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Antibacterial and mildew-proof super-hydrophobic oil-water separation paper with high separation flux and preparation method thereof

An antibacterial, antifungal, and flux technology, applied in textiles and papermaking, separation of immiscible liquids, addition of non-polymeric organic compounds, etc. Performance, simple preparation method, good effect of mildew resistance

Active Publication Date: 2021-11-09
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has many process steps and requires multiple modifications, and the superhydrophobic paper produced is often very dense and cannot be applied to oil-water separation.

Method used

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  • Antibacterial and mildew-proof super-hydrophobic oil-water separation paper with high separation flux and preparation method thereof
  • Antibacterial and mildew-proof super-hydrophobic oil-water separation paper with high separation flux and preparation method thereof
  • Antibacterial and mildew-proof super-hydrophobic oil-water separation paper with high separation flux and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1) Soak the cellulose fiber paddle and chitosan fiber with deionized water, then perform mechanical beating to obtain cellulose pulp and chitosan fiber with a beating degree of 30°SR and a concentration of 10wt% respectively;

[0043] 2) Dilute the cellulose slurry and chitosan fiber to a concentration of 1wt%; mix the cellulose slurry and chitosan slurry in a mass ratio of 1:2, and stir evenly; take 180g of the mixed slurry, add 0.75 g tannic acid, 0.75mL 3-aminopropyltriethoxysilane, 0.6mL octadecyltriethoxysilane, 20mL ethanol, stir well, and react at room temperature for 12h;

[0044] 3) Using a Kaiser method sheet machine, the fully reacted slurry was sheeted into a circular paper sheet, and dried in a paper dryer at a temperature of 60°C for 1 hour to obtain a superhydrophobic paper.

[0045] The quality of gained superhydrophobic paper is 2.6g, and area is 196.3cm 2 , a thickness of 165 μm, a water contact angle of 155°, and a water rolling angle of 8°. Applyin...

Embodiment 2

[0054] 1) Soak the cellulose fiber paddle and chitosan fiber with deionized water, then perform mechanical beating to obtain a beating degree of 45 ° SR, a concentration of cellulose pulp and chitosan fiber of 10 wt %;

[0055] 2) Dilute the cellulose slurry and chitosan fiber to a concentration of 1 wt%. Mix the cellulose slurry and the chitosan slurry according to the mass ratio of 1:1.5, and stir evenly; take 190g of the mixed slurry, add 0.55g of tannic acid, 0.55mL of 3-aminopropyltrimethoxysilane, 0.65 mL hexadecyltriethoxysilane, 20mL ethanol, stir well, react at room temperature for 16h;

[0056] 3) Using a Kaiser method sheet machine, the fully reacted slurry was sheeted into a circular paper sheet, and dried in a paper dryer at a temperature of 70°C for 1.5 hours to obtain a superhydrophobic paper.

[0057] The quality of gained superhydrophobic paper is 2.5g, and area is 186.7cm 2 , a thickness of 176 μm, a water contact angle of 153°, and a water rolling angle of...

Embodiment 3

[0059] 1) Soak the cellulose fiber paddle and chitosan fiber with deionized water, then perform mechanical beating to obtain a beating degree of 50 ° SR, and a concentration of 10 wt% cellulose pulp and chitosan fiber;

[0060] 2) Dilute the cellulose slurry and chitosan fiber to a concentration of 1wt%; mix the cellulose slurry and chitosan slurry in a ratio of 1:1 according to the mass ratio, and stir evenly; get 180g of the mixed slurry, add 0.8g tannic acid, 0.8mL 3-aminopropyltriethoxysilane, 0.7mL octadecyltrimethoxysilane, 20mL ethanol, stir well, and react at room temperature for 14h;

[0061] 3) Using a Kaiser method sheet machine, the fully reacted slurry was sheeted into a circular paper sheet, and dried in a paper dryer at a temperature of 65°C for 1 hour to obtain a superhydrophobic paper.

[0062] The quality of the obtained superhydrophobic paper is 2.7g, and the area is 210.7cm 2 , a thickness of 173 μm, a water contact angle of 155°, and a water rolling angle...

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Abstract

The invention belongs to the technical field of preparation of super-hydrophobic paper, and discloses antibacterial and mildew-proof super-hydrophobic oil-water separation paper with high separation flux and a preparation method of the super-hydrophobic oil-water separation paper. The method comprises the following steps: 1) mixing cellulose fiber slurry, chitosan fiber slurry, tannic acid, a silane coupling agent, long-carbon-chain silane and an alcohol solvent, and conducting reacting to obtain composite slurry; and 2) making the composite pulp into paper, and conducting drying to obtain the super-hydrophobic oil-water separation paper. The method is simple, reaction conditions are mild, and raw materials are green and environment-friendly. The contact angle between the prepared super-hydrophobic oil-water separation paper and water is larger than 150 degrees, the rolling angle is smaller than 10 degrees, the maximum oil-water separation flux can reach 23692 L*m<-2>h<-1>, the separation efficiency is larger than 99%, and the super-hydrophobic oil-water separation paper has the good friction resistance characteristic and can be repeatedly used; and the prepared super-hydrophobic oil-water separation paper has excellent antibacterial and mildew-proof properties.

Description

technical field [0001] The invention belongs to the technical field of super-hydrophobic paper preparation, and in particular relates to a super-hydrophobic oil-water separation paper with high separation flux, antibacterial and mildew resistance and a preparation method thereof. Background technique [0002] According to investigations and studies, about 3.2 billion cubic tons of oil enters water bodies every year around the world to form oily wastewater, causing serious pollution to the environment. The core issue of oily wastewater treatment and resource utilization is the effective separation and recovery of oil in water. In view of the complexity of the oil-water system, it is required that the materials used for oil-water separation should have the characteristics of fast processing speed, economy and convenient operation. [0003] Among many oil-water separation materials, superhydrophobic paper is widely used because of its strong operability, light weight, large pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/00D21H13/30D21H17/04D21H17/14D21F13/04B01D17/02
CPCD21H11/00D21H13/30D21H17/14D21H17/04D21F13/04B01D17/02
Inventor 王小慧凌浩
Owner SOUTH CHINA UNIV OF TECH
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