Preparation method and application of macroporous polyacryamide resin
A technology of polyacrylamide and acrylamide, applied in the field of materials, can solve the problems of uncontrollable resin pore size, poor effect, uneven size, etc., achieve uniform and dense pore size, simple preparation method, strong water absorption and adsorption Effect
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Embodiment 1
[0036] 1. Preparation of water phase
[0037] Add 5.0g of acrylamide, 0.50g of ammonium persulfate, and 1.0g of N,N'-methylenebisacrylamide into 30g of deionized water, acrylamide and ammonium persulfate, N,N'-methylenebisacrylamide, The mass ratio of deionized water is 1:0.1:0.2:6, stirred until the solid is completely dissolved, and prepared into 36.5g of water phase.
[0038] 2. Preparation of oil phase
[0039] Put 90g of cyclohexane in a 250mL three-necked flask equipped with a stirrer, add 0.1g of Span-60 and 0.5g of Span-80, and the mass ratio of Span-60 to Span-80 and cyclohexane is 1 : 5: 900, stirred at room temperature until Span-60 and Span-80 were fully dissolved, and prepared into 90.6g of oil phase.
[0040] 3. Preparation of macroporous polyacrylamide resin
[0041] Add 2 g of N, N' dimethylformamide to 36 g of water phase, mix well, the mass ratio of N, N' dimethyl formamide to water phase is 1:18, under the protection of nitrogen, use constant pressure dro...
Embodiment 2
[0056] In step 1 of preparing the water phase in this example, 5.0 g of acrylamide, 0.30 g of ammonium persulfate, and 0.5 g of N,N′-methylenebisacrylamide were added to 15 g of deionized water, and acrylamide, ammonium persulfate, The mass ratio of N,N'-methylenebisacrylamide to deionized water is 1:0.06:0.1:3, stirred until the solid is completely dissolved, and prepared into 20.8 g of water phase. In step 3 of preparing macroporous polyacrylamide resin, add 2.0 g of N,N'-dimethylformamide to 20 g of water phase, mix well, and the mass ratio of N,N'-dimethylformamide to water phase 1:10, under the protection of nitrogen, use a constant pressure dropping funnel to drop the mixture of N,N'-dimethylformamide and water phase at a rate of 10 drops / min and stir at a rate of 250 rpm In 40g of the oil phase, the mass ratio of the water phase to the oil phase was 1:2, the temperature was raised to 70°C, and the reaction was carried out at constant temperature for 5 hours. Other step...
Embodiment 3
[0058] In step 1 of preparing the water phase in this example, 5.0 g of acrylamide, 0.8 g of ammonium persulfate, and 2.0 g of N,N′-methylenebisacrylamide were added to 35 g of deionized water, and acrylamide, ammonium persulfate, The mass ratio of N,N'-methylene bisacrylamide to deionized water is 1:0.16:0.4:7, stirred until the solid is completely dissolved, and prepared into 42.8 g of water phase. In step 3 of preparing macroporous polyacrylamide resin, add 1.0 g of N, N'-dimethylformamide to 40 g of water phase, mix well, and the mass ratio of N, N'-dimethylformamide to water phase 1:40, under the protection of nitrogen, use a constant pressure dropping funnel to drop the mixture of N, N'-dimethylformamide and the water phase at a rate of 10 drops / min and stir at a rate of 250 rpm In 160g of the oil phase, the mass ratio of the water phase to the oil phase was 1:4, the temperature was raised to 70°C, and the reaction was carried out at a constant temperature for 5 hours. ...
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