A kind of 2-methyl-3-alkylimidazolium salt polyarylether comb polymer and its preparation and application
A technology of comb polymer and alkyl imidazole, which is applied in the field of comb polymer and its preparation, and can solve the problems of poor alkali resistance and low ion conductivity of quaternary ammonium groups
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0041] Embodiment 1: 2-methyl-3-hexyl imidazolium salt polyaryl ether sulfone comb polymer and preparation method thereof
[0042] (1) Preparation of bromomethylated polyaryl ether sulfone: Dissolve 15 g of tetramethylbiphenol type polyaryl ether sulfone in 200 mL of chloroform, add to 500 mL of N 2 In a protected three-necked flask, heat to 70°C under mechanical stirring. 11.75g of N-bromosuccinimide and 1.6g of benzoyl peroxide were added to the reaction system in two steps. The reaction was continued for 24h, and discharged in acetone after cooling. The strips are pulverized with a high-speed pulverizer, and then the polymer is boiled and washed with distilled water, filtered, and repeated 6 times, and then dried in a vacuum oven to obtain the product.
[0043] The peak at 4.5ppm in the NMR spectrum corresponds to the hydrogen on the benzyl bromide carbon (Ar-CH 2 -Br), the peak at 2.2 ppm corresponds to hydrogens on residual methyl groups that did not participate in t...
Embodiment 2
[0048] Example 2: 2-methyl-3-decyl imidazolium salt polyarylethersulfone comb polymer and its preparation method
[0049] (1) Preparation of bromomethylated polyaryl ether sulfone: same as Example 1.
[0050] (2) Preparation of 1-decyl-2-methylimidazole: Dissolve 2.46g of 2-methylimidazole, 5.97g of 1-bromodecane and 1.8g of sodium hydroxide in 70mL of acetonitrile and heat with mechanical stirring at 60°C React for 12h, continue to feed N 2 Protect. After the reaction was completed, it was cooled to room temperature, and the precipitate was filtered off. The acetonitrile solvent was removed with a rotary evaporator to obtain the crude product as an oil. The crude product was dissolved in 70mL of dichloromethane, washed four times with water, separated, dried with anhydrous magnesium sulfate for 48h, and obtained by filtration.
[0051] The obtained 1-decyl-2-methylimidazole is subjected to structure determination by nuclear magnetic resonance spectrum, and the result is o...
Embodiment 3
[0054] Embodiment 3: Preparation of dimethylimidazolium salt polyarylethersulfone polymer
[0055] 3g of bromomethylated polyaryl ether sulfone with a bromination degree of 1.75 was completely dissolved in 30mL of N-methylpyrrolidone, and then 1.01g of 1,2-dimethylimidazole was added to the reaction solution, N 2 Protected, mechanically stirred, and heated at 60°C for 12h. After cooling, the material was discharged in acetone, crushed, filtered, washed 5 times with water, and dried to obtain bromo-type dimethylimidazolium salt polyarylethersulfone polymer (ImPAES-C1).
[0056] figure 1 In the NMR spectrum shown, the peak at 0.8 ppm corresponds to the hydrogen on the N3 methyl group of the grafted imidazole ring, thus proving the successful introduction of the dimethylimidazolium group. By calculating the residual hydrogen in the benzyl bromine position in the nuclear magnetic spectrum, the calculated reaction conversion rate is also 74%. The glass transition temperature of ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| glass transition temperature | aaaaa | aaaaa |
| glass transition temperature | aaaaa | aaaaa |
| glass transition temperature | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More