflow impact, the stirring rate reaches 12000rpm, add 22.5g of oxidant potassium persulfate, and at the same time add a certain amount of acid-base mediator to control the pH value of the system below 3.0 during the reaction, the stirring reaction time is 24h, and the reaction temperature is 20-40 ℃. Then ultrasonically dispersed for 5h. After the reaction, a blue-black aqueous polymerization dispersion system is formed, the measured pH of the system is 2.5, the solid content is 1.67%, and the maximum particle diameter is less than 100nm. The removal method of small molecule organic matter and impurity ions is the same as that in Example 1 to obtain a colloidal dispersion system, ion content: Na + , 250ppm; ...

Embodiment 3

[0033] Add 20g of PSS (Mn=50000) to 2000ml of deionized water, and at the same time add 8.0g of 3,4-dimethoxythiophene. After initial low-speed stirring for 20min, add 21.4g of the oxidizing agent ammonium persulfate, and the mixture is stirred at room temperature at high speed. Airflow impact, high-speed stirring (8000rpm) to control the pH value below 4, after reacting for 20 hours, add 10g PSS again, and ultrasonically disperse for 4 hours to obtain a blue-black dispersion liquid. The removal method of small molecular organics and impurity ions is as in Example 1. In the final colloidal dispersion system, the measured liquid solid content was 2.67%, and the pH of the solution was 1.28. Ion content: Na + , 300ppm; SO 4 2- , 90ppm. The maximum particle diameter is less than 100nm. Code NM3, storage time > 8 months at 10°C.

[0034] The comparative example of example 3 (non-nanometer composite dispersion system FNM)

[0035] Add 20g of PSS (Mn=50000) to 2000ml of deioniz...

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Abstract

The invention belongs to the technical field of polymer materials, and specifically relates to a novel polythiophene nanocomposite colloidal dispersion system and a preparation method thereof, and a method for preparing the colloidal dispersion system into a nanometer film. The original monomer of the colloidal dispersion system is polythiophene derivatives, adding deionized water, polymer polyanion electrolytes, alcohols, oxidants, impacted by high-speed airflow, stirring to form a homogeneous system of bubbles; after the reaction, ultrasonic dispersion , forming a stable colloidal dispersion system. The colloidal dispersion system was repeatedly coated on the substrate by spin coating method, and self-assembled to form a thin film. The film has excellent electrical conductivity, which greatly expands its application range.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a novel polythiophene nanocomposite colloid dispersion system and a preparation method thereof. The invention also relates to a method for making the nanocomposite dispersion system into a nanofilm. Background technique [0002] In the 21st century, the rapid development of information, biotechnology, energy, environment, advanced manufacturing technology and national defense will inevitably put forward new requirements for materials. Size requirements are getting smaller and smaller. Nanomaterials and nanostructures are the most dynamic research objects in the field of new materials research today, and have a very important impact on future economic and social development. They are also the most active and important components of nanotechnology that are closest to applications. Remarkable achievements have been made in nanomaterials and nanostructures in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G61/12
Inventor 徐良衡王群英高芸常志远
Owner 徐良衡
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