A kind of amyloid nanocellulose composite film and its preparation method and application

An amyloid and nanocellulose technology, applied in chemical instruments and methods, membranes, membrane technology, etc., can solve the problems of high cost, no separation membrane, excessive energy and time consumption, etc., to enhance the repelling ability, promote Separation and good biodegradability

Active Publication Date: 2022-03-15
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods are usually costly and consume excessive energy and time
In the current research, there is no separation membrane that can both remove human toxins and purify water pollutants quickly and efficiently

Method used

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  • A kind of amyloid nanocellulose composite film and its preparation method and application
  • A kind of amyloid nanocellulose composite film and its preparation method and application
  • A kind of amyloid nanocellulose composite film and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] LYS / TOCN nanocomposites were prepared by in situ synthesis of amyloid lysozyme nanospheres on the surface of TOCNs. TOCN suspension (0.5wt%), lysozyme (2mg mL -1 , the solvent is the 10mM HEPES buffer of pH 7.2), TCEP buffer (50mM, the solvent is the 10mM HEPES buffer of pH 7.0), is added in the reaction vessel in proportion, makes the quality of lysozyme be the total amount of lysozyme and TOCN 2wt%. The reaction was stirred (400 rpm) at room temperature under an air atmosphere for 1 h. Finally, the resulting amyloid nanocellulose aqueous dispersion was stored at 4°C.

[0031] The composite amyloid nanocellulose aqueous dispersion was filtered through a common filter membrane with a pore size of 0.22 μm, dried at 40°C for 10 minutes to remove water, and finally peeled off from the MCE carrier to obtain a self-supporting 22.5g m -2 The LYS / TOCN composite film.

[0032] Separation test using the obtained composite membrane:

[0033] The membrane was used for the dy...

Embodiment 2～3

[0039] The preparation method is the same as that of Example 1, except that the mass of lysozyme in the composite film is 4wt% and 30wt% of the total amount of lysozyme and TOCN, respectively.

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Abstract

The invention relates to an amyloid nano-cellulose composite film and its preparation method and application. The composite film material includes cellulose nanofibers and amyloid oligomers attached to the surface of the cellulose nanofibers. In this application, lysozyme-functionalized TOCN nanocomposites were prepared by in situ synthesis of amyloid oligomers on the surface of TOCNs. The multifunctional groups interact with toxins from water pollutants or the human body. The obtained LYS / TOCN composite membrane can retain molecules, particles, heavy metal ions, and bilirubin larger than 3nm, and can also enhance the repelling ability of boron to promote separation.

Description

technical field [0001] The invention relates to a multifunctional amyloid nanocellulose composite separation membrane, a preparation method and application thereof, and belongs to the fields of chemical engineering and polymer functional materials. Background technique [0002] Toxin removal and wastewater purification are research hotspots of membrane separation technology. Industrial development, factory waste discharge, energy production and mining have led to a dramatic increase in environmental pollutants. Water pollution and the resulting excess of toxins in the human body have become the main culprits of illness and death for millions of people around the world. The main pollutants present in the water are heavy metal ions such as boron - a notoriously toxic solute, oil spills and various toxic small molecule dyes. Excessive toxins such as bilirubin in the body. Traditional separation techniques for treating wastewater include chemical precipitation, chemical reduct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D67/00B01D69/02B01D69/12B01D71/10C02F1/44C02F101/20
CPCB01D71/10B01D67/0002B01D69/02B01D69/12C02F1/44C02F2101/20B01D2325/24B01D2325/30
Inventor 常春雨黄亚男
Owner WUHAN UNIV
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