Aminated collagen fiber adsorbing material as well as preparation method and application thereof
A collagen fiber and adsorption material technology, which is applied in the field of aminated collagen fiber adsorption material and its preparation, can solve problems such as strong interference and achieve high-efficiency adsorption
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Embodiment 1
[0049] A skin collagen fiber, raw material is pig skin, and amination reagent is ethylenediamine.
[0050] The preparation method of the skin collagen fiber is:
[0051] S1: The pig skin is pretreated and ground into 200 mesh collagen fiber powder for use;
[0052] S2: Take 20 g of collagen fiber powder and soak it in 400 mL of distilled water for 12 hours to obtain a collagen fiber soaking solution for use;
[0053] S3: Drop 0.9g of 50% glutaraldehyde into the collagen fiber soaking solution, stir and react at 35℃ for 2h, add 15% (w / w) NaHCO 3 Solution, adjust the pH of the solution to 7.0, stir and react at 50°C for 2 hours, filter, wash with distilled water and ethanol, and filter again to obtain cross-linked collagen fibers for use;
[0054] S4: Add 300 mL of distilled water and 0.1 mol of amination reagent to the cross-linked collagen fibers, first stir the reaction at 40°C for 3 hours, then heat to 55°C for 3 hours, wash with distilled water and ethanol, and filter again. After b...
Embodiment 2
[0056] A skin collagen fiber, the raw material is cowhide, and the amination reagent is iminodicarboxylate.
[0057] The preparation method of the skin collagen fiber is:
[0058] S1: After pre-processing the cowhide, ground it into 100 mesh collagen fiber powder for use;
[0059] S2: Take 15 g of collagen fiber powder and soak it in 300 mL of distilled water for 12 hours to obtain a collagen fiber soaking solution for use;
[0060] S3: Drop 1.2 g of glutaraldehyde with a mass fraction of 30% into the collagen fiber soaking solution, stir and react at 25°C for 4 hours, and add 15% (w / w) NaHCO 3 The solution, adjust the pH of the solution to 8.2, stir and react at 40°C for 4 hours, filter, wash with distilled water and ethanol, and filter again to obtain cross-linked collagen fibers for use;
[0061] S4: Add 400 mL of distilled water and 0.3 mol of amination reagent to the cross-linked collagen fibers, first stir the reaction at 50°C for 2 hours, then heat to 60°C, stir and react for 2 h...
Embodiment 3
[0063] A leather collagen fiber, the raw material is sheepskin, and the amination reagent is dimethylamide sodium salt.
[0064] The preparation method of the skin collagen fiber is:
[0065] S1: The sheepskin is pretreated and ground into 150 mesh collagen fiber powder for use;
[0066] S2: Take 17.5 g of collagen fiber powder and soak it in 350 mL of distilled water for 12 hours to obtain a collagen fiber soaking solution for use;
[0067] S3: Drop 1.1 g of glutaraldehyde with a mass fraction of 50% into the collagen fiber soaking solution, stir and react for 3 hours at 30°C, and add 15% (w / w) NaHCO 3 Solution, adjust the pH of the solution to 7.6, stir and react at 45°C for 3 hours, filter, wash with distilled water and ethanol, filter again, and obtain cross-linked collagen fibers for use;
[0068] S4: Add 350 mL of distilled water and 0.2 mol of amination reagent to the cross-linked collagen fibers, first stir the reaction at 45°C for 2.5 hours, then heat to 58°C, stir for 2.5 hour...
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