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Antibacterial degradable composite material and application thereof in preparation of paper diapers

A composite material and polymer technology, used in the field of sanitary products, can solve the problems of slow degradation, not easy to degrade, and unfavorable environmental protection, and achieve the effects of large liquid absorption, convenient operation, and improved absorption rate and infiltration rate.

Active Publication Date: 2020-04-07
杭州千芝雅卫生用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, traditional diapers are disposable products, which are expensive and not conducive to environmental protection. They are not easy to degrade or degrade slowly. If they are not treated or piled up after use, they will easily cause environmental pollution.

Method used

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  • Antibacterial degradable composite material and application thereof in preparation of paper diapers
  • Antibacterial degradable composite material and application thereof in preparation of paper diapers
  • Antibacterial degradable composite material and application thereof in preparation of paper diapers

Examples

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preparation example Construction

[0027] A preparation method of an antibacterial and degradable composite material, comprising: providing a polyaspartic acid / lignocellulose polymer network with water absorption; providing an antibacterial chitosan oligosaccharide viscose fiber, the chitosan oligosaccharide viscose fiber It is a polymer network support material; and, the polymer network and oligosaccharide viscose fiber are made into a non-woven composite material through a spunlace or needle punching process; the above-mentioned chitosan oligosaccharide viscose fiber is modified chitosan oligosaccharide and viscose The glue fiber is obtained by grafting and reacting with a gain agent and an environment with a pH of 6-8, and the above-mentioned gain agent is α-methacrylic acid and mercaptoacetic acid. The composite material prepared by the method has good antibacterial performance, fast absorption rate and infiltration rate, large liquid absorption capacity, longitudinal flow conductivity, and can preserve liqu...

Embodiment 1

[0047] A kind of preparation method of antibacterial degradable composite material, its specific steps are as follows:

[0048] (1) oligochitosan is dissolved in hot water to make a solution with a concentration of 5.5%. After being cooled to room temperature, sodium methacryl sulfonate with 23% weight of oligochitosan is added thereto and stirred to dissolve, then to it Add potassium persulfate with 4.5% weight of chitosan oligosaccharide, adjust the pH of the system to 7, heat up to 80°C and react for 4.5 hours to obtain the modified chitosan oligosaccharide solution;

[0049] (2) Add a sodium hydroxide solution with a concentration of 1 wt% to the viscose fiber at a bath ratio of 1:11, react at 85° C. for 45 minutes, wash with soft water until neutral, dry, and set aside;

[0050] (3) Add modified chitosan oligosaccharide solution to the viscose fiber at a ratio of 1:12, and then add 0.6% weight gain agent of chitosan oligosaccharide, adjust the pH of the system to 7, and k...

Embodiment 2

[0055] A kind of preparation method of antibacterial degradable composite material, wherein the difference with embodiment 1 is:

[0056] The addition of step (1) sodium methacrylate is 35% of chitosan weight;

[0057] Step (3) the amount of gain agent added is 0.75% of the chitosan weight, and the weight ratio of α-methacrylic acid and thioglycolic acid in the gain agent is 1:0.35;

[0058] Step (4) the weight ratio of lignocellulose and polyaspartic acid and crosslinking agent glutaraldehyde is 1:12:0.5;

[0059] Step (5) take polyaspartic acid / lignocellulose polymer network and chitosan oligosaccharide viscose fiber, alginate fiber and activated carbon fiber and make antibacterial and degradable composite material of non-woven fabric type through acupuncture process, above-mentioned The composite material includes 30wt% polyaspartic acid / lignocellulose polymer network, 60wt% oligochitosan viscose fiber, 5wt% alginate fiber and 5wt% activated carbon fiber;

[0060] Step (6...

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Abstract

The invention provides an antibacterial degradable composite material and application thereof in preparation of paper diapers, belonging to the field of sanitary products. A preparation method of thecomposite material comprises the following steps: providing a polyaspartic acid / lignocellulose polymer network; providing chitosan oligosaccharide viscose fibers; and preparing the non-woven fabric type composite material from the polymer network and oligosaccharide viscose fibers through a spunlace or needling process, wherein the chitosan oligosaccharide viscose fibers are obtained by a graftingreaction of modified chitosan oligosaccharide with viscose fibers in the presence of a gaining agent and in an environment with a pH value of 6-8, and the gaining agent is composed of alpha-methacrylic acid and mercaptoacetic acid. With the preparation method provided by the invention, an absorption rate and an infiltration rate can be increased, a longitudinal diffusion length and a longitudinaldiffusion area are increased, and longitudinal flow guide performance is enhanced; the prepared composite material is good in antibacterial property, good in bidirectional circulation air permeability, large in liquid absorption amount, excellent in water absorption and water locking effect and biodegradable, can be used as a material of a flow guide layer, an absorption layer, a water locking layer or an air permeable layer for preparation of paper diapers, and is comfortable and has a health care function in use.

Description

technical field [0001] The invention belongs to the field of sanitary products, and in particular relates to an antibacterial and degradable composite material and its application in preparing paper diapers. Background technique [0002] With the rapid development of global industry and the continuous improvement of people's living standards, the pursuit of quality of life tends to be more environmentally friendly and healthy, and the antibacterial problem of sanitary products has attracted more and more attention. Human skin is a good nutrient base for bacteria, and sanitary products are materials that human beings come into contact with frequently. The porous shape of sanitary products and the chemical structure of high molecular polymers are conducive to the attachment of microorganisms, so hygienic products Supplies become good hosts for the survival and reproduction of microorganisms. [0003] Taking diapers as an example, diapers are nursing products designed for infa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L15/26A61L15/28A61L15/40A61L15/42A61L15/46A61L15/62
CPCA61L15/26A61L15/28A61L15/40A61L15/42A61L15/46A61L15/62C08L77/04C08L97/005C08L5/08
Inventor 吴跃
Owner 杭州千芝雅卫生用品有限公司
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