Method for preparing super absorbent resin by carboxymethyl bagasse
A technology of superabsorbent resin and bagasse, which is applied in the direction of chemical instruments and methods, applications, organic fertilizers, etc., can solve the problems of large usage, increased synthesis cost of superabsorbent resin, difficulty in popularization and application of superabsorbent resin, etc., to achieve water absorption Fast speed, low synthesis cost, and the effect of omitting acidification and washing processes
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Embodiment 1
[0015] Example 1: Weigh 2.5g of carboxymethyl bagasse, measure 25ml of deionized water, and fully stir the above materials. Weigh 6.67g of sodium hydroxide, measure 20ml of deionized water, and prepare a sodium hydroxide solution. Under the conditions of ice-water bath cooling and stirring, 15g (14.3ml) of acrylic acid was neutralized with the prepared sodium hydroxide solution. Add 75mg of potassium persulfate initiator, 30mg of N,N'-methylenebisacrylamide crosslinking agent and neutralized acrylic acid and its sodium salt solution into the reaction bottle, and stir at room temperature for half an hour under nitrogen protection. Mix it well. At the same time, the heating rate is controlled, so that the temperature of the water bath is raised slowly, so that the reaction is fully carried out, and the stirring is stopped when the polymerization temperature is reached. Thereafter, the temperature was gradually raised. When the temperature of the water bath was 90°C-100°C, the ...
Embodiment 2
[0016] Example 2: Weigh 2.5g of carboxymethyl bagasse, measure 25ml of deionized water, and fully stir the above materials. Weigh 4.17g of sodium hydroxide, measure 20ml of deionized water, and prepare a sodium hydroxide solution. Under the conditions of ice-water bath cooling and stirring, 15g (14.3ml) of acrylic acid was neutralized with the prepared sodium hydroxide solution. Add 100mg of potassium persulfate initiator, 50mg of N,N'-methylenebisacrylamide crosslinking agent and neutralized acrylic acid and its sodium salt solution into the reaction flask, and stir at room temperature for half an hour under nitrogen protection. Mix it well. At the same time, the heating rate is controlled, so that the temperature of the water bath is raised slowly, so that the reaction is fully carried out, and the stirring is stopped when the polymerization temperature is reached. Thereafter, the temperature was gradually raised. When the temperature of the water bath was 90°C-100°C, the ...
Embodiment 3
[0017] Example 3: Weigh 2.5g of carboxymethyl bagasse, measure 25ml of deionized water, and fully stir the above materials. Weigh 5.83g of sodium hydroxide, measure 20ml of deionized water, and prepare a sodium hydroxide solution. Under the conditions of ice-water bath cooling and stirring, 17.5g (16.7ml) of acrylic acid was neutralized with the prepared sodium hydroxide solution. Add 100mg of potassium persulfate initiator, 43mg of N,N'-methylenebisacrylamide crosslinking agent and neutralized acrylic acid and its sodium salt solution into the reaction bottle, and stir at room temperature for half an hour under nitrogen protection. Mix it well. At the same time, the heating rate is controlled, so that the temperature of the water bath is raised slowly, so that the reaction is fully carried out, and the stirring is stopped when the polymerization temperature is reached. Thereafter, the temperature was gradually raised. When the temperature of the water bath was 90°C-100°C, t...
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