Cellulose/sliver/silver chloride composite material and preparation method thereof

A technology of composite materials and cellulose, which is applied in the field of cellulose-based hybrid materials and its preparation, can solve the problems of cellulose/silver/silver chloride composite materials such as less reports, and achieve narrow particle size distribution range and particle size Uniform, good dispersion effect

Inactive Publication Date: 2013-06-05
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] At present, there are many reports on cellulose / silver hybrid materials and silver / silver chloride hybrid materials, but there are few reports on cellulose / silver / silver chloride composite materials.

Method used

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  • Cellulose/sliver/silver chloride composite material and preparation method thereof
  • Cellulose/sliver/silver chloride composite material and preparation method thereof
  • Cellulose/sliver/silver chloride composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0075] 1. Preparation of cellulose solution

[0076] 1A) Add 7g of sodium hydroxide and 12g of urea into 81g of water, stir and dissolve evenly to obtain a sodium hydroxide / urea aqueous solution, wherein the mass percentage of sodium hydroxide is 7%, and the mass percentage of urea is 12%; The mass ratio of sodium hydroxide to urea is 7:12;

[0077] 1B) Add 3.24g of microcrystalline cellulose into the above sodium hydroxide / urea aqueous solution and stir to prepare a uniformly dispersed cellulose solution, wherein the mass percent concentration of cellulose in the cellulose solution is 3.24%.

[0078] In the present invention, the mass ratio of sodium hydroxide and urea in the sodium hydroxide / urea aqueous solution is except 7:12, and the mass ratio of other sodium hydroxide and urea is 5-15:5-20, which is applicable to the present invention .

[0079] 2. Preparation of cellulose / silver / silver chloride composites

[0080] 2A) Preparation of suspension

[0081] 10mL cellulo...

Embodiment 2

[0091] In addition to adding 10mL of cellulose solution, 0.287g of silver citrate, and 0.0985g of sodium chloride into 30mL of water during the preparation of the cellulose / silver / silver chloride composite material, the molar ratio of silver ions to chloride ions is 1:1 The amount of cellulose solution added per millimole of silver ions is 5.88mL; during ultrasonic treatment, the temperature is 90±2°C; the frequency of ultrasonic treatment is 24kHz; the pulse time of ultrasonic is 1S:1S, that is, the duration of ultrasonic wave is 1S (on), ultrasonic stop generation time (ie intermittent time) 1S (off), ultrasonic treatment time is 20min, the rest is the same as in Example 1.

[0092] The morphology of the prepared cellulose / silver / silver chloride composite was examined by scanning electron microscopy. Figure 4 Scanning electron micrographs of the cellulose / silver / silver chloride composite material prepared for this example. Scanning electron micrographs show that the silver...

Embodiment 3

[0094] In addition to adding 10.0g of sodium hydroxide and 15g of urea to 75g of water during the preparation of the cellulose solution to form a sodium hydroxide / urea solution, wherein the mass percent content of sodium hydroxide is 10%, and the mass percent concentration of urea is 15%; The mass ratio of sodium hydroxide to urea is 10:15; 2.0g of cellulose is dissolved in sodium hydroxide / urea solution to make a cellulose solution with a concentration of 2.0% by mass;

[0095] During ultrasonic treatment, the temperature is 90±2°C; the frequency of ultrasonic treatment is 20kHz; the pulse time of ultrasonic is 5S:5S, that is, the continuous time of ultrasonic wave is 5S (on), and the time of ultrasonic stop (ie intermittent time) is 5S ( off), the ultrasonic treatment time is 40min; the absolute pressure of vacuum drying is 0.01MPa, the vacuum drying temperature is 40°C, and the moisture content of the prepared cellulose / silver / silver chloride composite material is 3%, the re...

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Abstract

The invention provides a cellulose/silver chloride composite material and a preparation method thereof. The cellulose/silver chloride composite material is quickly prepared by adopting microcrystalline cellulose, sliver salt and chlorine compound as the materials, adopting water as solvent and adopting an ultrasonic-wave treatment method. The cellulose/silver chloride composite material prepared by the preparation method disclosed by the invention is uniform in silver/ silver chloride nanometer particle, capable of being uniformly distributed on a cellulose substrate and is extensive in application prospect in the antibacterial filed and the photocatalysis filed. Moreover, according to the preparation method disclosed by the invention, the materials are cheap, the process is simple, the operation is convenient, the preparation is quick and the process conditions are easy to control, so that the production process is greatly simplified, the time is saved and the cost is reduced. Meanwhile, the preparation method is free of any expensive and complex equipment and is beneficial to the industrial popularization.

Description

technical field [0001] The invention relates to a cellulose-based hybrid material and a preparation method thereof, in particular to a silver / silver chloride cellulose-based hybrid material and a preparation method thereof. Background technique [0002] Hybrid materials are composite materials in which two phases or more than two phases are homogeneously combined. The polymer-based nanocomposites are collectively referred to as polymer-based nanocomposites that use polymers as the matrix phase and metals, inorganic substances, and polymers as the reinforcing phase. Polymer-based nanocomposites have properties that exceed those of general composites, including tensile strength, elastic modulus, heat distortion temperature, and gas permeability. Among them, polymer-based inorganic hybrid materials combine the rigidity, dimensional stability, and thermal stability of inorganic substances with the toughness, processability, and dielectric properties of polymers, resulting in ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/28C08L1/02C08K3/08C08K3/16C01G5/02B22F9/24
Inventor 马明国董闫闫孙少龙付连花许凤孙润仓
Owner BEIJING FORESTRY UNIVERSITY
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