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Preparation method of quaternized halamine antibacterial cotton fiber

A halide-amine antibacterial cotton and halide-amine technology are applied in fiber treatment, plant fiber, textiles and papermaking, etc., which can solve the problems of long reaction time and achieve the effects of cheap raw materials, easy availability of raw materials, and avoiding synthesis

Inactive Publication Date: 2013-09-04
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the antibacterial cotton fiber materials prepared by the above patent methods have a relatively strong ability to kill harmful microorganisms, they need to first synthesize quaternary ammonium silanes or haloamine precursor silanes in their preparation process. The synthesis of these silanes requires Carried out in an organic solvent such as dimethylformamide and a higher temperature, and the reaction time is longer, after the reaction is completed, the solvent should be removed by vacuum distillation, etc.

Method used

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  • Preparation method of quaternized halamine antibacterial cotton fiber
  • Preparation method of quaternized halamine antibacterial cotton fiber
  • Preparation method of quaternized halamine antibacterial cotton fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Synthesis of N,N-Dimethylchloroethylamine Hydrochloride

[0033] 12.83g (0.106mol) of 99% thionyl chloride (SOCl 2) into a 250mL round-bottomed flask, and kept stirring, then weighed 8.91g (0.10mol) N,N-dimethylethanolamine, and added N,N-dimethylethanolamine dropwise under ice-bath conditions Add to the above-mentioned 250mL round bottom flask filled with thionyl chloride. After the dropwise addition, transfer the 250mL round bottom flask to a water bath at 35-50°C for 1 hour reaction, then add 100mL ethanol solution, and raise the temperature until the solution boils. After the reaction, the solution was cooled to crystallize, and then the solution was discarded, and the obtained crystal was vacuum-dried in a vacuum oven at 45° C. for 2 hours. Calculated by weighing, the productive rate is 83%.

Embodiment 2

[0035] Synthesis of 3-Dimethylaminoethyl-5,5-Dimethylhydantoin (DEADH)

[0036] Pour 6.4g (0.05mol) of 5,5-dimethylhydantoin and 8.64g (0.06mol) of N,N-dimethylchloroethylamine hydrochloride into a 500mL circle containing 100mL of 99.5% ethanol solution Add equimolar sodium ethoxide to the bottom flask respectively, then react the above two flasks under ice-bath conditions for 30min, then mix them, and stir them magnetically for 12h at 60°C. The reaction equation is shown below. After the reaction stopped, the by-product NaCl was removed by filtration, and the solvent ethanol was distilled off under reduced pressure. Then the obtained pale yellow solid was put into a vacuum oven and dried under vacuum for 4 h. According to the literature, TBPE is used as the indicator, TPB is used as the titrant, and the end point of the titration is when the titrated solution changes from red to yellow-green. Determination of its yield is 83.24%. The crude product of DEADH was separated a...

Embodiment 3

[0038] 3-Chloropropyltrimethoxysilane grafted on cotton fibers

[0039] Prepare an aqueous solution of 3-chloropropyltrimethoxysilane with a mass fraction of 6%, and stir at room temperature for 30 minutes to make 3-chloropropyltrimethoxysilane and deionized water completely miscible. Then soak 10 grams of cotton cloth fibers in the above solution for 15 minutes, and then place the cotton cloth in a 90° C. electric constant temperature blast drying oven to dry for 1 hour. Take it out and wash it with tap water and dry it for later use. The content of 3-chloropropyltrimethoxysilane bonded to the cotton fiber is determined by measuring the chlorine in organic chlorine, that is, the chlorine in C-Cl, by the oxygen bottle combustion method. Organochlorine content: 1.24%.

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Abstract

The invention discloses a preparation method of a quaternized halamine antibacterial cotton fiber. The preparation method disclosed by the invention comprises the following steps of: taking common cotton cloth as a carrier, grafting hydrolyzed alkylsilane on cotton cloth, then carrying out quaternization between a tertiary amine functional group and an alkylhalide group on the cotton cloth to graft a halamine precursor containing the tertiary amine functional group to the cotton cloth to form the cotton cloth carrying a quaternized halamine precursor; and finally, carrying out halogenation reaction to obtain quaternized halamine antibacterial cotton cloth. The process disclosed by the invention avoids synthesizing quaternized halamine precursor silane before grafting, and the synthesis consumes time and energy and needs to use an organic solvent.

Description

technical field [0001] The invention relates to the technical field of material preparation, in particular to a preparation method of quaternized ammonium haloamine antibacterial cotton fiber. Background technique [0002] With the rapid development of science and technology and the continuous improvement of people's living standards, people have put forward higher requirements for the hygienic function of textiles. Considering that in the process of people wearing various textiles, various secretions such as sweat and sebum in people's bodies will adhere to the textiles, and provide a good living environment for various harmful microorganisms in a suitable environment for their growth. and reproduction, thereby endangering people's living environment and health. Therefore, the research and development of textiles with antibacterial properties is of great significance to people's life and health. [0003] Among them, among many antibacterial agents, N-halamine antibacteria...

Claims

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Application Information

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IPC IPC(8): D06M13/513D06M11/09D06M11/30D06M101/06
Inventor 梁杰张冰焦玉超亢真真
Owner SHANGHAI NORMAL UNIVERSITY
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