Binary blend for adsorbing dyeing agent and preparation method thereof
A technology of binary blends and dyes, applied in water pollutants, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problem of high crystallinity, achieve excellent adsorption performance, easy operation and simple preparation method Effect
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[0016] A method for preparing a binary blend for adsorbing dyes, comprising: adding a chitosan solution with a mass fraction of 8-12 mg / ml and a gelatin solution with a mass fraction of 8-12 mg / ml in an amount of 1 -4:1-4 after blending and drying; further, chitosan solution and gelatin solution are blended according to the addition amount of 2-3:2-3; further, chitosan solution and gelatin solution The amount of addition is 2:3 for better adsorption.
[0017] Among them, chitosan solution, also known as deacetylated chitin, is a kind of 2-acetylamino-2-deoxy-D glucopyranose formed by linking chitin deacetylated products through β-D-1,4 glycosidic bonds. Linear polymers are rich in sources, insoluble in water and common organic solvents, and have the characteristics of good mechanical properties and stable chemical properties. Chitosan is non-toxic and has various biological activities. The antioxidant activity of chitosan depends on its molecular weight and the degree of dea...
Embodiment 1
[0025] This embodiment provides a method for preparing a binary blend for adsorbing dyes, including:
[0026] First, weigh 1g of chitosan in a 100ml beaker with a balance, then add 50ml of 2% acetic acid solution, stir gently, and slowly add distilled water to 100ml, then let it stand for 0.3h to fully swell; A chitosan solution with a mass fraction of 10 mg / ml.
[0027] Next, use a balance to weigh 1g of gelatin in a 100ml beaker, then add 50ml of 2% acetic acid solution, stir gently, and slowly add distilled water to 100ml, then let it stand for 10min to fully swell; then at 50°C- Stir in a water bath at 60°C for 0.3 h; prepare a gelatin solution with a mass fraction of 10 mg / ml.
[0028] The above-mentioned chitosan solution with a mass fraction of 10 mg / ml and the gelatin solution with a mass fraction of 10 mg / ml were blended according to the addition amount of 1:4 and dried at 40 ° C for 12 hours to obtain a dihydrocarbon for adsorbing dyes. meta blends.
Embodiment 2
[0030] This embodiment provides a method for preparing a binary blend for adsorbing dyes, including:
[0031] First, weigh 1g of chitosan in a 100ml beaker with a balance, then add 50ml of 2% acetic acid solution, stir gently, and slowly add distilled water to 100ml, then let it stand for 0.3h to fully swell; A chitosan solution with a mass fraction of 10 mg / ml.
[0032] Next, use a balance to weigh 1g of gelatin in a 100ml beaker, then add 50ml of 2% acetic acid solution, stir gently, and slowly add distilled water to 100ml, then let it stand for 10min to fully swell; then at 50°C- Stir in a water bath at 60°C for 0.3 h; prepare a gelatin solution with a mass fraction of 10 mg / ml.
[0033] The above-mentioned chitosan solution with a mass fraction of 10 mg / ml and the gelatin solution with a mass fraction of 10 mg / ml were blended according to the addition amount of 2:3 and dried at 40°C for 12 hours to obtain a dihydrocarbon for adsorbing dyes. meta blends.
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