Production of de-novo hydrophobic poly-pyrrolidone film

A hydrophobic and pyrrole membrane technology, applied in the direction of electrolytic process, electrolytic components, electrolytic organic production, etc., can solve the problems of incompetence and achieve the effect of reducing the degree of requirements

Inactive Publication Date: 2007-09-05
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Obviously, the above-mentioned types of materials can meet some important purposes. However, when these materials are applied to anti-corrosion or water-repellent surfaces, and other hydrophobic applications, they cannot be fully qualified. Therefore, it is necessary to study a redox Conductive polymers that are fully hydrophobic within the potential range, that is, oxidized state, reduced state-fully hydrophobic materials, so as to meet the above requirements

Method used

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  • Production of de-novo hydrophobic poly-pyrrolidone film
  • Production of de-novo hydrophobic poly-pyrrolidone film

Examples

Experimental program
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Embodiment 1

[0035] (1) Using conductive glass (ITO) as the conductive substrate, the surface is coated with block copolymer polystyrene-polyisoprene-polylactic acid by pulling method, and the surface has block copolymer polystyrene-polylactic acid. Polyisoprene—the conductive substrate of polylactic acid film; the pulling speed is 5 mm / min, and the thickness is 200 nm;

[0036] (2) annealing the product obtained in step (1) at less than 0.1 atmospheric pressure and 150° C. for 15 hours, and cooling to room temperature;

[0037] (3) immerse the product obtained in step (2) in a mixed solution of NaOH, methanol and water with a concentration of 0.05M (the volume ratio of methanol and water is: 5:5), corrode for 40 minutes, remove polylactic acid, and Forming a PS-PI film with nanopores;

[0038] (4) With the product of step (3) as the working electrode, in the three-electrode system with the reference electrode saturated calomel electrode and the auxiliary electrode platinum wire, in the a...

Embodiment 2

[0041] Adopt the method of embodiment 1, utilize the method for spin-coating (rotating speed is 2000 rev / mins) to prepare the film of polystyrene-polyisoprene-polylactic acid on the surface of conductive glass, and under the condition of less than 0.1atm and 150 ℃ After 15 hours of treatment, a polystyrene-polyisoprene-polylactic acid / conductive glass composite electrode was obtained, and then treated in an alkaline solution to obtain a polystyrene-polyisoprene / conductive glass composite electrode. The thickness of the film 56 nm;

[0042] Use this electrode as the working electrode, use the saturated calomel electrode and the platinum wire as the reference electrode and the auxiliary electrode respectively, use a three-electrode system in 0.5M potassium chloride + 0.1M pyrrole solution, and scan 5 times at 0.1-0.8V , taken out, cleaned, dried, and tested for water wettability. Figure 2 shows the figure of water droplets on the surface of the polypyrrole thin layer, wherein th...

Embodiment 3

[0044] Adopt the method of embodiment 1, utilize the method for spin-coating (rotating speed is 2000 rev / mins) to prepare the film of polystyrene-polyisoprene-polylactic acid on the surface of conductive glass, and under the condition of less than 0.1atm and 150 ℃ After 15 hours of treatment, a polystyrene-polyisoprene-polylactic acid / conductive glass composite electrode was obtained, and then treated in an alkaline solution to obtain a polystyrene-polyisoprene / conductive glass composite electrode. The thickness of the film 56 nm;

[0045] Use this electrode as the working electrode, use the saturated calomel electrode and the platinum wire as the reference and auxiliary electrodes respectively, use a three-electrode system in 0.1M pyrrole solution, scan 2000 cycles at 0.1-0.65V for 920 minutes, take out , washed, dried, and tested for water wettability, wherein the contact angle is 95°, and the material is hydrophobic.

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Abstract

Production of de novo hydrophobic poly-azole film is carried out by taking wetted conductive poly-azole with switch property as raw material, selecting non-smooth substrate BCP to increase roughness, converting oxygenated hydrophilic property into hydrophobic property, controlling corresponded oxygenated hydrophobic property, depositing poly-azole thin-layer on surface selectively by electrochemical method and changing polymerization time to obtain the final product. It can decrease experimental parameter during process of polymerization and have polymer conductive product.

Description

technical field [0001] The invention relates to a method for preparing a whole-range hydrophobic polypyrrole film, in particular to a method for selectively depositing a polypyrrole thin layer on the surface of a block copolymer (BCP) film with nano-holes by using electrochemical polymerization technology. Background technique [0002] When conductive polymer materials are used in biosensors, anti-corrosion films, and artificial muscles, there are special requirements for the wettability of their surfaces. So far, conductive polymer materials with different wettability have been prepared. According to the corresponding relationship between wettability and redox state (or doping state), they can be divided into: oxidation state-hydrophilicity, reduction state-hydrophobic properties; oxidized state-hydrophobic, reduced state-hydrophilic; oxidized state, reduced state-full hydrophilicity and other materials. Techniques as reported in the following literature: [0003] (1) G. ...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L79/04C25B3/00
Inventor 赵崇军张华陈宸郭守武
Owner EAST CHINA UNIV OF SCI & TECH
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