Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of composite antibacterial additive and preparation method thereof

An antibacterial additive and composite technology, applied in the field of antibacterial agents, to achieve the effects of stable performance, improved dispersion and excellent antibacterial performance

Active Publication Date: 2019-04-12
NINGBO UNIV +2
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Combining layered dihydroxy hydroxides and heteropolyacids to prepare composite antibacterial agents has not been reported

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of composite antibacterial additive and preparation method thereof
  • A kind of composite antibacterial additive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Step (1): Preparation of Mg-Al LDH

[0038] MgCl 2 ·6H 2 O 8.13g (0.04mol) and Al 2 (SO4) 3 18H 2 O 6.66g (0.01mol) was dissolved in 100ml deionized water to prepare a solution, and the temperature was raised to 70°C; 11.45g NaCO3·10H was weighed 2 O (0.04mol) was dissolved in 30ml of ionized water to prepare a solution and added dropwise to the above solution in a constant pressure dropping funnel, and finally adjusted the pH to about 8.0 with 10wt% NaOH solution, continued to stir and reflux for 2 hours, aged for 6 hours, and filtered Wash until the solution is neutral, add water to prepare a slurry for storage.

[0039] Step (2): Phosphomolybdic acid anion intercalation LDH

[0040] Heat the Mg-Al LDH slurry obtained in step (1) to 65°C and stir rapidly, then adjust the pH value to 6.0 with nitric acid solution, dissolve 1.51g (0.0008mol) sodium phosphomolybdate in deionized water and drop slowly Add it to the above slurry, react for 3 hours, then wash away th...

Embodiment 2

[0047] Step (1): Preparation of Zn-Al LDH

[0048] Zn(NO 3 ) 2 ·6H 2 O 1.78g (0.006mol) and Al 2 (SO4) 3 18H 2 O 1.00g (0.0015mol) was dissolved in 50ml deionized water to prepare a solution, heated to 80°C, and weighed 0.69g K 2 CO 3 (0.005mol) was dissolved in 20ml of ionized water to prepare a solution and added dropwise to the above solution in a constant pressure dropping funnel, and finally adjusted the pH to about 8.5 with 10wt% NaOH solution, continued to stir and reflux for 3h, aged for 5h, filtered and washed When the solution is neutral, add water to prepare a slurry for storage.

[0049] Step (2): Phosphotungstic acid anion intercalation LDH

[0050] Heat the Zn-Al LDH slurry obtained in step (1) to 60°C and stir rapidly, then adjust the pH value to 5.5 with nitric acid solution, dissolve 0.18g (0.00006mol) sodium phosphotungstate in deionized water and drop slowly Add it to the above slurry, react for 2 hours, then wash away the unintercalated ions with d...

Embodiment 3

[0056] Step (1): Preparation of Mg-Al LDH

[0057] MgCl 2 ·6H 2 O 4.06g (0.02mol) and Al 2 (SO 4 ) 3 18H 2 O 13.33g (0.02mol) was dissolved in 100ml deionized water to prepare a solution, heated up to 30°C, weighed 6.07g KNO3 (0.06mol) was dissolved in 50ml ionized water to prepare a solution and placed in a constant pressure dropping funnel dropwise To the above solution, finally use 10wt% NaOH solution to adjust the pH to about 9.0, continue to stir and reflux for 3 hours, age for 10 hours, filter and wash until the solution is neutral, add water to prepare a slurry for storage.

[0058] Step (2): Intercalation of LDH with silicotungstic acid anions

[0059] Heat the Mg-Al LDH slurry obtained in step (1) to 65°C and stir rapidly, then adjust the pH value to 6.5 with nitric acid solution, dissolve 2.88g (0.001mol) silicotungstic acid in deionized water and slowly add it dropwise Into the above slurry, react for 3 hours, then wash away the unintercalated ions with deion...

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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a compound type antibacterial additive and a preparation method thereof. The compound type antibacterial additive is prepared by adopting lamellar double hydroxide LDH as a template, and heteropoly acid anions, silver ions and sulfonate containing long-chain alkyl with mold resistance are introduced between LDH layers through ion exchange, wherein the molar mass ratio of the heteropoly acid anions to the LDH is 1:1000 to 1:5, the molar mass ratio of the sulfonate to the LDH is 1:100 to 1:2, and the molar mass ratio of the silver ions to the LDH is 1:100 to 1:1. The compound type antibacterial additive provided by the invention has high-efficient, durable and broad-spectrum mold resistance; meanwhile, due to the existence presence of the sulfonate containing the long-chain alkyl, the compatibility of the LDH, the heteropoly acid anions and a polymer is increased, so that the compound type antibacterial additive can be uniformly dispersed in the polymer, has the advantages of environment protection, safety, wide raw material source, easiness in realizing industrialization of preparation process, and the like, can be used as an antibiotic additive, and has a better application prospect in the fields of food packaging, medical treatment, sanitation, environmental protection and the like.

Description

technical field [0001] The invention belongs to the technical field of antibacterial agents, and in particular relates to a composite antibacterial additive and a preparation method thereof. Background technique [0002] Polymer materials have the advantages of low cost, easy processing, and corrosion resistance, and have become one of the most widely used basic materials. However, when it is used in the fields of food packaging, medical treatment, sanitation and environmental protection, due to environmental reasons, it is easy to cause bacterial growth and bring many unsafe factors to people's lives. Therefore, when used in many occasions, there are certain requirements for the antibacterial properties of polymer materials. Therefore, according to the characteristics of the polymer material itself, it is very necessary to introduce suitable antibacterial agents to endow it with good antibacterial properties. Common antibacterial agents include inorganic antibacterial age...

Claims

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/04C08K9/02C08K3/22C01F7/00C01G9/00
CPCC01F7/00C01G9/00C01P2002/22C01P2002/72C08K3/22C08K9/02C08K9/04
Inventor 曹国洲刘在美李娟朱晓艳肖道清
Owner NINGBO UNIV