Composite film filled with silicon-based nanometer silver-type antibacterial agent, as well as preparation method and application of composite film

A technology of silver-based antibacterial agent and composite film, which is applied in the field of material chemistry to prevent adverse effects, overcome easy oxidation and discoloration, and improve safety and heat resistance

Active Publication Date: 2017-08-18
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved: In order to overcome the defects of the existing technology, obtain a composite film packaging material with antibacterial function, ensure the long-acting and broad-spectrum effects of the effective factors in the packaging film mat

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A composite film filled with a silicon-based nano-silver antibacterial agent, the outer layer of the composite film is a PET layer, and the inner layer is an antibacterial layer; wherein, the antibacterial layer contains a silver-based antibacterial agent supported by mesoporous nano-silica.

[0026] The mesoporous nano-silica of the mesoporous nano-silica has a mesopore diameter of 4.6nm and a specific surface area of ​​672.13m 2 g -1 . The mesoporous nano-silica has an ordered long-range structure, uniform and adjustable mesoporous pore size, high porosity and large specific surface area; its surface is rich in unsaturated groups, and it has good thermal stability and hydrothermal stability sex. The antioxidant carrier prepared by using it as a carrier can achieve the purpose of sustained release; the silver-based antibacterial agent prepared by using it as a carrier has high silver loading, stability and good reusability.

[0027] A preparation method of a composi...

Embodiment 2

[0040] A composite film filled with a silicon-based nano-silver antibacterial agent, the outer layer of the composite film is a PET layer, and the inner layer is an antibacterial layer; wherein, the antibacterial layer contains a silver-based antibacterial agent supported by mesoporous nano-silica.

[0041] The mesoporous nano-silica of the mesoporous nano-silica has a mesopore diameter of 5.1 nm and a specific surface area of ​​772.14 m 2 g -1 . The mesoporous nano-silica has an ordered long-range structure, uniform and adjustable mesoporous pore size, high porosity and large specific surface area; its surface is rich in unsaturated groups, and it has good thermal stability and hydrothermal stability sex. The antioxidant carrier prepared by using it as a carrier can achieve the purpose of sustained release; the silver-based antibacterial agent prepared by using it as a carrier has high silver loading, stability and good reusability.

[0042] A preparation method of a compo...

Embodiment 3

[0055] A composite film filled with a silicon-based nano-silver antibacterial agent, the outer layer of the composite film is a PET layer, and the inner layer is an antibacterial layer; wherein, the antibacterial layer contains a silver-based antibacterial agent supported by mesoporous nano-silica.

[0056] The mesoporous pore diameter of the mesoporous nano-silica described mesoporous nano-silica is 6.4nm, and the specific surface area is 864.31m 2 g -1 . The mesoporous nano-silica has an ordered long-range structure, uniform and adjustable mesoporous pore size, high porosity and large specific surface area; its surface is rich in unsaturated groups, and it has good thermal stability and hydrothermal stability sex. The antioxidant carrier prepared by using it as a carrier can achieve the purpose of sustained release; the silver-based antibacterial agent prepared by using it as a carrier has high silver loading, stability and good reusability.

[0057] A preparation method ...

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Abstract

The invention discloses a composite film filled with a silicon-based nanometer silver-type antibacterial agent, as well as a preparation method and application of the composite film. An outer layer of the composite film is a PET (polyethylene terephthalate) layer, and an inner layer is an antibacterial layer, wherein the antibacterial layer contains a mesoporous nanometer silicon dioxide supported silver-type antibacterial agent. (1) Mesoporous nanometer silicon dioxide with a special morphology is prepared by a sol-gel method to provide a support site for the silver-type antibacterial agent, ensure the long-lasting and broad-spectrum effectiveness of an effective factor, ensure stable release of the effective factor and prevent the negative influence of efficacy outbreak; (2) the shortcomings that the silver-type antibacterial agent is easily oxidized and discolored and silver ions are separated out by water are overcome, the antibacterial efficacy time of the composite film is further prolonged, and the safety and the heat resistance are improved; (3) the outer layer of the composite film is the PET layer, the inner layer is the antibacterial layer, and the outer layer has a mechanical supporting function as well as moisture barrier and oxygen insulation effects, so that the service life of the composite film is prolonged.

Description

technical field [0001] The invention belongs to the field of material chemistry and relates to a medicine and food packaging material, in particular to a composite film filled with a silicon-based nano-silver antibacterial agent and a preparation method and application thereof. Background technique [0002] In recent years, with the continuous improvement of packaging technology and the continuous improvement of people's hygienic requirements for medicine and food, packagers have been constantly innovating and improving the structure and performance of packaging materials to meet people's needs for various functional packaging films. [0003] During the storage and transportation of medical supplies, consumables, and food, due to the influence of microorganisms, radiation, enzymes, oxygen and other factors, adverse changes such as oxidation of medicines and food will occur, resulting in a decrease in the use value of food or medicine, and even product failure. Therefore, fil...

Claims

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Application Information

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IPC IPC(8): A23F3/06
CPCA23F3/06
Inventor 丘晓琳李成詹光颖赵小涵
Owner JIANGNAN UNIV
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