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Protective facial mask containing nano silver and chitosan and production method of protective facial mask

A technology of chitosan and nano-silver is applied in the field of preparation of sanitary products, which can solve problems such as single function, and achieve the effects of comfortable wearing, simple preparation method and good air permeability.

Active Publication Date: 2013-09-11
INST OF BASIC MEDICAL SCI ACAD OF MILITARY MEDICAL SCI OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary masks only have general filtering functions, and the functions are relatively single

Method used

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  • Protective facial mask containing nano silver and chitosan and production method of protective facial mask
  • Protective facial mask containing nano silver and chitosan and production method of protective facial mask

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Weigh 0.5 g of chitosan and dissolve it in 50 ml of 1% acetic acid solution to prepare a chitosan solution with a mass concentration of 1%.

[0025] (2) Weigh 0.085g silver nitrate (AgNO 3 ) was dissolved in 50ml chitosan solution, and after fully stirring, AgNO with a concentration of 0.01M was formed 3 - Chitosan solution, let stand for 6-12 hours.

[0026] (3) Soak double-layer absorbent cotton gauze in AgNO 3 - in the chitosan mixed solution, pre-freeze at -20° C. after 4 hours, and freeze-dry to prepare a double-layer degreasing cotton gauze containing nano-silver and chitosan.

[0027] (4) Soak the double-layer degreasing cotton gauze containing nano-silver and chitosan in 2.5% glutaraldehyde solution, freeze-dry after 0.5 hour.

[0028] (5) Take out the degreasing cotton gauze treated in step (4), soak it in a sodium borohydride solution with a mass concentration of 3% for 6 hours, remove residual glutaraldehyde small molecules, and simultaneously add AgNO...

Embodiment 2

[0031] (1) Take 1 g of chitosan and dissolve it in 50 ml of 1% acetic acid solution to prepare a chitosan solution with a mass concentration of 2%.

[0032] (2) Weigh 3.4g silver nitrate (AgNO 3 ) was dissolved in 50ml chitosan solution, and after fully stirring, AgNO with a concentration of 0.4M was formed 3 - Chitosan solution, let stand for 6-12 hours.

[0033] (3) Soak double-layer absorbent cotton gauze in AgNO 3 - in the chitosan mixed solution, pre-freeze at -25°C after 8 hours, and freeze-dry to prepare a double-layer degreasing cotton gauze containing nano-silver and chitosan.

[0034] (4) Soak the double-layer degreasing cotton gauze containing nano-silver and chitosan in 2.5% glutaraldehyde solution, freeze-dry after 1 hour.

[0035] (5) Take out the degreasing cotton gauze treated in step (4), soak it in a sodium borohydride solution with a mass concentration of 3% for 7 hours, remove residual glutaraldehyde small molecules, and simultaneously add AgNO 3 Reduct...

Embodiment 3

[0038] (1) Weigh 1.5 g of chitosan and dissolve it in 50 ml of 1% acetic acid solution to prepare a chitosan solution with a mass concentration of 3%.

[0039] (2) Weigh 0.85g silver nitrate (AgNO 3 ) was dissolved in 50ml chitosan solution, and after fully stirring, AgNO with a concentration of 0.1M was formed 3 - Chitosan solution, let stand for 6-12 hours.

[0040] (3) Soak double-layer absorbent cotton gauze in AgNO 3 - in the chitosan mixed solution, pre-freeze at -30° C. after 12 hours, and freeze-dry to prepare a double-layer degreasing cotton gauze containing nano-silver and chitosan.

[0041] (4) Soak the double-layer degreasing cotton gauze containing nano-silver and chitosan in 2.5% glutaraldehyde solution, and freeze-dry after 2 hours.

[0042] (5) Take out the degreasing cotton gauze treated in step (4), soak it in a sodium borohydride solution with a mass concentration of 3% for 8 hours, remove residual glutaraldehyde small molecules, and simultaneously add Ag...

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Abstract

The invention discloses a protective facial mask containing nano silver and chitosan and a production method of the protective facial mask. The protective facial mask provided by the invention is composed of five gauze layers, wherein two of the five gauze layers are functional absorbent cotton gauzes containing the nano silver and the chitosan. The protective facial mask has the functions of antibiosis, eliminating unusual smell and absorbing dust, and can effectively prevent pathogenic bacteria or virus from invading into a human body through the oral cavity and the nasal cavity so as to prevent communicable diseases; and the protective facial mask is excellent in air permeability. The production method of the protective facial mask is simple, wide in material source and suitable for industrialized production.

Description

technical field [0001] The invention belongs to the technical field of hygiene product preparation, and in particular relates to a protective mask containing nano-silver and chitosan and a preparation method thereof. Background technique [0002] Masks are daily necessities in people's lives, which can prevent bacteria and dust from invading the human body. Ordinary masks only have general filtering functions, and the functions are relatively single. At the same time, respiration makes the mask body moist during use, which is conducive to the growth of bacteria and microorganisms. [0003] Nano-silver is a non-toxic, environment-friendly material with good antibacterial properties, and is widely used in various antibacterial materials. Chitosan is the only cationic polysaccharide in nature, which has good cytocompatibility and tissue compatibility, and has strong antibacterial activity. Adding nano-silver and chitosan at the same time when preparing the mask can play a go...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A41D13/11
Inventor 王常勇李俊杰杨桂利周瑾
Owner INST OF BASIC MEDICAL SCI ACAD OF MILITARY MEDICAL SCI OF PLA
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