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High-performance conductive polymer hydrogel preparation method

A conductive polymer and hydrogel technology, applied in the production of bulk chemicals, etc., can solve the problems of high mechanical modulus and poor stability, and achieve the effects of convenient preparation, mild reaction conditions and good application prospects

Active Publication Date: 2019-05-31
东莞市肯泰医疗用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Despite this unique advantage, conductive polymers still face some limitations, such as high mechanical modulus (over 1 GPa) and poor stability in aqueous conditions

Method used

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  • High-performance conductive polymer hydrogel preparation method
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  • High-performance conductive polymer hydrogel preparation method

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preparation example Construction

[0024] The invention provides a method for preparing a high-performance conductive polymer hydrogel, and the specific implementation method is as follows.

[0025] Preparation of hydrogel:

[0026] 1. Prepare 5 parts of 25 mL PEDOT:PSS aqueous solution, add 5%, 10%, 15%, 25%, 50% dimethyl sulfoxide (DMSO) at a volume ratio and stir for 12 hours.

[0027] 2. Drop 5 parts of the solution on a 5 cm * 5 cm polyethylene terephthalate (PET) substrate, drop 10 mL per substrate, cover the entire substrate, and form the maximum surface tension at the edge of the substrate Contact angle and dry at 60°C for 24h. During the drying process, the substrate should be completely flat without any contact, and a large amount of CaCl should be placed 2 Desiccant, replace the desiccant every 4 hours, absorb the volatilized water, and dry until the PEDOT:PSS solution forms a film and the surface is completely dry.

[0028] 3. Self-supporting PEDOT:PSS films with different DMSO volume ratios were...

Embodiment 2

[0036] 1. Prepare 5 parts of 25 mL PEDOT:PSS aqueous solution, add 1-butyl-3-methylimidazolium tetrafluoroborate ((BMIm ) BF 4 ) and stirred for 12 h.

[0037] 2. Drop-coat 5 parts of the solution on a 5 cm*5 cm polypropylene substrate, drop 10 mL on each substrate, cover the entire substrate, form a maximum surface tension contact angle at the edge of the substrate and dry at 60 °C for 24 h . During the drying process, the substrate should be completely flat without any contact, and a large amount of CaCl should be placed 2 Desiccant, replace the desiccant every 4 hours, absorb the volatilized water, and dry until the PEDOT:PSS solution forms a film and the surface is completely dry.

[0038] 3. Obtaining different (BMIm) BFs by peeling dried samples from substrates 4 For a self-supporting PEDOT:PSS film with a volume ratio, the dried film was sandwiched between two flat and clean steel plates and further annealed at 130 °C for 30 min. Annealing at elevated temperatures a...

Embodiment 3

[0046] 1. Prepare 25 mL of PEDOT:5 parts of PSS aqueous solution, add 5%, 10%, 15%, 25%, 50% sodium dodecylsulfonate (SDS) by weight and stir for 12 h.

[0047] 2. Drop 5 parts of the solution on a 5 cm*5 cm polyethylene terephthalate (PET) substrate, drop 10 mL per substrate, cover the entire substrate, and form the maximum surface tension at the edge of the substrate contact angle and dried at 60°C for 24 h. During the drying process, the substrate should be completely flat without any contact, and a large amount of CaCl should be placed 2 Desiccant, replace the desiccant every 4 hours, absorb the volatilized water, and dry until the PEDOT:PSS solution forms a film and the surface is completely dry.

[0048] 3. Self-supporting PEDOT:PSS films with different weight ratios of SDS were obtained by peeling the dried samples from the substrate. The dried films were sandwiched between two flat and clean steel plates, and further annealed at 130 °C for 30 min. Annealing at a temp...

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Abstract

The invention discloses a high-performance conductive polymer hydrogel preparation method. The method includes steps: S1, adding a conductivity enhancer into PEDOT:PSS aqueous solution, and stirring at the room temperature; S2, dropwise adding mixed solution on a base material, and drying to form a polymer film; S3, stripping a dried sample from the base material to obtain a self-support PEDOT:PSSfilm, and annealing; S4, soaking the dried PEDOT:PSS self-support film into pure water solution to swell to obtain stable conductive PEDOT:PSS hydrogel. Compared with the prior art, the method has advantages that (1) the pure PEDOT:PSS hydrogel has extraordinary electric conductivity and mechanical and swelling characteristics, electric conductivity of the PEDOT:PSS hydrogel can be substantiallyimproved by the conductivity enhancer and larger than 30S cm<-1>; (2) convenience in preparation, simplicity and easiness in acquisition are realized, and the method is mild in reaction condition andsuitable for industrial production and has a promising application prospect.

Description

technical field [0001] The invention relates to the technical field of conductive hydrogel, in particular to a method for preparing a high-performance conductive polymer hydrogel. Background technique [0002] Driven by the latest advances in bioelectronics, the differences between electronic devices and the human body are also getting smaller and smaller. Many bioelectronic devices such as epidermal electronics, multifunctional fiber optic probes, and nanoscale sensor arrays have shown a seamless interface between biology and electronics. Despite these successes, most bioelectronic devices still rely on electrode materials that are physically and mechanically distinct from biological tissue. Biological tissues are usually very soft (elastic modulus in the range of 1 kPa–1 MPa) and contain a large amount of water (over 70%), rich in ionic species. In contrast, most inorganic materials (Si, Au, Pt, and Sn) and dry polymers (polycarbonate and polyimide) in bioelectronic devi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/075C08J5/18C08J7/02C08L65/00C08L25/18
CPCY02P20/54
Inventor 卢宝阳屈凯徐景坤刘西梅
Owner 东莞市肯泰医疗用品有限公司
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