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Fully degradable non-woven material for medical treatment and public health

A medical and sanitary, non-woven technology, applied in the field of medical and sanitary materials, can solve the problems of insufficient antibacterial and bacteriostatic properties, incomplete degradation, poor strength or toughness, etc., and achieves good water absorption effect, excellent moisture absorption performance, and high use comfort. Effect

Active Publication Date: 2019-11-01
HENAN YADU IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a fully degradable non-woven material for medical and sanitary use, which can effectively solve the problems of incomplete degradation, insufficient antibacterial and antibacterial properties, poor strength or toughness, and poor hygroscopicity existing in existing degradable medical and sanitary materials.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Fully degradable non-woven material for medical treatment and public health
  • Fully degradable non-woven material for medical treatment and public health
  • Fully degradable non-woven material for medical treatment and public health

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A fully degradable non-woven fabric material for medical and sanitation. The non-woven fabric material is composed of polyvinyl alcohol grafted modified polylactic acid, polybutylene succinate, modified lignin, dopamine, and nano-silver.

[0031] Further, the preparation method of the modified lignin is to carry out wet ball milling of lignin, and then use ionic liquids [Bmim]Cl and [Emim]OAc to modify the lignin after ball milling to obtain modified lignin .

[0032] Further, the synthesis method of polyvinyl alcohol grafted modified polylactic acid is as follows: adding polyvinyl alcohol into dry DMSO, after dissolving, adding stannous octoate toluene solution with a mass concentration of 0.4% to 0.5%, stirring Transfer to the polymerization reactor after being uniform; another lactide is dissolved in dry DMSO, and then added to the polymerization reactor; the polymerization reactor is heated to 90°C after 3 times of vacuuming and nitrogen filling, and the reaction is...

Embodiment 2

[0043] A fully degradable non-woven fabric material for medical and sanitation. The non-woven fabric material is composed of polyvinyl alcohol grafted modified polylactic acid, polybutylene succinate, modified lignin, dopamine, and nano-silver.

[0044] Further, the preparation method of the modified lignin is to carry out wet ball milling of lignin, and then use ionic liquids [Bmim]Cl and [Emim]OAc to modify the lignin after ball milling to obtain modified lignin .

[0045] Further, the synthesis method of polyvinyl alcohol grafted modified polylactic acid is as follows: adding polyvinyl alcohol into dry DMSO, after dissolving, adding stannous octoate toluene solution with a mass concentration of 0.4% to 0.5%, stirring Transfer to the polymerization reactor after being uniform; another lactide is dissolved in dry DMSO, and then added to the polymerization reactor; the polymerization reactor is heated to 90°C after 3 times of vacuuming and nitrogen filling, and the reaction is...

Embodiment 3

[0056] A fully degradable non-woven fabric material for medical and sanitation. The non-woven fabric material is composed of polyvinyl alcohol grafted modified polylactic acid, polybutylene succinate, modified lignin, dopamine, and nano-silver.

[0057] Further, the preparation method of the modified lignin is to carry out wet ball milling of lignin, and then use ionic liquids [Bmim]Cl and [Emim]OAc to modify the lignin after ball milling to obtain modified lignin .

[0058] Further, the synthesis method of polyvinyl alcohol grafted modified polylactic acid is as follows: adding polyvinyl alcohol into dry DMSO, after dissolving, adding stannous octoate toluene solution with a mass concentration of 0.4% to 0.5%, stirring Transfer to the polymerization reactor after being uniform; another lactide is dissolved in dry DMSO, and then added to the polymerization reactor; the polymerization reactor is heated to 90°C after 3 times of vacuuming and nitrogen filling, and the reaction is...

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Abstract

The invention discloses a fully degradable non-woven material for medical treatment and public health. The non-woven material is composed of polylactic acid modified by polyvinyl alcohol grafting, polybutylene succinate, modified lignin, dopamine and nano silver. A dopamine active layer is obtained through self-assembly on the surface of a polybutylene succinate electrospun fiber web, then the reduction and fixation of the nano silver are achieved through one-step immersion, and then a modified polylactic acid melt is spun into a web and combined with the electrospun fiber web through hot rolling, so that the non-woven fabric has excellent mechanical properties while full degradation is ensured. The provided fully degradable non-woven material for the medical treatment and public health has excellent mechanical properties, good water absorption and water retention performance, a high sterilization speed, a long-lasting bacteriostatic function, a short degradation cycle, a high decomposition rate, and better application prospects in the field of medical treatment and public health.

Description

technical field [0001] The invention belongs to the field of medical and sanitary materials, and in particular relates to a fully degradable non-woven material for medical and sanitary use. Background technique [0002] The non-woven fabrics used in current disposable medical and sanitary products are all based on polyolefin resin, which can degrade in the natural environment for hundreds of years, causing serious pollution to the environment. In addition, most of the existing non-woven fabrics for medical and sanitary use do not have antibacterial properties or have weak antibacterial ability. Improper storage or use can easily cause secondary pollution and cross-infection, posing a threat to the health of users. [0003] Chinese invention patent application (publication number CN104532401A) discloses a kind of biodegradable superabsorbent non-woven fabric. The non-woven fabric is compounded by 30-50wt% multifunctional superabsorbent seaweed fiber and 50-70wt% polylactic a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/011D04H3/015D04H3/147D01D13/00D01D1/04C08H7/00C08G63/08D06M11/83D06M15/37D06M16/00D06M101/32
CPCC08G63/08C08H6/00D01D1/04D01D13/00D04H3/011D04H3/015D04H3/147D06M11/83D06M15/37D06M16/00D06M2101/32
Inventor 张正男段书霞周静杨敬鹏韩涵崔彬彬郝明张鹏王喜卫赵燕魏聪韩颖周永恒
Owner HENAN YADU IND
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