Preparation method of collagen-based porous oil-absorbing material
A technology of oil-absorbing materials and collagen, applied in chemical instruments and methods, alkali metal oxides/hydroxides, inorganic chemistry, etc., can solve the problem of low oil-absorbing capacity of collagen-based oil-absorbing materials, and achieve easy recycling and reuse, hydrophobic Effect of increased lipophilicity, increased active binding sites
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Embodiment 1
[0039] Preparation of skin powder fiber
[0040] Deliming the waste after liming cowhide skins before tanning, cutting into small pieces, soaking in water to remove impurities, overnight; then soaking in acetic acid-sodium acetate with a pH value of 4.5~5.0 that is 10~20 times the weight of the hides Demineralize in buffer solution overnight; after washing with water, soak in 90% to 95% acetone solution 5 to 10 times the weight of the skin to degrease, change the liquid every 12 to 24 hours, repeat 3 to 5 times; Dry, then soak in 5-10 times of absolute ethanol for dehydration, change the liquid every 12-24 hours, repeat 3-5 times; finally take out the skins and dry them naturally, crush them, and sieve them to get 50-200 mesh skins powder fiber.
[0041] Preparation of Modified Skin Powder Fiber
[0042] The obtained 20 g skin powder fiber and 400 ~ 600 mL of pH is 8 ~ 10 sodium carbonate-sodium bicarbonate buffer solution mixed in a three-necked flask, stirred at room tempe...
Embodiment 2
[0046] Preparation of skin powder fiber
[0047] Deliming the waste after liming sheepskin slices before tanning, cutting into small pieces, soaking in water to remove impurities, overnight; then soaking in acetic acid-sodium acetate with a pH value of 4.5~5.0 that is 10~20 times the weight of the leather pieces Demineralize in buffer solution overnight; after washing with water, soak in 90% to 95% acetone solution 5 to 10 times the weight of the skin to degrease, change the liquid every 12 to 24 hours, repeat 3 to 5 times; Dry, then soak in 5-10 times of absolute ethanol for dehydration, change the liquid every 12-24 hours, repeat 3-5 times; finally take out the skins and dry them naturally, crush them, and sieve them to get 50-200 mesh skins powder fiber.
[0048] Preparation of Modified Skin Powder Fiber
[0049] The obtained 20 g skin powder fiber and 400 ~ 600 mL of pH is 8 ~ 10 sodium carbonate-sodium bicarbonate buffer solution mixed in a three-necked flask, stirred a...
Embodiment 3
[0053] Preparation of skin powder fiber
[0054] Deliming the waste after liming cowhide skins before tanning, cutting into small pieces, soaking in water to remove impurities, overnight; then soaking in acetic acid-sodium acetate with a pH value of 4.5~5.0 that is 10~20 times the weight of the hides Demineralize in buffer solution overnight; after washing with water, soak in 90% to 95% acetone solution 5 to 10 times the weight of the skin to degrease, change the liquid every 12 to 24 hours, repeat 3 to 5 times; Dry, then soak in 5-10 times of absolute ethanol for dehydration, change the liquid every 12-24 hours, repeat 3-5 times; finally take out the skins and dry them naturally, crush them, and sieve them to get 50-200 mesh skins powder fiber.
[0055] Preparation of Modified Skin Powder Fiber
[0056] The obtained 20 g skin powder fiber and 400 ~ 600 mL of pH is 8 ~ 10 sodium carbonate-sodium bicarbonate buffer solution mixed in a three-necked flask, stirred at room tempe...
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