Antibacterial antioxidant composite film, and preparation method and application thereof

A technology of oxygen composite and composite membrane, applied in the field of material chemistry, to achieve the effect of prolonging the service life, overcoming oxidation and discoloration, and prolonging the antibacterial effect period

Active Publication Date: 2017-08-22
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 and anti-oxidation functions, ensure the long-term and broad-spectrum effectiveness of the effective factors in the pack

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] An antibacterial and anti-oxidation composite film, the composite film is composed of a PET layer, an anti-bacterial layer and an anti-oxidation layer from the outside to the inside; wherein, the anti-bacterial layer contains a silver-based anti-bacterial agent supported by mesoporous nano-silica, and the anti-oxidation layer contains a silver-based anti-bacterial agent. Contains antioxidant supported by mesoporous nano silica.

[0028] The mesoporous pore diameter of the mesoporous nano silica is 4.6nm, and the specific surface area is 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 usi...

Embodiment 2

[0046] An antibacterial and anti-oxidation composite film, the composite film is composed of a PET layer, an anti-bacterial layer and an anti-oxidation layer from the outside to the inside; wherein, the anti-bacterial layer contains a silver-based anti-bacterial agent supported by mesoporous nano-silica, and the anti-oxidation layer contains a silver-based anti-bacterial agent. Contains antioxidant supported by mesoporous nano silica.

[0047] The mesoporous pore diameter of the mesoporous nano silica is 5.1nm, and the specific surface area is 772.14m 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 usi...

Embodiment 3

[0065] An antibacterial and anti-oxidation composite film, the composite film is composed of a PET layer, an anti-bacterial layer and an anti-oxidation layer from the outside to the inside; wherein, the anti-bacterial layer contains a silver-based anti-bacterial agent supported by mesoporous nano-silica, and the anti-oxidation layer contains a silver-based anti-bacterial agent. Contains antioxidant supported by mesoporous nano silica.

[0066] The mesoporous pore diameter of the 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 usi...

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Abstract

The invention discloses an antibacterial antioxidant composite film, and a preparation method and application thereof. The composite film successively comprises, from exterior to interior, a PET layer, an antibacterial layer and an antioxidant layer, wherein the antibacterial layer contains a mesoporous nanometer silica supported silver-series antibacterial agent, and the antioxidant layer contains a mesoporous nanometer silica supported anti-oxidant. The invention has the following beneficial effects: (1) mesoporous nanometer silica with special morphology is prepared by using a sol-gel process and is used as a site for providing support to the silver-series antibacterial agent and the anti-oxidant, so long-acting and wide-spectrum efficacy of effective factors are guaranteed, stable release of the effective factors is guaranteed, and unfavorable influence caused by burst of drug effect is prevented; (2) the composite film provided by the invention overcomes the shortcomings that the silver-series antibacterial agent is prone to oxidation stain and that silver ions are separated out when the silver-series antibacterial agent encounters water, so the effective antibacterial period of the composite film is prolonged, and the security and hear resistance of the composite film are enhanced; and (3) since the composite film successively comprises, from exterior to interior, the PET layer, the antibacterial layer and the antioxidant layer, 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 an antibacterial and anti-oxidation composite film and its preparation method and application. 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, films with multifunctional properti...

Claims

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Application Information

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IPC IPC(8): B32B27/06B32B9/00C08L23/12C08K9/12C08K3/28
CPCB29B9/06B29C48/18B29C48/92B29C2948/92704B32B9/00B32B27/06B32B2307/714B32B2307/7145B32B2439/80C08K3/28C08K9/12C08L23/12
Inventor 丘晓琳李成黄雨佳乔芮曲星茹
Owner JIANGNAN UNIV
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