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Degradable antiviral material, and preparation method and application of degradable antiviral material in masks

An anti-virus and composite material technology, applied in applications, resistance to vector-borne diseases, rayon manufacturing, etc., can solve the problems of effective dispersion of organic and inorganic particles that cannot contain viruses, and achieve good anti-virus performance

Active Publication Date: 2020-06-16
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 kind of degradable antivirus material, its preparation process comprises the following steps:

[0033] 1) Glycerin fatty acid ester, D-polylactic acid and chloroform were respectively added into a three-necked flask in parts by weight of 0.6:6:30, and stirred to dissolve to form a homogeneous solution;

[0034] 2) The nano-titanium dioxide particles are added by 0.1 parts by weight, and stirred at a high speed of 2000r / min for 1h to obtain a uniformly dispersed suspension;

[0035] 3) Heat up to 55°C to remove chloroform, then put it into a tube furnace, continue heating to 140°C, and keep it warm for 4 hours, through the multiple hydroxyl groups contained on the glycerol fatty acid ester and the terminal hydroxyl groups of the D-polylactic acid molecule and the The hydroxyl groups on the surface of nano-titanium dioxide particles are dehydrated and condensed to obtain a degradable composite material with a core-shell structure;

[0036] 4) adding 0.08 parts by weigh...

Embodiment 2

[0040] A kind of degradable antivirus material, its preparation process comprises the following steps:

[0041] 1) Add sucrose fatty acid ester, L-polylactic acid and dichloromethane into a three-necked flask in parts by weight of 0.7:8:40, stir to dissolve, and form a homogeneous solution;

[0042] 2) The nano-titanium dioxide particles are added by 0.2 parts by weight, and stirred at a high speed of 2000r / min for 1h to obtain a uniformly dispersed suspension;

[0043] 3) Heat up to 50°C to remove dichloromethane, then put it into a tube furnace, continue heating to 120°C, and keep it warm for 6 hours. Through the multiple hydroxyl groups contained in the sucrose fatty acid ester and the terminal hydroxyl groups of the L-polylactic acid molecules and nano The hydroxyl groups on the surface of titanium dioxide particles are dehydrated and condensed to obtain a degradable composite material with a core-shell structure;

[0044] 4) adding 0.08 parts by weight of resveratrol to ...

Embodiment 3

[0048] A kind of degradable antivirus material, its preparation process comprises the following steps:

[0049] 1) Add sucrose fatty acid ester, L-polylactic acid and dichloromethane into a three-necked flask in parts by weight of 0.7:8:40, stir to dissolve, and form a homogeneous solution;

[0050] 2) The nano-titanium dioxide particles are added by 0.2 parts by weight, and stirred at a high speed of 3000r / min for 1h to obtain a uniformly dispersed suspension;

[0051] 3) Heat up to 50°C to remove dichloromethane, then put it into a tube furnace, continue heating to 120°C, and keep it warm for 6 hours, through the multiple hydroxyl groups contained on the sucrose fatty acid ester and the terminal hydroxyl groups of the D-polylactic acid molecule and the The hydroxyl groups on the surface of nano-titanium dioxide particles are dehydrated and condensed to obtain a degradable composite material with a core-shell structure;

[0052] 4) adding 0.08 parts by weight of propylparabe...

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Abstract

The invention discloses a degradable antiviral material, and a preparation method and application of the degradable antiviral material to masks, wherein the preparation method comprises the followingsteps: S1, stirring and dissolving a polyol surfactant, absorbable macromolecules and a benign solvent in proportion to obtain a solution A; S2, adding nano titanium dioxide into the solution A, and stirring to obtain turbid liquid; S3, heating the turbid liquid to remove the solvent, and carrying out heat preservation reaction for a certain time to obtain a degradable composite material; S4, grinding the degradable composite material and a bacteriostatic agent into ultrafine powder; S5, adding the ultrafine powder into the solvent to form a composite colloidal solution; and S6, pouring the composite colloidal solution into a mold, and carrying out shaping treatment. According to the invention, the degradable high polymer material is used as a matrix, and the self-degradability of the degradable high polymer material and the autocatalytic degradation performance of the nano titanium dioxide are utilized, so that the problem of secondary pollution caused by degradation difficulty of a conventional protective mask material is avoided, and a feasible raw material is provided for preparing the preventive mask for preventing various coronaviruses.

Description

technical field [0001] The invention relates to the field of degradable mask manufacturing materials, in particular to a degradable antiviral material and its preparation method and its application on masks. Background technique [0002] The protective effect of the protective masks developed in my country against bacteria and phages can reach more than 99%, and the filtration efficiency can meet the requirements of N95 protective masks ≥ 95%. However, in response to SARS, MERS, H1N1, H5N1 and A / H1V1 coronaviruses, especially the 2019-nCoV new coronavirus outbreak, the domestic market has not yet found a medical protective mask that can effectively block the new coronavirus. There are many masks currently on the market, but their functions are relatively single. They can only protect and block substances with relatively large diameters such as salty particles or / oily particles, bacteria, etc., but it is difficult to protect against viruses with a diameter of no more than 100n...

Claims

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Application Information

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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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