Antibacterial and high absorptive composite material of polymer, and preparation method

A technology of high water absorption and composite materials, which is applied in the field of preparation of high water absorption polymer composite materials. The effect of liquid absorption performance and good antibacterial performance

Inactive Publication Date: 2006-04-19
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the synthesis methods of superabsorbent resin in my country mainly include solution method and suspension polymerization method (CN1294138A, CN1087749A, CN1394890A). Although the obtained product has excellent water absorption and water retention performance, it also has the problem that the quality does not meet the requirements of producing sanitary products.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Take 100g of acrylic acid, partially neutralize it with 25% sodium hydroxide, and the degree of neutralization is 75-80%; add 5g of porous nano-silica-loaded silver-based antibacterial agent, the amount of silver-loaded is 2wt% of the weight of the carrier, and stir vigorously , to make it fully dispersed; then add 0.05g of cross-linking agent N,N-methylenebisacrylamide and 0.6g of potassium persulfate, the temperature of the system is raised to 65-70°C for 6 hours, and then the product is taken out, washed, Drying, crushing, and sieving to obtain sodium polyacrylate / antibacterial agent composite water-absorbing materials with different particle sizes. Get 100 order products and carry out water absorption (salt) rate and antibacterial performance test, its water absorption rate is 1300g / g, saline absorption rate is 95g / g, and the sterilizing rate to Staphylococcus aureus is greater than 99%.

Embodiment 2

[0036]Take 200g of acrylic acid, neutralize with 30% sodium hydroxide, the neutralization degree is 95-100%; add a certain amount of acrylamide aqueous solution, the molar ratio of the two monomers is 1:0.2-0.3, and stir evenly. Add 10g of tourmaline-loaded silver-based antibacterial agent, the amount of silver-loaded is 1-2wt% of the weight of the carrier, stir vigorously to make it fully dispersed, then add 0.1g ethylene glycol diacrylate and 1g ammonium persulfate, the system Raise the temperature to 55-60°C and react for 6 hours, then take out the product, wash, dry, pulverize, and sieve to obtain (sodium acrylate-acrylamide) copolymer / antibacterial agent composite water-absorbing material products with different particle sizes. Get 100 order products and carry out water absorption (salt) rate and antibacterial performance test, its water absorption rate is 1200g / g, and saline absorption rate is 80g / g, and the sterilization rate to Staphylococcus aureus is greater than 99%....

Embodiment 3

[0038] Take 100g of acrylic acid, neutralize with 30% sodium hydroxide, the neutralization degree is 95-100%; add a certain amount of acrylamide aqueous solution, the molar ratio of the two monomers is 1:0.2-0.3, and stir evenly. Add 4g of starch and a certain amount of water into a three-necked flask, raise the temperature to 85°C, stir and gelatinize for 1 hour, then cool to room temperature, and add the monomer mixture into the starch solution. Add 10g of zeolite-loaded silver-based antibacterial agent, the amount of silver-loaded is 3wt% of the weight of the carrier, stir vigorously to make it fully dispersed, then add 0.3g1,3-dichloroisopropanol and 1.2g ammonium persulfate, and the system is heated to React at 55-60°C for 6 hours, then take out the product, wash, dry, pulverize, and sieve to obtain starch-grafted poly(sodium acrylate-acrylamide) copolymer / antibacterial agent composite water-absorbing material products with different particle sizes. Get 100 order products...

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Abstract

An antibacterial high-hydroscopicity polymer composition is composed of high-hydroscopicity polymer with cross-linked structure (75-100 Wt. Portions) and inorganic antibacterial agent (1-10). It is prepared through dispersing the inorganic antibacterial agent in monomer solution, adding trigger and cross-linking agent, and in-situ polymerizing.

Description

technical field [0001] The invention belongs to the field of water-absorbing polymer composite materials, and in particular relates to a superabsorbent polymer composite material with antibacterial properties and a preparation method of the antibacterial superabsorbent polymer composite material. technical background [0002] Super Absorbent Polymer (SAP) is a high-molecular polymer containing strong hydrophilic genes such as carboxyl groups and hydroxyl groups, and has a certain degree of cross-linking network structure. It is a special functional material. It is insoluble in water and organic solvents, and has unique properties. Through hydration, it can quickly absorb dozens or even thousands of times its own weight of water, and can also absorb dozens to 100 times of salt water, Liquids such as blood or urine, while having a strong water retention capacity. As a promising new functional polymer material, SAP is completely different from traditional water-absorbing mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/02C08L51/02C08L51/06C08K5/05
Inventor 唐芳琼张彦奇
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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