Photodynamic antibacterial cellulose material and preparation method thereof

A photodynamic antibacterial and antibacterial fiber technology, applied in fiber processing, plant fibers, textiles and papermaking, etc., can solve the problems of unsuitability for industrial production, limited, and restricting the development of photodynamic antibacterial fibers.

Active Publication Date: 2017-05-10
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, to graft photosensitizers onto fabrics or fabric fibers, it is usually necessary to do more complex treatments to the fabrics to provide active groups that can couple photosensitizers; or under harsh reaction conditions (such as high temperature, water barrier etc.) grafted with photosensitizers, these treatm...

Method used

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  • Photodynamic antibacterial cellulose material and preparation method thereof
  • Photodynamic antibacterial cellulose material and preparation method thereof
  • Photodynamic antibacterial cellulose material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Preparation of zinc phthalocyanine-ε-polylysine cellulose

[0059] 1. Soak 1g of cellulose fabric in 50ml of 1g / L ε-polylysine (containing 25-30 L-lysine residues) aqueous solution at 37°C, take it out after 30 minutes, and wash it with water Remove unadsorbed ε-polylysine from the fabric and dry it for later use.

[0060] 2. Dissolve 0.06mmol (37.32mg) β-monocarboxy substituted zinc phthalocyanine in N,N-dimethylformamide (DMF) solvent, add 1-hydroxybenzotriazole (HOBT) and twice the molar equivalent The N,N'-dicyclohexylcarbodiimide (DCC) was activated for 30 minutes, then added to the cellulose fabric prepared in the first step and reacted at room temperature for 24 hours, and the unreacted β-monocarboxyl substituted phthalein was washed away with DMF Zinc cyanine, and then wash the fabric 3 times with clear water, and dry to obtain zinc phthalocyanine-ε-polylysine cellulose.

Embodiment 2

[0062] Preparation of zinc phthalocyanine-ε-polylysine cellulose microspheres

[0063] 1. Soak 1g of cellulose microspheres in 50ml of 45g / L ε-polylysine (containing 25-30 L-lysine residues) aqueous solution at 10°C, take it out after 90 minutes, and rinse with water Wash to remove unadsorbed ε-polylysine, and dry it for later use.

[0064] 2. Dissolve 0.12mmol (74.64mg) β-monocarboxy substituted zinc phthalocyanine in N,N-dimethylformamide (DMF) solvent, add 1-hydroxybenzotriazole (HOBT) and twice the molar equivalent The N,N'-dicyclohexylcarbodiimide (DCC) was activated for 20 minutes, then the cellulose microspheres prepared in the first step were added and the reaction was shaken at room temperature for 12 hours, and the unreacted β-monocarboxyl substitution was washed away with DMF. The zinc phthalocyanine was washed three times with clear water, and dried to obtain the zinc phthalocyanine-ε-polylysine cellulose microspheres.

Embodiment 3

[0066] Photodynamic antibacterial properties of zinc phthalocyanine-ε-polylysine cellulose materials

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Abstract

The invention relates to a photodynamic antibacterial cellulose material and a preparation method thereof. Epsilon-polylysine is attached to the cellulose material and further modified with photo-sensitizers through amidogen of the epsilon-polylysine, the epsilon-polylysine provides a first antibacterial performance of the material, and the photo-sensitizers provide a second antibacterial performance of the material. The preparation method of the material is simple in process, mild in reaction condition and suitable for industrial production, and final cellulose products with double antibacterial performances can be used for preparing medical antibacterial fibers or daily antibacterial textiles.

Description

technical field [0001] The present invention relates to a cellulose material that can be used for photodynamic antibacterial and its preparation method, in particular to modifying the surface of cellulose material through two processes of non-covalent electrostatic adsorption and covalent connection, loading an antibacterial photosensitizer, and thereby The formed cellulose material with high-efficiency photodynamic antibacterial properties belongs to the technical category of functional materials. Background technique [0002] Antibacterial fiber is a functional fiber formed by introducing substances capable of inhibiting bacterial growth, that is, antibacterial agents, into the surface and interior of fibers by physical or chemical methods. With the improvement of people's living standards and the enhancement of health awareness, especially in recent years, various drug-resistant bacteria and epidemic viruses have ravaged the market, and the demand for antibacterial fibers...

Claims

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Application Information

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IPC IPC(8): D06M15/59D06M13/503C08J7/12D06M101/06
CPCC08J7/12C08J2301/02D06M13/503D06M15/59D06M2101/06
Inventor 黄明东陈锦灿陈卓胡萍
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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