A nano-cellulose immobilized lactic acid/chitosan drug-loaded nano-microsphere multifunctional papermaking coating and its preparation method

A nano-cellulose, drug-loaded nano-technology, applied in paper coating, fiber raw material processing, papermaking, etc.

Inactive Publication Date: 2017-03-29
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the existing shortcomings of household paper, to provide a nano-cellulose immobilized lactic acid / chitosan drug-loaded nano-microsphere multifunctional papermaking coating and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0018] (1) Dissolve 3g chitosan powder in 100mL lactic acid aqueous solution with a volume concentration of 3%, heat to 40°C to completely dissolve chitosan, add 5mL chlorhexidine solution with a mass concentration of 6%, mix well, and then Prepare chitosan-chlorhexidine nano-microsphere solution after dripping 20mL 10g / L polyaspartic acid solution reaction; The mass volume ratio of described chitosan and lactic acid is 1g: 1ml; Chitosan and chlorhexidine The fixed mass ratio is 10:1;

[0019] (2) Add 30 g of nanocellulose with a mass concentration of 1% to the chitosan-chlorhexidine nanosphere solution obtained in step (1), place it in a shaker at room temperature for 10 minutes, and centrifuge at 4000 r / min to obtain Nanocellulose immobilized lactic acid\chitosan drug-loaded complex. The mass ratio of chitosan to nanocellulose is 1:0.1;

[0020] (3) The nanocellulose-immobilized lactic acid / chitosan drug-loaded complex obtained in step (2) was coated on the surface of tiss...

Embodiment 2

[0022] (1) Dissolve 3g of chitosan powder in 100mL of lactic acid aqueous solution with a volume concentration of 6%, heat to 50°C to completely dissolve chitosan, and add 5mL of chlorhexidine solution with a mass concentration of 12% to mix evenly, then Prepare chitosan-chlorhexidine nano-microsphere solution after dripping 25mL 15g / L polyaspartic acid solution reaction; The mass volume ratio of described chitosan and lactic acid is 1g: 2ml; Chitosan and chlorhexidine The fixed mass ratio is 10:2;

[0023] (2) Add 30 g of nanocellulose with a mass concentration of 2% to the chitosan-chlorhexidine nanosphere solution obtained in step (1), place it in a shaker at room temperature for 20 minutes, and centrifuge at 4000 r / min to obtain Nanocellulose immobilized lactic acid\chitosan drug-loaded complex. The mass ratio of chitosan to nanocellulose is 1:0.2;

[0024] (3) The nanocellulose-immobilized lactic acid / chitosan drug-loaded complex obtained in step (2) was coated on the s...

Embodiment 3

[0026] (1) Dissolve 3g of chitosan powder in 100mL of lactic acid aqueous solution with a volume concentration of 9%, heat to 60°C to completely dissolve chitosan, and add 5mL of chlorhexidine solution with a mass concentration of 18% to mix evenly, then Prepare chitosan-chlorhexidine nano-microsphere solution after dripping 30mL 20g / L polyaspartic acid solution reaction; The mass volume ratio of described chitosan and lactic acid is 1g: 3ml; Chitosan and chlorhexidine The fixed mass ratio is 10:3;

[0027] (2) Add 30 g of nanocellulose with a mass concentration of 3% to the chitosan-chlorhexidine nanosphere solution obtained in step (1), place it in a shaker at room temperature for 30 minutes, and centrifuge at 4000 r / min to obtain Nanocellulose immobilized lactic acid\chitosan drug-loaded complex. The mass ratio of chitosan to nanocellulose is 1:0.3;

[0028] (3) The nanocellulose-immobilized lactic acid / chitosan drug-loaded complex obtained in step (2) was coated on the s...

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Abstract

The invention discloses multifunctional nanocellulose supported lactic acid/chitosan drug-loaded nano microsphere paper-making paint and a preparing method thereof. The preparing method includes the steps that chitosan powder is dissolved into a lactic acid aqueous solution to be completely dissolved, a chlorhexidine solution is added and evenly mixed, then a polyaspartic acid solution is added dropwise, chitosan-chlorhexidine nano microspheres are prepared through reacting, the obtained nano microspheres are added into nanocellulose with the mass concentration of 1-5%, and the mixture of the nano microspheres and the nanocellulose is placed into a shaking table and reacts to prepare the nanocellulose supported lactic acid-chitosan drug-loaded compound paint. The surface of household paper is coated with the nanocellulose supported lactic acid/chitosan drug-loaded compound, so that the household paper has high strength, high antibacterial property and high softness at the same time, the defects of low strength, low softness and absence of antibacterial property of common household paper are improved, and the paper-making paint has high application value.

Description

technical field [0001] The invention relates to a multifunctional coating for household paper, in particular to a multifunctional coating with high strength, high antibacterial property and high flexibility for household paper and a preparation method thereof. Background technique [0002] Paper products are indispensable products in people's production and life. The fibers in paper can absorb many microorganisms, and these microorganisms will multiply rapidly if the temperature is appropriate, and then cause various hazards to the human body. Especially household paper, which is the most commonly used in people's daily life, is likely to bring the chance of bacterial transmission or cross-infection. At present, the main household papers generally have the disadvantages of low strength, poor softness and no antibacterial properties. Therefore, in order to prevent the spread of harmful bacteria and various infectious diseases caused by cross-infection during the use of paper...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H21/28D21H19/12D21H19/34
Inventor 刘凯魏璐黄六莲陈礼辉
Owner FUJIAN AGRI & FORESTRY UNIV
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