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A kind of halloysite nanotube/quaternary ammonium salt composite antibacterial particle and its preparation method and application

A halloysite nanotube, composite antibacterial technology, applied in the directions of botanical equipment and methods, applications, fungicides, etc., can solve problems such as poor anti-bleeding performance, and achieve increased interlayer spacing, increased lumen volume, and good performance. The effect of antibacterial activity

Active Publication Date: 2019-11-01
INT CENT FOR BAMBOO & RATTAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Quaternary ammonium antibacterial agents have been reported in the field of bamboo and wood processing, but due to their poor anti-loss performance, they are rarely used as the main antibacterial component, and most of them are used as surfactants in composite protective agents for Improve the compatibility between the ingredients of compound medicine
Although there are reports on the method of combining quaternary ammonium salt antibacterial agents with inorganic powder materials, it is not yet possible to use inorganic nanotube materials to load quaternary ammonium salts and apply them to multiple product fields in bamboo wood processing. to report

Method used

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  • A kind of halloysite nanotube/quaternary ammonium salt composite antibacterial particle and its preparation method and application
  • A kind of halloysite nanotube/quaternary ammonium salt composite antibacterial particle and its preparation method and application
  • A kind of halloysite nanotube/quaternary ammonium salt composite antibacterial particle and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Acid etching of halloysite

[0036] Take 5g of halloysite nanotube powder and disperse it in 100mL of 3mol / L hydrochloric acid solution, ultrasonically disperse for 30min, place it at 80°C for 8h under magnetic stirring, wash it with deionized water to be neutral, and dry it in vacuum at 60°C to get Acid etching modified halloysite nanotube powder.

[0037] (2) Activation of acid-etched halloysite nanotubes

[0038] Take 5 g of the acid-etched modified halloysite nanotube powder and disperse it in 100 mL of 70% dimethyl sulfoxide (DMSO) solution, ultrasonically disperse, stir at 80°C for 6 h, and centrifuge with deionized water Washed 3 times, dried under vacuum at 60°C to obtain activated halloysite nanotubes.

[0039] (3) Load of Didecyl Dimethyl Ammonium Chloride (DDAC)

[0040] Dissolve 10 g of didecyl dimethyl ammonium chloride (DDAC) in 100 ml of deionized water, add 2 g of activated halloysite nanotubes, and ultrasonically disperse, place the mixed solutio...

Embodiment 2

[0042] (1) Acid etching of halloysite

[0043] Take 5g of halloysite nanotube powder and disperse it in 100mL of 3mol / L hydrochloric acid solution, ultrasonically disperse for 30min, place it at 80°C for 8h under magnetic stirring, wash it with deionized water to be neutral, and dry it in vacuum at 60°C to obtain Acid etching modified halloysite nanotube powder.

[0044] (2) Activation of acid-etched halloysite nanotubes

[0045] Disperse 5 g of the above-mentioned acid etched modified halloysite nanotube powder in 80 mL of 80% dimethyl sulfoxide (DMSO) solution, ultrasonically disperse, stir at 80 ° C for 6 h, and centrifuge with deionized water Washed 3 times, dried under vacuum at 60°C to obtain activated halloysite nanotubes.

[0046] (3) Loading of dodecyl dimethyl benzyl ammonium chloride (BAC)

[0047] Take 10g of dodecyldimethylbenzyl ammonium chloride (BAC) and dissolve it in 100ml of deionized water, add 2g of activated halloysite nanotubes, disperse by ultrasonic...

Embodiment 3

[0049] (1) Acid etching of halloysite

[0050] Take 5g of halloysite nanotube powder and disperse it in 140mL of 3mol / L hydrochloric acid solution, ultrasonically disperse for 30min, place it under the condition of 60°C for 8h under magnetic stirring, wash it with deionized water to be neutral, and dry it under vacuum at 60°C to obtain Acid etching modified halloysite nanotube powder.

[0051] (2) Activation of acid-etched halloysite nanotubes

[0052] Take 5 g of the acid-etched modified halloysite nanotube powder and disperse it in 70 mL of 90% dimethyl sulfoxide (DMSO) solution, ultrasonically disperse, stir at 80°C for 6 h, and centrifuge with deionized water Washed 3 times, dried under vacuum at 60°C to obtain activated halloysite nanotubes.

[0053] (3) Load of Didecyl Dimethyl Ammonium Chloride (DDAC)

[0054] Dissolve 10 g of didecyl dimethyl ammonium chloride (DDAC) in 100 ml of deionized water, add 2 g of activated halloysite nanotubes, and ultrasonically disperse...

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PUM

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Abstract

The invention relates to halloysite nanotube / quaternary ammonium salt composite antibacterial particles and a preparation method and application thereof. According to the composite antibacterial particles, through acidification and capacity expansion of halloysite, intercalation activation treatment, proper selection of quaternary ammonium salt species and improvement of the loading process, the load of the quaternary ammonium salt in halloysite nanotubes is effectively improved, the anti-loss performance of the quaternary ammonium salt is improved, and the composite antibacterial particles have excellent antimicrobial activity against many kinds of fungi, stain fungi, decaying bacteria and bacteria, and have a wide industrial application range in the field of bamboo wood processing.

Description

technical field [0001] The invention relates to nanocomposite materials, in particular to a halloysite nanocomposite antibacterial particle, a preparation method thereof and an application in the field of bamboo and wood processing. Background technique [0002] Quaternary ammonium salt antibacterial agents have broad-spectrum and high-efficiency antibacterial properties, and many advantages such as wide application range, good water solubility, stable properties, safety, low toxicity, and low price, making them one of the most widely used antibacterial agents. But quaternary ammonium antibacterial agents are due to their water-soluble characteristics, which cause antibacterial performance to decline through water-soluble loss during use, so it is necessary to modify quaternary ammonium salts. [0003] Halloysite is a natural inorganic aluminosilicate mineral with a wide range of sources, huge reserves, low price, and is suitable for industrial applications. Compared with o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N33/12A01N25/08A01P3/00A01P1/00
CPCA01N25/08A01N33/12
Inventor 张融越显峰靳肖贝李志强覃道春费本华江泽慧
Owner INT CENT FOR BAMBOO & RATTAN
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