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A kind of two-component antibacterial cellulose material and its preparation method and application

A cellulose, two-component technology, applied in plant fibers, fiber treatment, textiles and papermaking, etc., can solve the problem that the antibacterial effect of composite cellulose materials far exceeds that of a single photosensitizer or a single silver nanoparticle, and the antibacterial effect is limited, etc. problem, to achieve the effect of broad spectrum of antibacterial action, short diffusion distance and small damage

Active Publication Date: 2021-06-22
中科光达(青岛)健康科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem of limited antibacterial effect of existing antibacterial fiber materials, and provides a two-component antibacterial cellulose material, which contains photosensitizer and silver nanoparticles at the same time, wherein the photosensitizer and silver nanoparticles have a strong interaction Promoted, the antibacterial effect of its composite cellulose material far exceeds that of a single photosensitizer or a single silver nanoparticle

Method used

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  • A kind of two-component antibacterial cellulose material and its preparation method and application
  • A kind of two-component antibacterial cellulose material and its preparation method and application
  • A kind of two-component antibacterial cellulose material and its preparation method and application

Examples

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Effect test

Embodiment 1

[0021] Embodiment 1: Preparation monocarboxy phthalocyanine zinc-nanometer silver cellulose

[0022] 1. Dissolve β-monocarboxyl substituted zinc phthalocyanine in N,N-dimethylformamide (DMF) solvent, add twice the molar equivalent of N,N-carbonyldiimidazole (CDI), and activate at 80°C React for 3 hours, then add cellulose fabric, shake and react at 80°C for 24 hours, then wash off the unreacted β-monocarboxyl substituted zinc phthalocyanine with DMF, wash the fabric several times with water, and dry to obtain zinc phthalocyanine cellulose .

[0023] 2. Soak the zinc phthalocyanine cellulose prepared in the first step in the silver nitrate solution at room temperature for 24 hours, and react for 10 minutes under high temperature and high pressure conditions with a temperature of 121°C and a pressure of 0.1Mpa. The fabric was washed with clear water for 3 times, and dried to obtain zinc phthalocyanine-nanometer silver cellulose.

Embodiment 2

[0024] Example 2: Preparation of pyropheophorbide-a-nano silver cellulose

[0025] 1. Dissolve pyropheophorbide-a in N,N-dimethylformamide (DMF) solvent, add twice the molar equivalent of O-benzotriazole-tetramethyluronium hexafluorophosphate (HBTU), N,N-diisopropylethylamine (DIEA) with a total volume ratio of 0.5%, activated at room temperature for 0.5 hours, then added to cellulose fabric, shaken at 80°C for 24 hours, and then washed with DMF Wash the unreacted pyropheophorbide-a fabric several times with water, and dry to obtain pyropheophorbide-a cellulose.

[0026] 2. Soak the pyropheophorbide-a cellulose prepared in the first step in silver nitrate solution at room temperature for 20 hours, and react under high temperature and high pressure conditions with a temperature of 121°C and a pressure of 0.1Mpa. After 10 minutes, take out and wash the fabric with clean water for 3-5 times, and dry to obtain pyropheophorbide-a-nano silver cellulose.

Embodiment 3

[0027] Embodiment 3: Preparation of chlorin e6-nanometer silver cellulose

[0028] 1. Dissolve chlorin e6 in N,N-dimethylformamide (DMF) solvent, add six times the molar equivalent of 1-hydroxybenzotriazole (HOBT) and dicyclohexylcarbodiimide ( DCC), activated at 0°C for 30 minutes, then added cellulose fabric, oscillated for 24 hours at 80°C, then washed away the unreacted chlorin e6 with DMF, washed the fabric several times with water, and dried to obtain Pyropheophorbide-a cellulose.

[0029] 2. Soak the chlorin e6 cellulose prepared in the first step in the silver nitrate solution at room temperature for 20 hours, and react for 10 minutes under high temperature and high pressure conditions with a temperature of 121°C and a pressure of 0.1Mpa Take out and wash the fabric with clean water for 3-5 times, and dry to obtain chlorin e6-nanometer silver cellulose.

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Abstract

The present invention relates to a two-component antibacterial cellulose material and its preparation method and application, which is to covalently graft the carboxyl group on the photosensitizer and the hydroxyl group on the cellulose, and then fill the gaps on the cellulose fabric with nano-silver, thereby obtaining The binary cellulose material can produce a large amount of active oxygen, and the active oxygen produced by the combination of photosensitizer and nano-silver is much more than that produced independently, and the antibacterial effect is far more than that of a single photosensitizer or silver alone. Nanoparticles, the preparation method of the material is simple, the reaction conditions are relatively mild, suitable for industrial production, and can be used to prepare medical antibacterial fibers or daily antibacterial textiles.

Description

technical field [0001] The invention belongs to the technical field of new functional materials, and in particular relates to a two-component antibacterial cellulose material and its preparation method and application. Background technique [0002] Hospital-acquired infections (HAIs) have drawn widespread attention to the emergence of superbugs. Hospital equipment such as textiles, for example, are known to be media conducive to the growth of microorganisms at the proper moisture, nutrient and temperature levels. The growth of microorganisms on textiles can have a range of adverse effects, including unpleasant odors and stains, and can even increase the risk of secondary infections for patients. Therefore, it is particularly important to make textiles have antibacterial properties. However, the antibacterial effect of existing materials such as textiles is limited. [0003] Recently, The Lancet magazine proposed that photodynamic antimicrobial therapy can be used as an ef...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/83D06M13/503D06M101/06
Inventor 陈静怡黄明东陈锦灿陈卓袁彩江龙光
Owner 中科光达(青岛)健康科技有限公司
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