Nano antibacterial hemp fibers and preparation method and application thereof

An antibacterial hemp and fiber-like technology, which is applied in fiber treatment, plant fiber, biochemical fiber treatment, etc., can solve the problems of decreased antibacterial effect and inconspicuous antibacterial effect, achieve good dispersion and uniformity, realize antibacterial performance and resistance The effect of washing

Inactive Publication Date: 2019-07-26
INST OF BAST FIBER CROPS CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the field of hemp, the existing patent CN108823963A discloses a preparation method of an industrial hemp antibacterial fiber material, and an industrial hemp fiber with a quaternary ammonium functional group is prepared. % or more, but its antibacterial effect in a short period of time (1h) is not obvious, and the antibacterial effect will decrease with the number of washings

Method used

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  • Nano antibacterial hemp fibers and preparation method and application thereof
  • Nano antibacterial hemp fibers and preparation method and application thereof
  • Nano antibacterial hemp fibers and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: Extraction of cannabis leaf plant extract

[0032] (1) Ultrasonic extraction of crushed marijuana flowers and leaves at room temperature (15-30°C) with methanol at a solid-to-liquid ratio of 1g:15mL (or 1:20 or 1:25), the ultrasonic extraction power is 90-110W, and the ultrasonic time 8-12min, then stand at room temperature for 50-100min, centrifuge at 3000-5000rpm for 4-6min, take the supernatant, and obtain the plant extract.

[0033] (2) Use ethanol with a solid-to-liquid ratio of 1g:15mL (or 1:20 or 1:25) to conduct ultrasonic extraction at room temperature (15-30°C) on the crushed cannabis flowers and leaves. The ultrasonic extraction power is 90-110W, and the ultrasonic time 8-12min, then stand at room temperature for 50-100min, centrifuge at 3000-5000rpm for 4-6min, take the supernatant, and obtain the plant extract.

[0034] (3) The crushed marijuana flowers and leaves are treated at room temperature (15-30° C. ) ultrasonic extraction, the ultras...

Embodiment 2

[0035] Embodiment 2: Preparation of nano antibacterial hemp fiber

[0036] Take 0.2g industrial hemp fiber, soak it in 20mL silver nitrate solution of 0.01-0.1mol / L, and place it at room temperature for 1-24h to make the fiber absorb silver ions;

[0037]Take out the fiber and squeeze it dry, put it into 20mL of distilled water, and place it in a water bath shaking box at 30-70°C. When the reaction system rises to 30-70°C, add 1-5mL of the plant extract in Example 1 , continue to react for 0.5-24h.

[0038] The fibers were taken out, washed with distilled water, and placed in an oven at 40°C until constant weight.

Embodiment 3

[0039] Example 3: Detection of the short-term antibacterial performance and wash-out resistance of the nano-antibacterial hemp fiber

[0040] Prepare contrast antibacterial industrial hemp fiber according to the method of embodiment 2, just select conventional sodium borohydride reducing agent, group into industrial hemp fibril+AgNO 3 +NaBH 4 ; Only soak industrial hemp fibrils with silver nitrate solution to prepare silver ion adsorption type contrast antibacterial industrial hemp fibers, grouped as industrial hemp fibrils+AgNO 3 ;

[0041] The antibacterial industrial hemp fiber prepared in Example 2 for the nano-hemp antibacterial fiber of the present invention is different in that one uses methanol to extract industrial hemp flowers and leaves, and the other uses ethanol to extract industrial hemp flowers and leaves, and is grouped into industrial hemp fibrils+AgNO 3 +Plant extract (methanol) and industrial hemp fibrils+AgNO 3 +Plant extract (ethanol);

[0042] Evaluat...

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Abstract

The invention relates to the technical field of hemp antibacterial materials, and discloses nano antibacterial hemp fibers and a preparation method and application thereof. The nano antibacterial hempfibers are obtained by soaking hemp fibers in a silver ion solution and reacting the hemp fibers with an industrial hemp flower and leaf plant extracting solution. According to the method, the silverion solution is used as a silver source precursor, the plant extracting solution is used as a biological reducing agent, silver ions are reduced in situ by using the industrial hemp flower leaf plantextracting solution after the hemp fibers adsorb the silver ions, nano silver particles grow on the surfaces or insides of the fibers, and the reacted nano antibacterial hemp fibers have high-efficiency, fast and durable antibacterial performance and washing resistance.

Description

technical field [0001] The invention relates to the technical field of hemp antibacterial materials, in particular to a nano antibacterial hemp fiber and its preparation method and application. Background technique [0002] Hemp is a fiber obtained from various hemp plants, including bast fibers from the cortex of annual or perennial herbaceous dicotyledonous plants and leaf fibers from monocotyledonous plants. Bast fiber crops mainly include ramie, jute, kenaf, hemp, flax, and apocynum. Hemp fiber has advantages that are incomparable to other fibers: good moisture absorption, moisture dissipation and breathability, fast heat transfer and heat conduction, cool and crisp, sweating is not close to the body, light texture, strong, insect-proof and mildew-proof, less static electricity, and the fabric is not easy to be polluted , The color is soft and generous, rough, suitable for the excretion and secretion of human skin. [0003] my country is the first country in the world ...

Claims

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Application Information

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IPC IPC(8): D06M11/83D06M101/06
CPCD06M11/83D06M16/00D06M2101/06
Inventor 常丽赵立宁李德芳黄思齐潘根唐慧娟李建军陈安国张翠萍
Owner INST OF BAST FIBER CROPS CHINESE ACADEMY OF AGRI SCI
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