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Polythiophene composite material and preparation method thereof

A composite material, a technology of polythiophene, applied in the field of polythiophene composite material and its preparation

Inactive Publication Date: 2014-08-06
喻小琦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there have been related reports on the preparation of polythiophene / insulating polymer composites, there have been no reports on the direct chemical polymerization of thiophene on insulating polymer films.

Method used

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  • Polythiophene composite material and preparation method thereof
  • Polythiophene composite material and preparation method thereof
  • Polythiophene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Polyethylene terephthalate (PET) film (25cm square, thickness 30μm) was sulfonated in 50ml chlorosulfonic acid at 0°C, and the reaction time was 2 hours to obtain a sulfonated insulating polymer The polymer film was rinsed with distilled water for several times, and then evaporated at room temperature to obtain a polyethylene terephthalate with sulfonate groups.

[0069] Dissolve thiophene in a mixed solvent composed of chloroform and ether (volume ratio 1:9) to prepare 500 mL of 0.1 mol / L thiophene monomer solution, and dissolve iron (Ⅲ) toluenesulfonate salt in distilled water to prepare 500 mL 0.4mol / L iron (Ⅲ) toluenesulfonate salt solution. The amounts of the two solutions are such that the molar ratio of the iron (III) toluenesulfonate salt to the thiophene monomer is 4:1.

[0070] The sulfonated polyethylene terephthalate film was immersed in the iron (Ⅲ) toluenesulfonate salt solution for 4 hours and the immersion temperature was 25°C. After taking out the pol...

Embodiment 2

[0072] Repeat Example 1, change the amount of iron tosylate iron (Ⅲ) salt, the amount of both the oxidant solution and the monomer solution makes the molar ratio of the oxidant to the monomer 2:1, and the concentration of the thiophene monomer solution remains 0.1mol / L unchanged. A polythiophene composite material with high conductivity was obtained. The thickness of the polythiophene film on both sides of the insulating polymer film was about 35 μm, and the conductivity could reach 5.2×10 -3 S / cm. The weight average molecular weight was 15,000.

Embodiment 3

[0074] Repeat Example 1, changing the amount of iron (Ⅲ) toluenesulfonate added, so that the ratio of oxidant to monomer is 1:1, and the concentration of thiophene solution remains unchanged at 0.1 mol / L. A polythiophene composite material with high conductivity was obtained. The thickness of the polythiophene film on both sides of the insulating polymer film was about 35 μm, and the conductivity could reach 3.6×10 -3 S / cm.

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Abstract

The invention relates to a polythiophene composite material, which comprises a sulfonated insulating polymer film and a polythiophene film which is laminated on one or two faces of the sulfonated insulating polymer film, wherein the polythiophene composite material is obtained by polymerizing thiophene and / or a thiophene derivative on one or two faces of the sulfonated insulating polymer film; the polymerized monomer is preferably selected as thiophene and 3-methylthiophene; and the insulating polymer film is preferably selected as polyethylene glycol terephthalate, polyamino-bis-mieimide or polystyrene. In addition, the invention also provides a preparation method of the polythiophene composite material with high conductivity. By compounding the polythiophene and a matrix, the composite material has not only superior conductivity but also flexibility of commodity polymer. The conductivity of the composite material can reach the order of magnitude of 10<-3> S / cm; and the composite material can be applied to the fields such as electromagnetic wave shielding, anti-static and organic electronic devices.

Description

technical field [0001] The invention relates to a polythiophene composite material and a preparation method thereof, in particular to a high-conductivity polythiophene / insulating polymer film composite material and a preparation method thereof. Background technique [0002] Conductive polymers are considered to be new materials in the 21st century because of their good thermal stability, chemical stability, high charge storage capacity, good electrochemical performance and gas separation performance. Polythiophene has aroused great interest of researchers because of its excellent electrical properties, easy preparation, good thermal stability, and high use value after compounding with other general-purpose polymers (Synthetic Metals 2004, 142, 309) . Generally, the conductivity, morphology and performance of polythiophene composite films obtained by selecting different preparation processes and preparation conditions in the process of preparing polythiophene composite mater...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/16C08J7/14C08L67/02C08L79/08C08L25/06C08G61/12
Inventor 陈鸣才许凯喻小琦
Owner 喻小琦