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A method for preparing porous materials based on wool keratin cortex cells

A wool keratin and porous material technology, applied in the field of polymer material preparation, can solve problems such as difficulty in toughening with L-polylactic acid film, and achieve the effects of strong directional degradation, simple method and efficient separation

Active Publication Date: 2020-04-07
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the wool fiber diameter is as high as 20 μm, which is difficult to be used for the toughening of L-PLA film

Method used

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  • A method for preparing porous materials based on wool keratin cortex cells
  • A method for preparing porous materials based on wool keratin cortex cells
  • A method for preparing porous materials based on wool keratin cortex cells

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Embodiment 1: a kind of preparation method of wool keratin cortex cell, the steps are as follows:

[0057] Step 1. Use calcium hypochlorite / hydrogen peroxide to remove the wool surface scale layer:

[0058] (1) Soak the waste rough wool in water at 25°C, the solid-to-liquid ratio is 1:25, soak the wool thoroughly, and add calcium hypochlorite Ca(ClO) with an active chlorine content of 70% 2 ·3H 2 O, standing for 5 minutes to obtain system A; wherein the amount of calcium hypochlorite added is 5% of the wool quality.

[0059] (2) slowly adding mass fraction in system A is 30% hydrogen peroxide, sodium pyrophosphate as peroxide stabilizer, ethylenediaminetetraacetic acid as peroxide chelating agent to form system B; Treat under constant temperature conditions for 20 minutes to make the wool react with hypochlorite and peroxide; wherein, based on the volume of the solution in system A, the amount of hydrogen peroxide with a mass fraction of 30% is 14ml / L, and the coke T...

Embodiment 2

[0069] Embodiment 2: a kind of preparation method of wool keratin cortex cell, the steps are as follows:

[0070] Step 1. Use calcium hypochlorite / hydrogen peroxide to remove the wool surface scale layer:

[0071] (1) Soak the waste fine wool in water at 20°C, the solid-to-liquid ratio is 1:20, soak the wool thoroughly, and add calcium hypochlorite Ca(ClO) with an active chlorine content of 70% 2 ·3H 2 O, stand still for 5 minutes to obtain system A; wherein the added amount of calcium hypochlorite is 3% of the wool quality.

[0072] (2) Slowly add hydrogen peroxide, sodium pyrophosphate as a peroxide stabilizer, and ethylenediaminetetraacetic acid as a peroxide chelating agent in system A to form system B; Treat under constant temperature conditions for 20 minutes to make wool react with hypochlorite and peroxide; wherein, based on the volume of the solution in system A, the mass fraction of 30% hydrogen peroxide is added in an amount of 10ml / L, The added amount of sodium ...

Embodiment 3

[0093] Embodiment 3: A method for preparing porous materials based on wool keratin cortex cells, the specific steps are as follows:

[0094] Step 1, using wool keratin cortex cells as raw materials, preparing an aqueous suspension of cortex cells with a mass percentage of 5%;

[0095] Step 2: Add glutaraldehyde to the aqueous suspension of cortical cells, the quality of glutaraldehyde in the mixed solution is respectively 0.15%, 0.8% and 1.5% of the mass of wool keratin cortical cells, and magnetically stir for 10 minutes to obtain three homogeneous milky white suspension;

[0096] Step 3. Quickly freeze the milky white suspension at -40°C for 10 hours, and then vacuum freeze-dry for 36 hours;

[0097] Step 4: Put the vacuum freeze-dried sample in an oven at 180° C. for 2 hours, and cross-link keratin with glutaraldehyde to obtain three kinds of porous materials of wool cortex cells.

[0098] Carry out following analysis for the experimental result of embodiment 3:

[0099]...

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Abstract

The invention provides a method for preparing a porous material on the basis of wool keratin cortex cells, and belongs to the field of preparation of a high molecular material. The method comprises the steps of: firstly, preparing cortex cell aqueous suspension by taking the wool keratin cortex cells as a raw material; then adding glutaraldehyde into the cortex cell aqueous suspension, and carrying out magnetic stirring to obtain uniform milk white suspension; then rapidly placing the milk white suspension at a temperature of minus 40 DEG C to freeze, and then carrying out vacuum freezing drying; and finally, placing a sample after vacuum freezing drying into a baking oven to bake, and enabling the glutaraldehyde and keratin to be cross-linked so as to obtain the wool cortex cell porous material. According to the invention, the porous material with a large gap is prepared with the simple method, can be used in the fields of heat preservation, heat insulation, damping and the like, andbelongs to the technical field of the high molecular material.

Description

technical field [0001] The invention belongs to the field of polymer material preparation, and in particular relates to a method for preparing porous materials based on wool keratin cortex cells. Background technique [0002] With the continuous development of society, people's demand for environmentally friendly materials is increasing. In recent years, renewable and degradable natural polymer materials have received extensive attention. Waste wool keratin is a typical type of highly cross-linked protein, which has the advantages of good water resistance and stability, small thermal conductivity (good heat insulation performance), sound insulation, non-combustibility, and good elasticity. About 1 million tons of waste wool keratin is produced in my country every year, most of which are landfilled and not fully utilized. Waste wool keratin has the following main sources: (1) wool textile consumption field; (2) wool textile processing field: various waste 100% wool fibers a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/28C08J3/24C08L67/04C08L89/00C08J5/18C12N5/071
CPCC08J3/24C08J5/18C08J9/286C08J2367/04C08J2489/00C12N5/0627
Inventor 侯秀良林圣铭贾菲马博谋
Owner JIANGNAN UNIV
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