Polyelectrolyte / intrinsic conducting polymer composite humidity sensor and its production method
A technology of composite humidity sensor and polyelectrolyte, which is applied in the field of polyelectrolyte/intrinsically conductive polymer composite humidity sensor, can solve the problems of low ion mobility, excessive resistance value, difficulty in measurement, etc., and achieve good response linearity , Improve consistency, high humidity sensitivity effect
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Embodiment 1
[0030] 1) Soak and clean the glass-ceramic substrate with interdigitated gold electrodes on the surface for photolithography and evaporation with absolute ethanol and acetone, and dry it for later use;
[0031] 2) Dissolving poly-4-vinylpyridine and 1,4-dibromobutane in N,N-dimethylformamide, the 4-vinylpyridine unit in the polymer and 1,4-dibromobutane The molar ratio is 1:0.5, and it is prepared into a solution with a polymer concentration of 10 mg / ml, which is placed at 30 °C for 4 hours to obtain a precursor solution;
[0032] 3) The glass-ceramic interdigitated gold electrode in step 1) was immersed in the precursor solution for 0.5 minutes using a dip coating machine, pulled out, cross-linked and quaternized at 80° C. for 12 hours, and then placed on the glass-ceramic interdigitated gold electrode. A polyelectrolyte base film is formed on the surface;
[0033] 4) ammonium persulfate and 4-methylbenzenesulfonic acid are dissolved in deionized water, the mass ratio of amm...
Embodiment 2
[0036] 1) electrode cleaning is the same as in Example 1;
[0037] 2) Dissolving poly-4-vinylpyridine and 1,4-dibromobutane in N,N-dimethylformamide, the 4-vinylpyridine unit in the polymer and 1,4-dibromobutane The molar ratio is 1:2, prepared into a solution with a polymer concentration of 30 mg / ml, placed at 30 ° C for 12 h to obtain a precursor solution;
[0038] 3) The glass-ceramic interdigitated gold electrode in step 1) was immersed in the precursor solution for 2 minutes using a dip coating machine, pulled out, cross-linked and quaternized at 140° C. for 2 hours, and then placed on the glass-ceramic interdigitated gold electrode. A polyelectrolyte base film is formed on the surface;
[0039] 4) ammonium persulfate and 4-methylbenzenesulfonic acid are dissolved in deionized water, the mass ratio of ammonium persulfate and 4-methylbenzenesulfonic acid is 1:3, and the ammonium persulfate concentration is 4 mg / ml, obtains solution A;
[0040] 5) The glass-ceramic inter...
Embodiment 3
[0042] 1) electrode cleaning is the same as in Example 1;
[0043] 2) Dissolving poly-4-vinylpyridine and 1,4-dibromobutane in N,N-dimethylformamide, the 4-vinylpyridine unit in the polymer and 1,4-dibromobutane The molar ratio of 1:1 was prepared into a solution with a polymer concentration of 24 mg / ml, and placed at 30 °C for 12 h to obtain an electrolyte precursor solution;
[0044]3) The glass-ceramic interdigitated gold electrode in step 1) was immersed in the precursor solution for 1 minute by a dip coating machine, pulled out, cross-linked and quaternized at 110° C. for 10 h, and the glass-ceramic interdigitated gold electrode was placed on the glass-ceramic interdigitated gold electrode. A polyelectrolyte base film is formed on the surface;
[0045] 4) ammonium persulfate and 4-methylbenzenesulfonic acid are dissolved in deionized water, the mass ratio of ammonium persulfate and 4-methylbenzenesulfonic acid is 1:2, and the ammonium persulfate concentration is 1.5 mg / m...
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Abstract
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