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A chitosan microsphere-loaded nano-silver antibacterial polypropylene material, composite antibacterial agent and preparation method thereof

A technology of chitosan microspheres and polypropylene materials is applied in the field of composite antibacterial agents and their preparation. Chitosan microspheres are loaded with nano-silver antibacterial polypropylene materials, which can solve the problems of large specific surface area and high surface energy, and achieve the goal of preparing Simple process, good compatibility, and the effect of improving biosafety

Active Publication Date: 2022-04-15
QUANZHOU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on the above factors, the present invention combines the characteristics of small size of nanomaterials, large specific surface area and high surface energy to provide a preparation method of nanocomposite antibacterial agent, and apply this antibacterial agent in the field of polymer materials. Related work has not yet been done at home and abroad. See the report

Method used

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  • A chitosan microsphere-loaded nano-silver antibacterial polypropylene material, composite antibacterial agent and preparation method thereof
  • A chitosan microsphere-loaded nano-silver antibacterial polypropylene material, composite antibacterial agent and preparation method thereof
  • A chitosan microsphere-loaded nano-silver antibacterial polypropylene material, composite antibacterial agent and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A chitosan microsphere load nano silver antibacterial polypropylene material, the feedstock composition comprises a polypropylene resin and a self-made chitosan microsphere / nano-silver composite antibacterial agent, wherein the polypropylene resin is 100 parts by weight, a composite antibacterial agent In 8 parts; the composite antibacterial agent is carried by chitosan microspheres, and nano silver is loaded on chitosan microspheres, and the mass ratio of nano silver and chitosan is 5 / 100.

[0033] The preparation method of the chitosan microsphere / nano silver composite antibacterial agent is:

[0034](1) Preparation of chitosan microspheres: At room temperature, 100 mg of chitosan powder is dissolved in 50 ml of volume concentration (V / V) to 1% acetic acid solution, continuously stirred until completely dissolved, then use NaOH The pH of the solution regulation system was 5. Keeping the magnetic stirring state, a 20 ml concentration of 1 mg / ml of a tripolyphosphat...

Embodiment 2

[0039] Other process steps are the same as in Example 1 in addition to the second polyphosphate solution of 20 ml of a concentration of 1 mg / ml in addition to a 20 ml concentration of 1 mg / ml, in addition to the anionic gel of the preparation of the chitosan microsphere / nano silver composite antibacterial step (1). .

Embodiment 3

[0041] The other process steps were the same as those in Example 1 in addition to the first embodiment.

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Abstract

The invention discloses a nano-silver antibacterial polypropylene material loaded with chitosan microspheres, a composite antibacterial agent and a preparation method thereof, belonging to the field of polymer material modification. The preparation method of the chitosan microsphere-loaded nano-silver antibacterial polypropylene material includes: (1) synthesizing chitosan microsphere / nano-silver composite antibacterial agent; (2) blending the composite antibacterial agent with a polypropylene resin matrix to prepare an antibacterial Polypropylene material. The composite antibacterial agent uses chitosan microspheres as a carrier, and nano-silver is loaded on the chitosan microspheres, and the composite antibacterial agent has the advantages of less dosage, environmental protection, low price, excellent and durable antibacterial performance, etc. , and the resulting antibacterial polypropylene material not only has strong antibacterial properties, but also has improved mechanical properties. In addition, the preparation process of the composite antibacterial agent and antibacterial polypropylene material is simple, easy to operate, suitable for industrial applications, and has high economic and social value.

Description

Technical field [0001] The present invention belongs to the field of high molecular material modification, and more particularly to chitosan microspheres, a combined nano-bacterial polypropylene material, a composite antibacterial agent, and a preparation method thereof, which can be used in various fields of production and life. Background technique [0002] Antibacterial material refers to a new type of functional material that has kills harmful bacteria or inhibits bacterial growth reproduction. At present, the main objects used as antibacterial materials include textiles, plastics, ceramics, metals, coatings, etc., of which antibacterial plastics are widespread due to extensive applications, and they are increasingly favored by people, using antibacterial plastics, sanitary cleansing tools, Children's toys have become a new development trend, and with the improvement of people's living standards, antibacterial plastics are unprecedented and developed. Polypropylene (PP) is on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L5/08C08K9/12C08K3/08
CPCC08L23/12C08K2201/011C08K2003/0806C08L5/08C08K9/12C08K3/08
Inventor 许静陈继锡方军
Owner QUANZHOU NORMAL UNIV
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