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Nano-chitosan-modified cotton fiber and preparation method thereof

A technology of nano-chitosan and cotton fiber, which is applied in the direction of plant fiber, fiber treatment, light-resistant fiber, etc., can solve the problems of lack, weak wash fastness, cotton fiber antibacterial, and persistent deterioration of anti-ultraviolet performance, etc. Achieve the effect of stable thermodynamic performance, not easy to fall off, and long-lasting anti-ultraviolet performance

Active Publication Date: 2020-07-14
安徽省农业科学院棉花研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there is a lack of strong force combination between nano-chitosan and cotton fiber, and its washing fastness is weak, resulting in poor antibacterial and anti-ultraviolet properties of cotton fiber.

Method used

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  • Nano-chitosan-modified cotton fiber and preparation method thereof
  • Nano-chitosan-modified cotton fiber and preparation method thereof
  • Nano-chitosan-modified cotton fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of preparation method of nano-chitosan modified cotton fiber, comprises the steps:

[0030] S1, 10kg cotton fiber is sent into 120kg concentration and is 0.5mol / L sodium hydroxide solution, stirs 40min at 80 ℃, washes with deionized water, dries, sends into 120kg mass fraction and is 2.13% sodium periodate solution, Stir in the dark for 20 minutes to obtain activated cotton fibers;

[0031] S2. Dissolve 1 kg of sodium carboxymethyl cellulose with a degree of substitution of 0.2 in 5 kg of deionized water, add 0.2 kg of white carbon black to the ball mill and disperse it for 30 minutes during the stirring process, and the ball mill speed is 800 r / min to obtain a particle size of 0.15 μm and a viscosity Cellulose dispersant with 10mPa.s and 90% centrifugal stability;

[0032] Mix 4kg of nano-chitosan, 0.1kg of cellulose dispersant, and 40kg of acetic acid evenly, add 1kg of isopropyl triisostearyl titanate, stir at 50°C for 20 minutes, add 20kg of ethyl orthosilic...

Embodiment 2

[0036] A kind of preparation method of nano-chitosan modified cotton fiber, comprises the steps:

[0037] S1, 20kg cotton fiber is sent into 80kg concentration and is 0.8mol / L sodium hydroxide solution, 70 ℃ of stirring 60min, washes with deionized water, oven dry, sends into 80kg mass fraction and is 4.32% sodium periodate solution, Stir in the dark for 50 minutes to obtain activated cotton fibers;

[0038] S2. Dissolve 1 kg of sodium carboxymethyl cellulose with a degree of substitution of 0.4 in 3 kg of deionized water, add 0.4 kg of white carbon black to the ball mill and disperse it for 10 min during the stirring process, and the ball mill speed is 1000 r / min to obtain a particle size of 0.1 μm and a viscosity of 0.1 μm. Cellulose dispersant with 14mPa.s and 88% centrifugal stability;

[0039] Mix 2kg of nano-chitosan, 0.5kg of cellulose dispersant, and 20kg of acetic acid evenly, add 2kg of isopropyl triisostearyl titanate, stir at 40°C for 40 minutes, add 10kg of ethyl...

Embodiment 3

[0043] A kind of preparation method of nano-chitosan modified cotton fiber, comprises the steps:

[0044]S1, 12kg cotton fiber is sent into 110kg concentration and is 0.6mol / L sodium hydroxide solution, 77 ℃ of stirring 45min, washes with deionized water, dries, sends into 110kg mass fraction and is 2.46% sodium periodate solution, Stir in the dark for 30 minutes to obtain activated cotton fibers;

[0045] S2, 1 kg of sodium carboxymethyl cellulose with a degree of substitution of 0.25 was dissolved in 4.5 kg of deionized water, and 0.25 kg of white carbon black was added to the ball mill to disperse for 25 min during the stirring process, and the ball mill speed was 850 r / min to obtain a particle size of 0.14 μm, A cellulose dispersant with a viscosity of 11mPa.s and a centrifugal stability of 89.5%;

[0046] Mix 3.5kg of nano-chitosan, 0.2kg of cellulose dispersant, and 35kg of acetic acid evenly, add 1.3kg of isopropyl triisostearyl titanate, stir at 48°C for 25 minutes, a...

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Abstract

The invention discloses a nano-chitosan-modified cotton fiber and a preparation method of the nano-chitosan-modified cotton fiber. The preparation method of the nano-chitosan-modified cotton fiber comprises the steps: the cotton fiber is sent into a sodium hydroxide solution to be stirred, washed and dried, and sent into a sodium periodate solution to be stirred away from light to obtain an activated cotton fiber; nano chitosan, a cellulose dispersing agent and acetic acid are evenly mixed, isopropyl triisostearoyltitanate is added to be stirred, under the stirring state, tetraethylortho silicate is added, stirring is continued, and vacuum defoamation is conducted to obtain a pretreated nano chitosan solution; and the activated cotton fiber is steeped in the pretreated nano chitosan solution to be subjected to pulsed microwave treatment, filtered, and aired at the room temperature to obtain the nano-chitosan-modified cotton fiber. The cotton fiber is modified through the nano chitosanand thus has a good heat-insulating foundation and excellent antibacterial and anti-ultraviolet properties, the method is environmentally friendly, and the nano-chitosan-modified cotton fiber can be applied to the fields of medical health and antibacterial fabrics.

Description

technical field [0001] The invention relates to the technical field of cotton fiber modification, in particular to nano chitosan modified cotton fiber and its preparation and application. Background technique [0002] Cotton fiber is loved by consumers for its excellent properties such as moisture absorption, breathability, comfort, softness, warmth retention, renewable and degradable. However, compared with synthetic fibers, the functionality of cotton fibers is still insufficient. Cotton fiber has the characteristics of large specific surface area and strong moisture absorption capacity, so it is easy to attach, reproduce and spread microorganisms during consumption, resulting in the decline of cotton fiber strength, stains, fading and odor, and even the spread of diseases, affecting human health. [0003] At the same time, excessive ultraviolet radiation can cause skin damage, aging, and even cancer. Therefore, in order to fully explore the potential functions of cotton...

Claims

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Application Information

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IPC IPC(8): D06M10/10D06M10/08D06M10/06D06M11/38D06M11/30D06M101/06
CPCD06M10/10D06M10/08D06M10/06D06M16/00D06M11/38D06M11/30D06M2101/06D06M2200/25
Inventor 叶泗洪邓小楠白雪程邦进李常凤刘方志闫晓明
Owner 安徽省农业科学院棉花研究所
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