Chitosan microsphere loaded nano silver antibacterial polypropylene material, composite antibacterial agent and preparation method thereof

A technology of chitosan microspheres and composite antibacterial agent is applied in the field of composite antibacterial agent and its preparation. Chitosan microspheres are loaded with nano-silver antibacterial polypropylene material, which can solve the problems of high surface energy and large specific surface area, etc. Good compatibility, simple preparation process and cost reduction effect

Active Publication Date: 2020-02-18
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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A chitosan microsphere-loaded nano-silver antibacterial polypropylene material, the raw material composition comprises polypropylene resin and homemade chitosan microsphere / nano-silver composite antibacterial agent, wherein the polypropylene resin is 100 parts by weight, and the composite antibacterial agent 8 parts; the composite antibacterial agent uses chitosan microspheres as a carrier, and nano-silver is loaded on the chitosan microspheres, and the mass ratio of nano-silver to chitosan is 5 / 100.

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

[0034](1) Preparation of chitosan microspheres: Dissolve 100 mg chitosan powder in 50 mL acetic acid solution with a volume concentration (v / v) of 1% at room temperature, keep stirring until completely dissolved, and then wash with NaOH The pH value of the solution adjustment system was 5. Keep the state of magnetic stirring, use a syringe to draw 20 mL of sodi...

Embodiment 2

[0039] Except that the anionic gelling agent in the preparation step (1) of the chitosan microsphere / nano-silver composite antibacterial agent was adjusted to 20 mL of sodium tetrapolyphosphate solution with a concentration of 1 mg / mL, other process steps were the same as in Example 1 .

Embodiment 3

[0041] Except that the anionic surfactant in the step (2) of preparing the chitosan microsphere / nano-silver composite antibacterial agent was adjusted to 13.3 mg sodium lauryl sulfate, other process steps were the same as in Example 1.

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Abstract

The invention discloses a chitosan microsphere loaded nano silver antibacterial polypropylene material, 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 comprises the following steps of: (1) synthesizing a chitosan microsphere/nano silver composite antibacterial agent; and (2) blending the composite antibacterial agent and a polypropylene resin matrix to prepare the antibacterial polypropylene material. The composite antibacterial agent takes chitosan microspheres as carriers, and nano silver is loaded on the chitosan microspheres; and the composite antibacterial agent has the advantages of small dosage, environmental protection, low price, excellent and lasting antibacterial performance and the like, and the antibacterial polypropylene material prepared from the composite antibacterial agent not only has strong antibacterial performance, but also has improved mechanical performance. In addition, the composite antibacterial agent and antibacterial polypropylene material have simple preparation process and easy operation, are suitable for industrial application, and have high economic and social values.

Description

technical field [0001] The invention belongs to the field of polymer material modification, and specifically relates to a chitosan microsphere-loaded nano-silver antibacterial polypropylene material, a composite antibacterial agent and a preparation method thereof. The antibacterial polypropylene can be applied to various fields of production and life. Background technique [0002] Antibacterial materials refer to a new class of functional materials that can kill harmful bacteria or inhibit the growth and reproduction of bacteria. At present, the main objects used as antibacterial materials include textiles, plastics, ceramics, metals, coatings, etc. Among them, antibacterial plastics are more and more popular due to their wide application fields. Household appliances, sanitary ware, Children's toys have become a new development trend, and with the improvement of people's living standards, antibacterial plastics have received unprecedented attention and development. Polypro...

Claims

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Application Information

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Patent Type & Authority Applications(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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