Preparation method of halamine-containing antibacterial polyacrylonitrile fiber

A polyacrylonitrile fiber and haloamine-containing technology, which is applied in fiber types, fiber treatment, bleaching products, etc., can solve the problems of reaction liquid volume expansion and long reaction time, and achieve reproducible antibacterial function, strong antibacterial function, improved sex craft simple effects

Inactive Publication Date: 2013-01-16
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Chinese patent 86100542 discloses an improved method for preparing hydrolyzed polyacrylonitrile by saponification of acrylonitrile polymers or copolymers mainly based on acrylonitrile by adding alkali. By controlling the temperature of the reaction, the volume of the reaction solution during saponification in the prior art can be solved. Issues such as swelling and long reaction times

Method used

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  • Preparation method of halamine-containing antibacterial polyacrylonitrile fiber
  • Preparation method of halamine-containing antibacterial polyacrylonitrile fiber
  • Preparation method of halamine-containing antibacterial polyacrylonitrile fiber

Examples

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example 1

[0031] Add 50ml of 2.0% sodium hydroxide aqueous solution into a 100mL beaker, then immerse 1.0g of polyacrylonitrile fiber (5.0 denier) in the above sodium hydroxide aqueous solution, raise the temperature to 90°C, and react at constant temperature for 90 minutes . Take out the fiber, wash away the residual alkali with deionized water, and then rinse it in an aqueous solution of sodium hypochlorite with an active chlorine content of 1.0% (that is, chlorine bleaching). The rinsing conditions are: chlorine bleach pH=10, rinsing at 30°C for 15 minutes. Take out the fiber and wash it with deionized water until no Cl can be detected in the washing raffinate. + . Dry in a forced air oven and weigh.

[0032] Add an appropriate amount of deionized water to a 50ml Erlenmeyer flask, add 0.1 g of potassium iodide, add 3 to 5 drops of 1.0% starch aqueous solution, and adjust the pH of the solution to 4 to 6 with 0.1N hydrochloric acid aqueous solution. Add the chlorine-bleached fiber...

example 2

[0039] Add 50ml of 5.0% sodium hydroxide aqueous solution into a 100mL beaker, then immerse 1.0g of polyacrylonitrile fiber (5.0 denier) in the above sodium hydroxide aqueous solution, raise the temperature to 90°C, and react at constant temperature for 90 minutes . Take out the fiber, wash away the residual alkali with deionized water, and then rinse it in an aqueous solution of sodium hypochlorite with an active chlorine content of 1.0%. The rinsing conditions are: chlorine bleach pH=10, rinsing at 30°C for 15 minutes. Take out the fiber and wash it with deionized water until no Cl can be detected in the washing raffinate. + . Dry in a forced air oven and weigh. The chlorine content on the fiber is measured by titration method, and the chlorine content on the fiber is calculated according to formula (1). The chlorine content of the polyacrylonitrile fibers was found to be 0.50 mg / g.

example 3

[0041] Add 50ml of 10.0% sodium hydroxide aqueous solution into a 100mL beaker, then immerse 1.0g of polyacrylonitrile fiber (5.0 denier) in the above sodium hydroxide aqueous solution, raise the temperature to 90°C, and react at constant temperature for 90 minutes . Take out the fiber, wash away the residual alkali with deionized water, and then rinse it in an aqueous solution of sodium hypochlorite with an active chlorine content of 1.0%. The rinsing conditions are: chlorine bleach pH=10, rinsing at 30°C for 15 minutes. Take out the fiber and wash it with deionized water until no Cl can be detected in the washing raffinate. + . Dry in a forced air oven and weigh. The chlorine content on the fiber was measured by titration method, and the chlorine content of the fiber was calculated according to formula (1). The chlorine content of the polyacrylonitrile fiber was 0.55 mg / g.

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Abstract

The invention relates to a preparation method of halamine-containing antibacterial polyacrylonitrile fiber, belonging to the technical field of modification of fiber fabric. The preparation process comprises the steps of: firstly, using alkaline water solution to soak the polyacrylonitrile fiber, and causing the fiber to have hydrolysis reaction and the like; generating acylamino, carboxyl, imido groups and the like on the surface of the fiber; and using hypohalite to rinse the fiber, generating halamine on the surface of the fabric so as to endow the fiber with antibiosis. The prepared polyacrylonitrile fiber has a broad spectrum antibacterial function; and after being sterilized, the fiber is rinsed by the hypohalite water solution again in a halogenated way, so that the antibacterial function of the fabric can be regenerated.

Description

technical field [0001] The invention belongs to the research category of fiber fabric modification, in particular to an antibacterial modification method of polyacrylonitrile fiber. Background technique [0002] In daily life, people will inevitably come into contact with various bacteria and viruses, some of which are pathogenic, threatening and harming people's life and health. Fiber textiles are one of the necessities of life, but most textiles do not have antibacterial properties. Entering the 21st century, the outbreak and spread of SARS, bird flu, and hand-foot-mouth disease have seriously threatened people's lives and health; hospitals are places for saving lives, but cross-infection of patients in hospitals is common in real life. Self-cleaning medical supplies, including self-cleaning textiles, are an effective method of controlling nosocomial infections. How to endow fiber fabrics with antibacterial and antiviral functions and prepare fiber fabrics that can kill ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/38D06L3/06D06M101/28D06L4/23
Inventor 王留阳王标兵陶宇
Owner CHANGZHOU UNIV
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