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Natural biochar-chitosan-based camellia oil composite material and preparation method thereof

A composite material, biochar technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of poor slow release performance and complicated process, and achieve the effect of enhancing adsorption performance, simple process and good slow release performance.

Active Publication Date: 2022-04-29
广州美颂化妆品有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In existing reports, the combination of biochar and chitosan is mainly obtained through acetic acid pretreatment and sodium hydroxide coagulation to obtain composite materials, but its slow-release performance is not good, and the process is cumbersome

Method used

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  • Natural biochar-chitosan-based camellia oil composite material and preparation method thereof
  • Natural biochar-chitosan-based camellia oil composite material and preparation method thereof
  • Natural biochar-chitosan-based camellia oil composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Preparation of AC: Dried camellia dregs were crushed and passed through a 100-mesh sieve to make the particles uniform. Three portions of 15.00 g (M) tea dregs were weighed in a crucible, and after being carbonized in an electromagnetic furnace, placed in a programmed temperature-controlled muffle furnace for ashing 6 h (both set the heating rate at 10°C·min -1 ), at 400°C, 500°C, and 600°C, demineralized with hydrochloric acid (sample: hydrochloric acid = 1g: 20mL), filtered, washed with distilled water until neutral, and dried to obtain biochar. The dried products were weighed in mass M 1 , M 2 , M 3 , according to the carbonization rate formula:

[0024]

[0025] Calculate the carbonization rate, and the carbonization rate is the highest at 400°C, and the biochar with the highest carbonization rate is selected for the following experiments.

Embodiment 2

[0027] Preparation of AC-CTS material: Weigh 1g of chitosan, add 20mL of water (food grade water-soluble chitosan), heat and stir at 65°C until viscous, then add 8g of biochar obtained in Example 1, and continue stirring for 2h , let it stand for 12 hours, put the mixed solution in a muffle furnace for calcination at 100°C for 2h, and heat up at a rate of 5°C / min to obtain the AC-CTS material.

[0028] Preparation of AC-CTS-based camellia oil composite material: Accurately weigh 0.2g of biochar-chitosan material into a 10mL centrifuge tube, add 2g of camellia oil and mix evenly, keep the temperature in a muffle furnace at 100°C for 2h, then cool to room temperature , add a small amount of water, and shake the bed for 1 hour. After the oil-water separation is complete, carefully remove the upper oil layer, dry it in an oven at 120°C for 2 hours, take it out, weigh it after cooling, and the consumed part is the absorbed amount. Calculate the amount of tea adsorbed per gram of sam...

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Abstract

The invention belongs to the technical field of composite inorganic new materials, and specifically relates to a natural biochar-chitosan-based camellia oil composite material with slow-release performance, comprising the following raw materials in parts by weight: 1 part of water-soluble chitosan, 5 parts of biochar ‑10 parts and tea oil 60‑110 parts. The preparation method comprises: adding water-soluble chitosan into water, heating and stirring until viscous, then adding biochar, continuing to stir, and calcining to obtain biochar-chitosan material after heating program, adding the camellia oil, mixing evenly, Heating and constant temperature treatment, adding water and shaking the bed, after layering, filtering and drying the lower layer to obtain biochar-chitosan-based camellia oil composite material. The composite material of the invention has good sustained-release performance, simple preparation process, and no chemical addition and secondary pollution.

Description

technical field [0001] The invention relates to a natural biochar-chitosan-based camellia oil composite material with slow-release performance and a preparation method thereof, belonging to the technical field of new composite inorganic materials. Background technique [0002] Tea polyphenols, tea saponin and other active ingredients contained in camellia oil have antibacterial activity, and can also achieve the functions of anti-oxidation and scavenging free radicals in the body. Used in antibacterial and antioxidant fields. Biochar (AC) has good adsorption properties due to its large specific surface area, and loading antibacterial agents on biochar can delay the release of antibacterial agents and prolong the effective antibacterial time. Chitosan (CTS) molecules contain hydroxyl, acetamido and amino groups, which determines its special adsorption. Chitosan has excellent properties such as biocompatibility, degradability, non-toxicity, physiological inertness, antibacte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30
CPCB01J20/20B01J20/24B01J20/22
Inventor 凌宏有倪春林张静周家容刘维陈丛丛梁锦莹
Owner 广州美颂化妆品有限公司