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Preparation method for cotton fabric with bactericidal and bacteriostatic functions, and prepared fabric

A cotton fabric and functional technology, applied in biochemical fiber treatment, textiles and papermaking, fiber treatment, etc., can solve the problems of undiscovered antibacterial fabrics, unfit personal clothing, and fabrics that are not washable, so as to reduce property losses and have good antibacterial effects , good hygienic effect

Inactive Publication Date: 2018-11-09
RUGAO LANTU KNITTING CLOTHING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the existing antibacterial fabrics are chemically synthesized fabrics, which are not comfortable enough to be used as close-fitting clothing; there are also built-in silver ion antibacterial fabrics, which use spinning-grade antibacterial technology to directly put antibacterial agents into chemical fibers , but silver ions have strong neurotoxicity, which is not conducive to human health; there is also the fabric soaked in traditional Chinese medicine liquid, but this fabric is not washable, and it loses its antibacterial effect after being washed many times
At present, there is no research on the preparation of antibacterial fabrics by grafting antibacterial ingredients of traditional Chinese medicine with fabrics

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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  • Preparation method for cotton fabric with bactericidal and bacteriostatic functions, and prepared fabric
  • Preparation method for cotton fabric with bactericidal and bacteriostatic functions, and prepared fabric

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Extract berberine: crush 1kg of berberine into powder, pass through a 40-mesh sieve, add 6kg of ethanol aqueous solution with a mass fraction of 45%, and conduct ultrasonic extraction for 1.5 hours at a temperature of 75°C. The ultrasonic frequency is 28KHZ. After extraction, filter and take the filtrate. To obtain the berberine extract, add concentrated hydrochloric acid to adjust the pH=2, stir continuously, cool down to 5°C, let it stand for 16 hours, filter to obtain crude product crystals, recrystallize with water, and filter to obtain 11.6 g of berberine;

[0031] Preparation of antibacterial fabric: take 240g of cotton fiber, place it in 4.8kg of NaOH aqueous solution with a pH of 8.5, and soak it for 1 hour at a water bath temperature of 35°C; wash the soaked cotton fiber to neutral, add 4.8g of berberine, Add water, bath ratio 1:20, feed nitrogen, react at 60°C for 10 minutes, then raise to 80°C at 2°C / min, keep warm for 20 minutes, take it out and dry at 60°C ...

Embodiment 2

[0033] Extract berberine: crush 1kg of berberine into powder, pass through a 40-mesh sieve, add 5kg of ethanol aqueous solution with a mass fraction of 40%, and conduct ultrasonic extraction for 1 hour at a temperature of 70°C, with an ultrasonic frequency of 25KHZ. After extraction, filter and take the filtrate. To obtain the berberine extract, add concentrated hydrochloric acid to adjust the pH=1, stir continuously, cool down to 0°C, let it stand for 12 hours, filter to obtain crude product crystals, recrystallize with water, and obtain 9.4 g of berberine by filtration;

[0034] Preparation of antibacterial fabrics: Weigh 240g of cotton fiber, place it in 4.8kg of NaOH aqueous solution with a pH of 8.5, and soak it for 1 hour at a water bath temperature of 30°C; wash the soaked cotton fiber to neutral, add 5g of berberine, add water , bath ratio 1:20, feed nitrogen, react at 60°C for 10 minutes, then increase to 80°C at 2°C / min, keep warm for 20 minutes, take it out and place...

Embodiment 3

[0036] Extract berberine: crush 1kg of berberine into powder, pass through a 40-mesh sieve, add 8kg of ethanol aqueous solution with a mass fraction of 50%, and conduct ultrasonic extraction for 2 hours at a temperature of 80°C. The ultrasonic frequency is 40KHZ. After extraction, filter and take the filtrate. To obtain the berberine extract, add concentrated hydrochloric acid to adjust the pH=1.5, stir continuously, cool down to 10°C, let stand for 24 hours, filter to obtain crude product crystals, recrystallize with water, and filter to obtain 10.7 g of berberine;

[0037] Preparation of antibacterial fabric: take 240g of cotton fiber, place it in 4.8kg of NaOH aqueous solution with a pH of 8.5, and soak it for 1.5 hours at a water bath temperature of 40°C; wash the soaked cotton fiber to neutral, add 7g of berberine, add water , bath ratio 1:20, feed nitrogen, react at 60°C for 10 minutes, then increase to 80°C at 2°C / min, keep warm for 20 minutes, take it out and place it i...

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 discloses a preparation method for a cotton fabric with bactericidal and bacteriostatic functions, and the prepared fabric, belonging to the field of textile technology. The preparationmethod comprises the following steps: extracting berberine from coptis; weighing cotton fibers, placing the cotton fibers in an aqueous NaOH solution with a pH value of 8.5, and carrying out soaking at a temperature of 30-40 DEG C; then carrying out washing until the cotton fibers are neutral, adding berberine according to a mass ratio of the cotton fibers to berberine of 100: (1-3), setting a bath ratio of 1: 20, introducing nitrogen, and successively carrying out temperature-regulated reactions, washing and drying so as to obtain the antibacterial cotton fabric. The bactericidal cotton fabric prepared in the invention has good bactericidal and bacteriostatic action and a wide antibacterial spectrum, can maintain excellent characteristics for a long time, is washable, and maintains good antibacterial effect after repeated washing.

Description

technical field [0001] The invention belongs to the technical field of textiles, and more specifically relates to a method for preparing a cotton fabric with bactericidal and antibacterial functions and the resulting fabric. Background technique [0002] Because cotton fabric is soft, breathable, sweat-absorbing, and does not hurt the skin, it is often used as a pajamas fabric. As a close-fitting fabric, it can bring people a stable and comfortable sleep. Cotton fiber is a porous substance, and its cellulose macromolecules There are many hydrophilic genes (-OH) on the fiber, so its hygroscopicity is better. Under general atmospheric conditions, the moisture regain of cotton fiber can reach about 8.5%. But cotton fabric has no bactericidal and antibacterial effect. In addition to water and salt, human sweat also contains lactic acid and urea. After the cotton fabric absorbs sweat, bacteria multiply and decompose keratin, plus urea and lactic acid in sweat, which will emit a ...

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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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/00D06M11/38D06M101/06
CPCD06M13/00D06M11/38D06M16/00D06M2101/06
Inventor 袁德梅
Owner RUGAO LANTU KNITTING CLOTHING CO LTD
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