Method for preparing sulfonated polyaniline grafted multi-wall carbon nanotube
A technology of multi-walled carbon nanotubes and sulfonated polyaniline, which is applied in the field of preparation of sulfonated polyaniline-grafted multi-walled carbon nanotube composite materials, can solve problems such as poor compatibility, and achieve excellent conductivity, good dispersion and Solubility effect
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Embodiment 1
[0024] 500 mg of vacuum-dried multi-walled carbon nanotubes with carboxyl groups on the surface were ultrasonically dispersed in 200 ml of N,N-dimethylacetamide, 10 g of thionyl chloride was added, and heated to reflux at 80° C. for 24 hours. After the residual thionyl chloride was distilled off, 10 g of p-phenylenediamine was added and reacted at 120° C. for 72 hours under the protection of nitrogen. After washing, filtering and vacuum drying, the multi-walled carbon nanotubes with aniline groups on the surface are obtained.
[0025] 200 mg of multi-walled carbon nanotubes with aniline groups attached to the surface were added to 200 ml of 1 mol / L HCl solution, and ultrasonically dispersed for 0.5 hours. Add aniline monomer to the suspension containing multi-walled carbon nanotubes and aniline monomer, and ultrasonically disperse for 0.5 hours. Ammonium persulfate dissolved in 50 ml of 1 mol / L HCl solution was added dropwise to the reaction system, and the dropping time was ...
Embodiment 2
[0034] Example 2 can illustrate that if the degree of sulfonation of the sulfonated polyaniline distributed on its surface decreases, the electrical conductivity of the final sulfonated polyaniline grafted multi-walled carbon nanotube composite material will increase, while the solubility in water will decrease . The specific implementation is as follows:
[0035] 500 mg of vacuum-dried multi-walled carbon nanotubes with carboxyl groups on the surface were ultrasonically dispersed in 200 ml of N,N-dimethylacetamide, 10 g of thionyl chloride was added, and heated to reflux at 80° C. for 24 hours. After the residual thionyl chloride was distilled off, 10 g of p-phenylenediamine was added and reacted at 120° C. for 72 hours under the protection of nitrogen. Then after washing, filtering and vacuum drying, the multi-walled carbon nanotubes with aniline groups attached to the surface are obtained;
[0036] Add 200 mg of multi-walled carbon nanotubes with aniline groups on the sur...
Embodiment 3
[0040] Example 3 can illustrate that if the content of multi-walled carbon nanotubes with aniline groups on the surface decreases, the electrical conductivity of the final sulfonated polyaniline-grafted multi-walled carbon nanotubes composite material will decrease. The specific implementation is as follows:
[0041] 500 mg of vacuum-dried multi-walled carbon nanotubes with carboxyl groups on the surface were ultrasonically dispersed in 200 ml of N,N-dimethylacetamide, 10 g of thionyl chloride was added, and heated to reflux at 80° C. for 24 hours. After the residual thionyl chloride was distilled off, 10 g of p-phenylenediamine was added and reacted at 120° C. for 72 hours under the protection of nitrogen. After washing, filtering and vacuum drying, the multi-walled carbon nanotubes with aniline groups on the surface are obtained.
[0042] 200 mg of multi-walled carbon nanotubes with aniline groups attached to the surface were added to 200 ml of 1 mol / L HCl solution, and ult...
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