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A kind of preparation method of high-performance conductive polymer hydrogel

A conductive polymer and hydrogel technology, applied in the production of bulk chemicals, etc., can solve problems such as high mechanical modulus and poor stability

Active Publication Date: 2021-09-14
东莞市肯泰医疗用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • A kind of preparation method of high-performance conductive polymer hydrogel
  • A kind of preparation method of high-performance conductive polymer hydrogel
  • A kind of preparation method of high-performance conductive polymer hydrogel

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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 preparation method of a high-performance conductive polymer hydrogel, comprising the following steps: S1: adding a conductivity enhancer to the PEDOT:PSS aqueous solution, stirring at room temperature; S2: directly dropping the mixed solution into On the substrate, dry to form a polymer film; S3: peel off the dry sample from the substrate to obtain a self-supporting PEDOT:PSS film, and anneal; S4: soak the dry PEDOT:PSS self-supporting film into a pure aqueous solution to swell to obtain Stable conductive PEDOT:PSS hydrogels. Compared with the prior art, the present invention has the following beneficial effects: (1) Pure PEDOT:PSS hydrogel has extraordinary conductivity, mechanical and swelling properties, and the conductivity enhancer can greatly improve the performance of PEDOT:PSS hydrogel. Conductivity, with >30 S cm ‑1 of high conductivity. (2) It is easy to prepare, easy to obtain, and has mild reaction conditions, which is suitable for industrial production and has a good 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 Patents(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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