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Nano chitosan base quaternary alkyl ammonium starch ether compound antibacterial paper, preparation and application thereof

A technology of nano-chitosan and quaternary ammonium alkyl, which is applied in the direction of paper, papermaking, textiles and papermaking, can solve the problems of paper strength, safety and environmental protection defects, single inorganic antibacterial materials, microbial resistance, etc., and achieve excellent physical and chemical properties. Performance, improve paper strength, good antibacterial effect

Inactive Publication Date: 2015-11-11
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the antibacterial materials used in antibacterial paper belong to a single inorganic antibacterial material, which has great defects in paper strength, safety and environmental protection, and will cause microbial resistance.

Method used

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  • Nano chitosan base quaternary alkyl ammonium starch ether compound antibacterial paper, preparation and application thereof
  • Nano chitosan base quaternary alkyl ammonium starch ether compound antibacterial paper, preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Dissolve 5g chitosan in 3% acetic acid solution to make 4mg / mL chitosan solution, filter with 0.45μm microporous membrane; filter 4mg / mL sodium tripolyphosphate (TPP) solution with 0.22μm microporous Pore ​​membrane filtration. After mixing 30 mL of the above-mentioned chitosan solution with 15 mL of the TPP solution, adjust the pH to 6 with 2mol / L NaOH solution, then carry out ultrasonic oscillation (output power 70W, ultrasonic oscillation in an ice-water bath for 10 s, cycle 20 times, interval 5 s), and finally obtain Nano chitosan dispersion;

[0027] (2) Beat the bleached wood pulp, then add nano-chitosan dispersion to the slurry (the mass ratio of nano-chitosan to bleached wood pulp is 1:100), stir evenly, and then pass through the paper former Manufactured to obtain nano-chitosan antibacterial paper.

[0028] The size of the antibacterial zone of nano-chitosan antibacterial paper prepared above is shown in Table 1, and the tensile strength, tear strength, a...

Embodiment 2

[0030] A kind of nano chitosan base quaternary ammonium alkyl starch ether composite antibacterial paper, its preparation method is as follows:

[0031] (1) Dissolve 5g chitosan in 2% acetic acid solution to make 4mg / mL chitosan solution, filter with 0.45μm microporous membrane; filter 4mg / mL sodium tripolyphosphate (TPP) solution with 0.22μm microporous Pore ​​membrane filtration. After mixing 30 mL of the above-mentioned chitosan solution with 20 mL of the TPP solution, adjust the pH to 5 with 2mol / L NaOH solution, then carry out ultrasonic oscillation (output power 70W, ultrasonic oscillation in an ice-water bath for 20 s, cycle 15 times, interval 5 s), and finally obtain Nano chitosan dispersion;

[0032] (2) Take 30 mL of quaternary ammonium alkyl starch ether solution with a mass concentration of 4%, then put it in a constant temperature water bath at 95°C, gelatinize for 20 minutes under constant stirring, and finally inject a certain amount of distilled water to adjus...

Embodiment 3

[0036] A kind of nano chitosan base quaternary ammonium alkyl starch ether composite antibacterial paper, its preparation method is as follows:

[0037] (1) Dissolve 5g of chitosan in 2% acetic acid solution to form a 3mg / mL chitosan solution, and filter it with a 0.45μm microporous membrane; Pore ​​membrane filtration. After mixing 40 mL of the above-mentioned chitosan solution with 20 mL of the TPP solution, adjust the pH to 6 with 1mol / L NaOH solution, then carry out ultrasonic oscillation (output power 70W, ultrasonic oscillation in an ice-water bath for 30 s, cycle 10 times, interval 5 s), and finally obtain Nano chitosan dispersion;

[0038] (2) Take 60mL of quaternary ammonium alkyl starch ether solution with a mass concentration of 3%, then put it into a constant temperature water bath at 85°C, gelatinize for 30min under constant stirring, and finally inject a certain amount of distilled water to adjust the mass concentration to 1%. , so as to obtain the quaternary a...

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Abstract

The invention discloses nano chitosan base quaternary alkyl ammonium starch ether compound antibacterial paper, preparation and application thereof. The preparation method comprises the following steps: carrying out acid dissolution on chitosan, and mixing with a TPP solution to obtain nano chitosan; pasting a quaternary alkyl ammonium starch ether solution to obtain a quaternary alkyl ammonium starch ether pasting liquid; adding the nano chitosan into the quaternary alkyl ammonium starch ether pasting liquid to prepare a nano chitosan base quaternary alkyl ammonium starch ether compound papermaking dry strength agent with an antibacterial property, and adding the solution into paper pulp for papermaking. According to the preparation method, the nano chitosan is added into the quaternary alkyl ammonium starch ether pasting liquid, so that the nano chitosan can better give play to the antibacterial property; quaternary alkyl ammonium starch ether is added, so that the physical strength of the bacterial paper is remarkably improved; the nano chitosan base quaternary alkyl ammonium starch ether compound antibacterial paper is good in antibacterial property and excellent in physical property, and can be well applied to various fields like paper for daily use, food wrap paper and medicated paper.

Description

technical field [0001] The invention belongs to the technical field of special paper preparation, and in particular relates to a nano-chitosan-based quaternary ammonium alkyl starch ether composite antibacterial paper and a preparation method and application thereof. Background technique [0002] With the rapid progress of society, people have higher and higher requirements for the quality of life, and the traditional manufacturing industry urgently needs to be improved or transformed to better face such opportunities and challenges. Antibacterial paper refers to paper with antibacterial properties, and it is also a basic substance in people's lives. It is widely used in food packaging and medical fields. At present, most of the antibacterial materials used in antibacterial paper belong to a single inorganic antibacterial material, which has great defects in paper strength, safety and environmental protection, and will cause the problem of drug resistance of microorganisms. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/00D21H21/36D21H21/18D21H17/28D21H17/24
Inventor 杨仁党刘全祖杨飞
Owner SOUTH CHINA UNIV OF TECH
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