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Super-hydrophobic and antibacterial natural cellulose fabric and preparation method thereof

A natural cellulose and super-hydrophobic technology, applied in fiber treatment, plant fiber, biochemical fiber treatment, etc., can solve the problems of poor fabric washability, high price, environmental threat, and large amount of chemicals, and achieve good stability, The effect of being convenient for industrialized production and the preparation method is simple

Active Publication Date: 2021-06-04
ANHUI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, low surface energy substances such as long-chain perfluorinated compounds commonly used in existing methods are expensive and pose environmental threats, while organosilicon materials are mostly imported and costly
In the antibacterial finishing of fabrics, there are mainly inorganic antibacterial agent finishing, organic antibacterial agent finishing and natural antibacterial agent finishing, but in the prior art, there are problems such as large amount of chemicals or poor antibacterial durability.
With the improvement of living standards and hygiene awareness, more and more attention has been paid to the hydrophobic and antibacterial finishing of natural cellulose fibers and their products. The above-mentioned problems such as poor washability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Super-hydrophobic and antibacterial natural cellulose fabric and preparation method thereof
  • Super-hydrophobic and antibacterial natural cellulose fabric and preparation method thereof
  • Super-hydrophobic and antibacterial natural cellulose fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Set the specification to 150g / m 2 The natural cellulose cotton fabric was added to 15g / L NaOH solution at a bath ratio of 1:30 (w / v), the solution was heated to 90°C and stirred for 80 minutes, the natural cellulose cotton fabric was taken out and washed several times, and then aired dry, spare;

[0030] (2) Dissolve 4mg / mL dopamine in the buffer, control the pH value to 8.5, then add 25mmol / L CuSO 4 and 30mmol / L H 2 o 2 Composed of oxidation system, stir quickly to fully dissolve dopamine; (w / v)

[0031] (3) The alkali-treated natural cellulose cotton fabric is quickly immersed in the dopamine solution containing the oxidation system at a bath ratio of 1:50, reacted at 25°C for 50 minutes, washed and dried several times, and soaked in 1M NaOH for 20 minutes. Repeat the treatment once more in the dopamine reaction solution, take it out, wash it thoroughly, and finally dry it at 60°C for 5 hours to obtain a superhydrophobic antibacterial natural cellulose cotton ...

Embodiment 2

[0038] (1) Set the specification to 160g / m 2The natural cellulose hemp fabric is added to 25g / L NaOH solution at a bath ratio of 1:30 (w / v), the solution is heated to 80°C and stirred for 80 minutes, the natural cellulose hemp fabric is taken out and washed several times, and then aired dry, spare;

[0039] (2) Dissolve 3mg / mL dopamine in the buffer, control the pH value to 9, then add 18mmol / L CuSO 4 and 24mmol / L H 2 o 2 Composed of oxidation system, stir quickly to fully dissolve dopamine;

[0040] (3) Rapidly immerse the pretreated natural cellulose hemp fabric in a dopamine solution containing an oxidation system at a bath ratio of 1:50 (w / v), react at 30°C for 40 minutes, wash and dry it several times, and immerse it in 1M NaOH for 15 minutes , after washing, repeat the treatment once more in the above-mentioned dopamine reaction solution, take it out, wash it thoroughly, and finally dry it at 50° C. for 6 hours to obtain a superhydrophobic antibacterial natural cellu...

Embodiment 3

[0042] (1) Set the specification to 180g / m 2 The natural cellulose cotton fabric is added to 25g / L NaOH solution at a bath ratio of 1:30 (w / v), the solution is heated to 90°C and stirred for 80min, the natural cellulose cotton fabric is taken out and washed several times, and then aired dry, spare;

[0043] (2) Dissolve 6mg / mL dopamine in the buffer, control the pH value to 9, then add 30mmol / L CuSO 4 and 30mmol / L H 2 o 2 Composed of oxidation system, stir quickly to fully dissolve dopamine;

[0044] (3) Rapidly immerse the pretreated fabric in a dopamine solution containing an oxidation system at a bath ratio of 1:50, react at 45°C for 30 minutes, wash and dry it several times, and soak it in 1M NaOH for 15 minutes. Repeat the treatment once more in the solution, take it out, wash it thoroughly, and finally dry it at 60°C for 6 hours to obtain a superhydrophobic antibacterial natural cellulose cotton fabric.

[0045] attached image 3 It is to use the method of the pres...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention provides a super-hydrophobic and antibacterial natural cellulose fabric and a preparation method thereof. The super-hydrophobic and antibacterial natural cellulose fabric specifically comprises a natural cellulose fabric; a polydopamine super-hydrophobic coating is adhered to the surface of the natural cellulose fabric; and an ion chelating layer is adhered between the natural cellulose fabric and the polydopamine super-hydrophobic coating. The method comprises the steps of adding the natural cellulose fabric into an alkali solution, performing heating and stirring, performing water washing for multiple times, and performing airing for later use; and dissolving dopamine in a buffer solution, adding a Cu<2+> / H2O2 oxidation system, performing rapid stirring for full dissolution, immersing the fabric in a dopamine solution, carrying out an oscillating reaction, performing multiple times of washing and drying, immersing the fabric in alkali liquor, performing cleaning, performing treatment in the dopamine solution again, taking out the fabric, and performing full washing and drying. The method is easy to operate and mild in reaction condition; the alkali liquor can be recycled; the main raw materials are environmentally friendly, easy to obtain and low in cost; industrial production is facilitated; and the prepared super-hydrophobic and antibacterial natural cellulose fabric has stable super-hydrophobic and antibacterial effects.

Description

technical field [0001] The invention relates to the technical field of textile processing, in particular to a superhydrophobic and antibacterial natural cellulose fabric and a preparation method thereof. Background technique [0002] Natural cellulose is the most abundant natural polymer in nature. Its fiber and its products have the advantages of soft hand feeling, good moisture absorption and air permeability, warmth retention, comfortable wearing, and good biocompatibility, etc., and have always been favored by people. With the development of science and technology, the connotation of the traditional textile industry is constantly changing and becoming more abundant. In the new era, people's requirements for textiles are gradually increasing, hoping that they can have more functions to meet specific needs. Natural cellulose fabric is a kind of hydrophilic and porous material. It is easy to be stained, susceptible to bacteria and microorganisms during the wearing process. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D06M15/61D06M11/38D06M101/06
CPCD06M15/61D06M11/38D06M16/00D06M2101/06D06M2200/12
Inventor 王浩袁亮刘娜陈泽世许云辉焦晨璐
Owner ANHUI AGRICULTURAL UNIVERSITY
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