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Chitosan-loaded nano-silver antibacterial polypropylene material and preparation method thereof

A technology of nano-silver antibacterial and polypropylene material is applied in the field of chitosan-loaded nano-silver antibacterial polypropylene material and its preparation, which can solve the problems of limited application scope, low antibacterial activity, discoloration of products, etc., and achieves improved mechanical properties, antibacterial Long-lasting, good compatibility

Inactive Publication Date: 2019-10-18
QUANZHOU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, inorganic antibacterial agents have good heat resistance, excellent antibacterial broad-spectrum and durability, but they are easy to precipitate in the product and cause the product to change color; while natural antibacterial agents are non-toxic and non-irritating to the human body, and are safe to use High antibacterial properties, but chitosan natural antibacterial agents have low antibacterial activity, and cannot be directly dissolved in water and common organic solvents, so their application range is greatly limited

Method used

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  • Chitosan-loaded nano-silver antibacterial polypropylene material and preparation method thereof
  • Chitosan-loaded nano-silver antibacterial polypropylene material and preparation method thereof
  • Chitosan-loaded nano-silver antibacterial polypropylene material and preparation method thereof

Examples

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Embodiment 1

[0033] A chitosan-loaded nano-silver antibacterial polypropylene material, the composition of raw materials includes polypropylene resin and self-made load-type antibacterial agent, wherein the polypropylene resin is 100 parts by weight, and the load-type antibacterial agent is 8 parts; the load-type The antibacterial agent is a chitosan / nano-silver composite antibacterial agent, wherein the nano-silver is loaded on the chitosan, and the mass ratio of the nano-silver to the chitosan is 5 / 100.

[0034] The preparation method of described chitosan / nano-silver composite antibacterial agent is:

[0035] (1) 50ml of ultrapure water was stirred and heated to 90°C, and then 0.1g of chitosan was added to prepare a suspension of chitosan;

[0036] (2) 0.5ml of AgNO with a concentration of 0.1mol / L 3 Solution joins in the chitosan suspension described in step (1);

[0037] (3) Add 0.5 mg of glucose to the mixed solution described in step (2), continue to stir for 10 minutes, cool to r...

Embodiment 2

[0040] Except that the reducing agent in the preparation chitosan / nano-silver composite antibacterial agent step (3) is adjusted to 0.5ml ethylene glycol solution, other processing steps are the same as in Example 1.

Embodiment 3

[0042] A chitosan-loaded nano-silver antibacterial polypropylene material, the composition of raw materials includes polypropylene resin and self-made load-type antibacterial agent, wherein the polypropylene resin is 100 parts by weight, and the load-type antibacterial agent is 8 parts; the load-type The antibacterial agent is a chitosan / nano-silver composite antibacterial agent, wherein the nano-silver is loaded on the chitosan, and the mass ratio of the nano-silver to the chitosan is 20 / 100.

[0043] The preparation method of described chitosan / nano-silver composite antibacterial agent is:

[0044](1) 50ml of ultrapure water was stirred and heated to 90°C, and then 0.1g of chitosan was added to prepare a suspension of chitosan;

[0045] (2) 2ml of AgNO with a concentration of 0.1mol / L 3 Solution joins in the chitosan suspension described in step (1);

[0046] (3) Add 0.5 mg of glucose to the mixed solution described in step (2), continue to stir for 10 minutes, cool to roo...

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Abstract

The invention discloses a chitosan-loaded nano-silver antibacterial polypropylene material and a preparation method thereof and belongs to the field of polymer material modification. The antibacterialpolypropylene material comprises polypropylene resin and a loaded antibacterial agent, wherein measured according to the weight part (100) of the polypropylene resin, the weight part of the loaded antibacterial agent is 0.1-30; the loaded antibacterial agent is a chitosan / nano-silver composite antibacterial agent, wherein nano-silver is loaded on chitosan, and the mass ratio of the nano-silver tothe chitosan is 1 / 100-100 / 100. The composite antibacterial agent disclosed by the invention has the advantages such as small dosage, greenness, environment friendliness, low price and durable antibacterial properties, and therefore, the prepared antibacterial polypropylene material is not only excellent in antibacterial properties, but also improved on mechanical properties. In addition, the preparation process of the antibacterial polypropylene material is simple and easy to operate, and the antibacterial polypropylene material is suitable for industrial application and has very high economic and social values.

Description

technical field [0001] The invention belongs to the field of polymer material modification, and furthermore, relates to a chitosan-loaded nano-silver antibacterial polypropylene material and a preparation method thereof. The antibacterial polypropylene can be applied to various fields of production and life. Background technique [0002] With the development of the economy and the improvement of living standards, people's demand for antibacterial materials has extended to various fields and has become an indispensable part of production and life. As one of the five general-purpose plastics, polypropylene is widely used in many fields such as daily necessities, medical machinery, home appliances, building materials and packaging because of its excellent mechanical properties and processing properties. Therefore, the development of antibacterial polypropylene materials has always been a hot spot in the field of antibacterial. [0003] Antibacterial agents are the core of anti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/10C08L5/08C08K9/12C08K3/08
CPCC08L23/10C08K2003/0806C08K2201/011C08L5/08C08K9/12C08K3/08
Inventor 许静陈继锡罗水源
Owner QUANZHOU NORMAL UNIV
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