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Degradable antiviral material, preparation method and application on masks

An anti-virus, benign solvent technology, applied in application, resistance to vector-borne diseases, rayon manufacturing, etc., can solve the problem of effective dispersion of organic and inorganic particles that cannot be viruses, avoid secondary pollution, and have good anti-virus performance. Effect

Active Publication Date: 2022-06-07
CHENGDU MEDART MEDICAL SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The first object of the present invention is to provide a method for preparing a degradable antiviral material in view of the above-mentioned problems, so as to solve the problem that the existing preparation method cannot effectively kill organic and inorganic particles capable of killing bacteria and viruses. Problems with dispersion into biodegradable polymers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A degradable antiviral material, the preparation process of which includes the following steps:

[0033] 1) Glycerol fatty acid ester, dextromic acid and trichloromethane were added to the three-mouth bottle by weight at 0.6:6:30 respectively, stirred to dissolve it to form a homogeneous solution;

[0034] 2) The nano titanium dioxide particles are added by weight of 0.1, and the dispersed and uniform suspension is prepared by stirring at a high speed of 2000r / min for 1h;

[0035]3) Heat up to 55 °C to remove chloroform, and then put into the tubular furnace, continue to heat to 140 °C, insulation reaction for 4h, through the glycerol fatty acid ester contained in a plurality of hydroxyl groups with the end of the dehydroameric acid molecule end hydroxyl and nano titanium dioxide particle surface of the hydroxyl group dehydration condensation to obtain a nuclear shell structure of degradable composite materials;

[0036] 4) Add triclosan with a weight of 0.08 to a degradabl...

Embodiment 2

[0040] A degradable antiviral material, the preparation process of which includes the following steps:

[0041] 1) Sucrose fatty acid ester, L-polylactic acid and dichloromethane were added to the three-mouth bottle by weight at 0.7:8:40 respectively, stirred to dissolve it, and formed a homogeneous solution;

[0042] 2) The nano titanium dioxide particles are added by weight of 0.2, and the dispersed and uniform suspension is prepared by stirring at a high speed of 2000r / min for 1h;

[0043] 3) Heat up to 50 °C to remove dichloromethane, and then put into the tubular furnace, continue to heat to 120 °C, insulation reaction for 6h, through the sucrose fatty acid contained in a plurality of hydroxyl groups contained in the polylactic acid end of the L-polylactic acid molecule and the hydroxyl group on the surface of the nano titanium dioxide particles for dehydration condensation to obtain a biodegradable composite material of the core-shell structure;

[0044] 4) Resveratrol with ...

Embodiment 3

[0048] A degradable antiviral material, the preparation process of which includes the following steps:

[0049] 1) Sucrose fatty acid ester, L-polylactic acid and dichloromethane were added to the three-mouth bottle by weight at 0.7:8:40 respectively, stirred to dissolve it, and formed a homogeneous solution;

[0050] 2) The nano titanium dioxide particles are added by weight of 0.2, and the dispersed uniform suspension is prepared by stirring at a high speed of 3000r / min for 1h;

[0051] 3) Heat up to 50 °C to remove dichloromethane, and then put into the tubular furnace, continue to heat to 120 °C, insulation reaction for 6h, through the sucrose fatty acid ester contained in a plurality of hydroxyl groups with the end of the dehydro-polylactic acid molecule end hydroxyl and nano titanium dioxide particle surface hydroxyl groups for dehydration condensation to obtain a biodegradable composite material of the core shell structure;

[0052] 4) Add hydroxyphenylpropyl ester with a w...

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Abstract

The invention discloses a degradable antiviral material and its preparation method and its application on a mask, comprising the following steps: S1, stirring and dissolving polyol surfactant, absorbable polymer and benign solvent in proportion to obtain A solution ; S2, adding nano-titanium dioxide to the A solution, and obtaining a suspension after stirring; S3, heating the suspension to remove the solvent, and after a certain period of heat preservation reaction, a degradable composite material is obtained; S4, combining the degradable composite material with the inhibitor The bacterial agent is ground into ultrafine powder; S5, adding the ultrafine powder into a solvent to form a composite colloid solution; S6, pouring the composite colloid solution into a mold, and forming it to obtain it. The invention uses the degradable polymer material as the matrix, utilizes its own degradability and the self-catalytic degradation performance of nano-titanium dioxide, and avoids the problem of secondary pollution caused by the refractory degradation of conventional protective mask materials.

Description

Technical field [0001] The present invention relates to the field of degradable mask manufacturing materials, in particular a degradable antiviral material and preparation method and application on masks. Background [0002] The protective mask developed in China can reach more than 99% of the protective effect of bacteria and phages as indicators, and the filtration efficiency can meet the requirements of 95% of the N95 protective mask ≥. There are many mask materials on the market at present, but their functions are relatively single, and they can only be shielded against relatively large diameter substances such as salty particles or / oily particles and bacteria, and it is difficult to play a specific protection for viruses with a diameter of no more than 100 nm. When medical institutions, especially emergency departments, respiratory departments and primary clinics, face some unknown risk of infection, they cannot obtain effective protection, and the risk of cross-infection a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08K13/02C08K5/136C08K3/22C08K5/103C08K5/13C08K5/134C08K5/1545D01F6/92D01F1/10A41D13/11A41D31/30
CPCC08K13/02C08K5/136C08K3/22C08K5/103C08K5/13C08K5/1545C08K5/1345D01F6/92D01F1/103A41D13/1192A41D31/30C08K2003/2241C08K2201/011C08L2201/06C08L2203/12C08L67/04Y02A50/30
Inventor 张晓金杨满王军
Owner CHENGDU MEDART MEDICAL SCI CO LTD
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