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

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

Example Embodiment

[0028] Example 1

[0029] A preparation method of nano-chitosan modified cotton fiber includes the following steps:

[0030] S1. Send 10kg cotton fiber into 120kg 0.5mol / L sodium hydroxide solution, stir at 80℃ for 40min, wash with deionized water, dry, and send 120kg sodium periodate solution with a mass fraction of 2.13%. Stir in the dark for 20 minutes to obtain activated cotton fiber;

[0031] S2. Dissolve 1kg of sodium carboxymethylcellulose with a degree of substitution of 0.2 in 5kg of deionized water, add 0.2kg of white carbon black to the ball mill and disperse for 30 minutes during the stirring process, and the ball mill speed is 800r / min to obtain a particle size of 0.15μm and a viscosity A 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, add 1kg of isopropyl triisostearoyl titanate, stir at 50°C for 20min, add 20kg of tetraethyl orthosilicate while stirring, continue...

Example Embodiment

[0035] Example 2

[0036] A preparation method of nano-chitosan modified cotton fiber includes the following steps:

[0037] S1. 20kg cotton fiber is fed into 80kg 0.8mol / L sodium hydroxide solution, stirred at 70°C for 60min, washed with deionized water, dried, and fed into 80kg sodium periodate solution with a mass fraction of 4.32%, Stir in the dark for 50 minutes to obtain activated cotton fiber;

[0038] S2. Dissolve 1kg of sodium carboxymethylcellulose with a degree of substitution of 0.4 in 3kg of deionized water, add 0.4kg of white carbon black to the ball mill and disperse for 10 minutes during the stirring process, and the ball mill speed is 1000r / min to obtain a particle size of 0.1μm and viscosity It is a 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, add 2kg of triisostearoyl isopropyl titanate, stir at 40°C for 40min, add 10kg of tetraethyl orthosilicate while st...

Example Embodiment

[0042] Example 3

[0043] A preparation method of nano-chitosan modified cotton fiber includes the following steps:

[0044] S1. Send 12kg of cotton fiber into 110kg of 0.6mol / L sodium hydroxide solution, stir at 77°C for 45min, wash with deionized water, dry, and send 110kg of sodium periodate solution with a mass fraction of 2.46%. Stir in the dark for 30 minutes to obtain activated cotton fiber;

[0045] S2. Dissolve 1 kg of sodium carboxymethyl cellulose with a degree of substitution of 0.25 in 4.5 kg of deionized water, add 0.25 kg of white carbon black to the ball mill and disperse for 25 min during the stirring process, and the ball mill speed is 850r / min to obtain a particle size of 0.14 μm. A cellulose dispersant with a viscosity of 11 mPa.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, add 1.3kg of isopropyl triisostearoyl titanate, stir at 48°C for 25min, add 17kg of tetraethyl orthosilica...

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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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