Preparation method of feather-protein-base high-water-absorptivity resin
A technology of superabsorbent resin and feather protein, which is applied in the fields of chemistry and environment, can solve the problems of poor water absorption rate, poor water absorption effect, and poor water absorption performance of superabsorbent resin, and achieve good liquid absorption capacity, good water absorption rate, Effect of wide pH range
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Embodiment 1
[0050] A preparation method of feather protein-based superabsorbent resin, the steps are as follows:
[0051] (1) Wash the chicken feathers and dry them at 70°C, then pulverize them and collect them for later use;
[0052] (2) Soak the crushed chicken feathers in a potassium hydroxide solution with a mass fraction of 0.45% at a temperature of 92°C for 1.5 hours, then cool the reaction solution to room temperature, filter out the insoluble matter with a sieve, and the filtrate is the product of feather protein. Extraction solution; the mass concentration of feather protein in the feather protein extraction solution measured by the Kjeldahl method is 0.083g / mL;
[0053] (3) Take 12ml of acrylic acid in a beaker, add 23ml of 6mol / L KOH solution to neutralize to 75% neutralization degree;
[0054] Take 24ml of the extract of feather protein prepared in step (2) and place it in a three-necked flask, add 12ml of potassium persulfate solution with a concentration of 20mg / L, and 4.8m...
Embodiment 2
[0058] As described in Example 1, the difference is that the consumption of polyvinyl alcohol has been changed:
[0059] Add 25ml of polyvinyl alcohol solution with a mass concentration of 60mg / L, and stir and react at 50°C for 45min. All the other operations, consumption are identical with embodiment 1.
[0060] After measurement, the maximum water absorption rate of the feather protein-based superabsorbent resin with semi-interpenetrating network structure in deionized water can reach 628.74g / g, and the maximum salt water absorption rate can reach 60.55g in a mass concentration of 0.9wt%NaCl solution. / g.
Embodiment 3
[0062] As described in Example 1, the difference is that the amount of cross-linking agent has been changed:
[0063] Take 24ml of the extract of feather protein obtained in step (2) and place it in a three-necked flask, add 12ml of potassium persulfate solution (20mg / L), 4.8ml of cerium ammonium nitrate solution (10mg / L), and stir the reaction at 50°C 15min; Add 4ml of sodium sulfite solution (20mg / L) and 33.3ml of acrylic acid solution with a neutralization degree of 75% to the three-necked flask. After 15min, add 33.3ml of polyvinyl alcohol solution (60mg / L), and stir the reaction at 50°C 45min; add 1ml of N,N-methylenebisacrylamide solution (20mg / L) to the three-necked flask, and stir at 70°C for 4h. All the other operations, consumption are identical with embodiment 1.
[0064] After determination, the maximum water absorption rate of the feather protein-based superabsorbent resin with semi-interpenetrating network structure can reach 568.05g / g in deionized water, and th...
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Abstract
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