A kind of preparation method of polyaniline
The technology of polyaniline and polystyrene aldehyde-based microspheres is applied in the field of preparation of polyaniline, which can solve the problems of complex preparation process and easy to cause pollution, and achieve the effects of simple preparation process, high repeatability and high catalytic activity.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0024] 1. Preparation of polystyrene aldehyde-based microspheres:
[0025] (1) Add 18mL of absolute ethanol, 25mL of deionized water and 2.5g of polyvinylpyrrolidone (PVP) into a three-necked flask equipped with a condenser, and place it in a constant temperature water bath at 70°C, mechanically stir and keep the speed at 315r / min.
[0026] (2) Dissolve 0.1 g of initiator AIBN in 6 mL of styrene to obtain monomeric styrene in which the initiator AIBN is dissolved.
[0027] (3) Add monomer styrene dissolved with initiator AIBN into the system obtained in (1), and add 2.53g of acrolein (C 3 h 4 O), after constant temperature reaction for 7 hours, add hydrochloric acid and increase the temperature of constant temperature water bath to 80°C for 12 hours, after stopping the reaction, wash with ethanol / water and ultrasonic several times to prepare surface functionalized polystyrene aldehyde microspheres (PS-CHO) Emulsion.
[0028] 2. Preparation of surface-modified palladium nan...
Embodiment 2
[0034] The same steps as in Example 1 are not repeated here, only the amount of catalyst in step 3 is changed, which is 0.06g.
[0035] Other steps are the same as in Example 1.
[0036] 2. Analysis of test results:
[0037] 1. UV spectrum characterization of polyaniline:
[0038] Take the product generated by the reaction and dilute to 10 -5 ~10 -6 The order of magnitude is characterized by ultraviolet spectroscopy; a certain amount of polyaniline solution is added to the generated product and diluted to 10 -5 ~10 -6Order of magnitude, characterized by UV spectroscopy. Comparing the position and intensity of the ultraviolet absorption peak, it is found that the product has a strong absorption peak at 313nm, and the absorption value is 0.140. After adding polyaniline, the product and the polyaniline mixture have a strong absorption peak at 314nm, and the absorption value It is 0.153, and the absorption value increases obviously. The added polyaniline not only increases ...
Embodiment 3
[0042] A preparation method for polyaniline, comprising the steps of:
[0043] 1) Using azobisisobutyronitrile as the initiator, polyvinylpyrrolidone as the dispersant, and ethanol and water as the solvent, copolymerize styrene and acrolein to prepare a polystyrene aldehyde-based microsphere emulsion, which is centrifuged Separation, washing, and drying to obtain polystyrene aldehyde-based microspheres; wherein the mass ratio of dispersant, initiator, styrene and acrolein is 24g, 0.8g, 50g, and 22g; specifically, polyvinylpyrrolidone is dissolved in In the mixed solution of ethanol and deionized water, it is configured into polyvinylpyrrolidone solution; the initiator azobisisobutyronitrile is dissolved in styrene to obtain monomer styrene dissolved with initiator AIBN; then the polyvinylpyrrolidone solution and the solvent After mixing monomer styrene with initiator AIBN at 70±2℃, add acrolein, add hydrochloric acid to adjust pH=7 during the reaction, react at 80±2℃ for 12±2h...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More