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Method for regulation of surface morphology based on change of polypyrrole polymerization time

A technology of surface morphology and polymerization reaction, applied in the field of preparation of polymer films, can solve the problems of limited application prospects, complicated operation and high cost, and achieve the effect of avoiding complex preparation process and good repeatability

Inactive Publication Date: 2019-01-22
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional method of preparing PPy with surface patterning is mainly patterning methods such as photolithography. Due to high cost and complicated operation, its application prospects are severely limited.

Method used

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  • Method for regulation of surface morphology based on change of polypyrrole polymerization time
  • Method for regulation of surface morphology based on change of polypyrrole polymerization time
  • Method for regulation of surface morphology based on change of polypyrrole polymerization time

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Experimental program
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Effect test

Embodiment 1

[0019] Embodiment 1: the method for regulating its surface morphology based on changing the polypyrrole polymerization reaction time, comprises the following steps:

[0020] Step 1: Mix the PDMS prepolymer and crosslinking agent according to the mass ratio of 10:1, pour it into a centrifuge tube, and stir with a glass rod to form a uniform mixture;

[0021] Step 2: vacuum degas the mixture of PDMS prepolymer and cross-linking agent for 1 hour, then pour it into a square petri dish, and make it evenly distributed in the petri dish;

[0022] Step 3: The mixture of prepolymer and crosslinking agent poured into the petri dish is vacuum degassed for 30 minutes, then put into an oven, and heated and cured at 70°C for 4 hours;

[0023] Step 4: Dissolve the pyrrole monomer in hydrochloric acid according to the mass volume ratio of 6.5 mg / ml, and ultrasonically mix to obtain solution A; according to the mass volume ratio of 30 mg / ml, dissolve ferric chloride in hydrochloric acid, and u...

Embodiment 2

[0026] Example 2: A method for controlling the surface morphology of polypyrrole based on changing the polymerization reaction time. In Example 2, except that Step 4 and Step 5 are different from those in Example 1, other steps are the same. Step 4, change the mass volume ratio of pyrrole monomer to hydrochloric acid in solution A from 6.5mg / ml to 7.0mg / ml, change the mass volume ratio of ferric chloride in solution B to hydrochloric acid from 30mg / ml to 35mg / ml ml; in step five, adjust the polymerization reaction time to 5h. The optical microscope picture of the polypyrrole film that embodiment 2 finally obtains is as figure 2 shown.

Embodiment 3

[0027] Example 3: A method for controlling the surface morphology of polypyrrole based on changing the polymerization reaction time. In Example 3, except that Step 5 is different from that in Example 1, other steps are the same. In step five, the polymerization reaction time is adjusted for 9 hours, and the optical microscope picture of the finally obtained polypyrrole film is as follows image 3 shown.

[0028] In summary, the present invention deposits a PPy film on a PDMS substrate, and uses the difference in modulus between the PDMS substrate and the PPy film to induce a surface pattern. By changing the PPy polymerization reaction time, and then changing the modulus of the PPy film, PPy films with different surface patterns were finally prepared. The longer the reaction time, the larger the period of the obtained polypyrrole film pattern. The method of the invention overcomes the previous shortcomings of complicated preparation process and poor process controllability.

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Abstract

The invention discloses a method for regulation of the surface morphology based on change of polypyrrole polymerization time. The preparation process includes: firstly preparing flexible PDMS as the substrate, then depositing a polypyrrole (PPy) film of certain thickness on the surface, and finally conducting washing and drying to obtain a surface patterned PPy film. Specifically, by changing thepolymerization time of PPy, PPy film materials with different surface morphologies can be obtained. By using a simple operation mode, the method provided by the invention acquires the conductive polymer film with certain surface morphology, successfully realizes regulation of the PPy film's surface morphology, thus avoiding complicated and tedious operation steps, long preparation time, expensiveequipment and loss of experimental consumables.

Description

technical field [0001] The invention relates to a method for preparing a polymer film, in particular to a method for regulating the surface morphology of the polymer film. Background technique [0002] Surface-patterned polypyrrole thin film materials have attracted widespread attention and are widely used in people's lives, such as superhydrophobic materials and flexible electronic devices. The traditional method of preparing PPy with surface patterning is mainly patterning methods such as photolithography, which severely limits its application prospects due to high cost and complicated operation. In recent years, in-situ self-wrinkling on flexible substrates to generate surface morphology on the surface of polypyrrole films has attracted more and more attention because of its ease of operation and certain controllability. Contents of the invention [0003] Aiming at the above-mentioned prior art, a method for regulating the surface morphology of polypyrrole film based o...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08G73/06C08L79/04
CPCC08G73/0611C08J5/18C08J2379/04
Inventor 鲁从华杨成枫
Owner TIANJIN UNIV
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