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Preparation method of polystyrene/silver/titanium dioxide composite material

A titanium dioxide and polystyrene technology, applied in the field of preparation of polystyrene/silver/titanium dioxide composite materials, can solve the problems of low durability, poor antibacterial stability, etc. long lasting effect

Inactive Publication Date: 2014-12-10
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nano-silver composite materials widely used at present have poor stability and low durability in terms of antibacterial

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Add 1g of polyvinylpyrrolidone and 2ml of distilled water to 70ml of absolute ethanol, stir well at room temperature, and under the protection of nitrogen, add 0.1g of azobisisobutyronitrile and 10ml of styrene into the above solution , at 50°C, reacted for 20 hours, centrifuged to obtain the product, and fully washed with absolute ethanol, and dried to obtain polystyrene microspheres;

[0024] (2) Ultrasonic disperse 1g of polystyrene microspheres into 10ml of concentrated sulfuric acid, react at 20°C for 2 hours, centrifuge to obtain the product, and use absolute ethanol to wash thoroughly, and dry to obtain sulfonated polystyrene Ethylene microspheres;

[0025] (3) Mix 0.2 g of sulfonated polystyrene microspheres with 1 g of sodium citrate, add them to 60 ml of distilled water, mix well at room temperature, add 0.4 g of silver nitrate to the above solution, stir at room temperature for 1 hour, and then After reacting at 50°C for 5 hours, add 3ml of ammonia water...

Embodiment 2

[0027] (1) Add 2g of polyvinylpyrrolidone and 4ml of distilled water to 90ml of absolute ethanol, stir well at room temperature, and under the protection of nitrogen, add 0.2g of azobisisobutyronitrile and 20ml of styrene into the above solution respectively , reacted at 70°C for 22 hours, obtained the product after centrifugation, washed thoroughly with absolute ethanol, and dried to obtain polystyrene microspheres; (2) ultrasonically dispersed 2g polystyrene microspheres into 20ml concentrated In sulfuric acid, at 40°C, react for 4 hours, obtain the product after centrifugation, and use absolute ethanol to fully wash, and obtain sulfonated polystyrene microspheres after drying;

[0028] (3) Mix 0.4g of sulfonated polystyrene microspheres with 2g of sodium citrate, add them to 7ml of distilled water, mix well at room temperature, add 0.5g of silver nitrate to the above solution, and react at 60°C After 6 hours, add 4ml of ammonia water, then add 2ml of tetrabutyl titanate, re...

Embodiment 3

[0030] (1) Add 3g of polyvinylpyrrolidone and 6ml of distilled water to 100ml of absolute ethanol, stir evenly at room temperature, under the protection of nitrogen, add 0.3g of azobisisobutyronitrile and 30ml of styrene into the above solution , at 80°C, reacted for 24 hours, centrifuged to obtain the product, and fully washed with absolute ethanol to obtain polystyrene microspheres;

[0031] (2) Ultrasonic disperse 3g of polystyrene microspheres into 30ml of concentrated sulfuric acid, react at 60°C for 6 hours, centrifuge to obtain the product, and use absolute ethanol to fully wash and dry to obtain sulfonated polystyrene Ethylene microspheres;

[0032] (3) Mix 0.5g of sulfonated polystyrene microspheres with 3g of sodium citrate, add them to 80ml of distilled water, mix well at room temperature, add 0.6g of silver nitrate to the above solution, and then react at 80°C After 7 hours, add 4ml of ammonia water, then add 3ml of tetrabutyl titanate, react at room temperature f...

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Abstract

The invention discloses a preparation method of a polystyrene / silver / titanium dioxide composite material. The preparation method is characterized by comprising the following steps: (1) preparing polystyrene particles; (2) preparing sulfonated polystyrene particles and (3) preparing polystyrene / silver / titanium dioxide composite particles. The preparation method disclosed by the invention has the advantages of simple process and good repeatability and the prepared composite material has the advantages of relatively high catalytic activity and antibacterial property.

Description

technical field [0001] The invention relates to the technical field of application of organic-inorganic composite materials, in particular to a method for preparing polystyrene / silver / titanium dioxide composite materials. Background technique [0002] Organic-inorganic composite materials are brand-new materials made by combining organic materials and inorganic materials in some way. The composite new material has the respective advantages of organic and inorganic materials, and can endow the material with many excellent properties in terms of mechanics, optics, heat, electromagnetics and biology. [0003] As a special form of metallic silver, nano-silver has strong activity and permeability because of its extremely small particles, large specific surface area and many surface active sites. Due to its special physical and chemical properties, it has also been widely used in antibacterial materials, sensor development, electronic circuits, chemical fibers, etc. [0004] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F112/08C08F8/36C08K3/08C08K3/22C08L25/06
Inventor 刘伟良王俊谕周广盖柏冲刘钦泽
Owner QILU UNIV OF TECH
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