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A method of utilizing natural melanin to synthesize organic-inorganic composite materials

An inorganic composite material and natural melanin technology, applied in the field of composite material preparation, can solve the problems of organic-inorganic composite materials that have not yet been seen, and achieve the effects of industrial production, mild reaction process, and simple reaction system

Active Publication Date: 2018-09-04
SOUTHWEST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no method for preparing organic-inorganic composite materials from natural melanin in the prior art so far.

Method used

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  • A method of utilizing natural melanin to synthesize organic-inorganic composite materials

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Effect test

Embodiment 1

[0025] like figure 1 As shown, take 10 g of chestnut shell pigment into a reactor with a volume of 1000 mL, add 200 mL of ammonia solution with a concentration of 0.1 mol / L to fully dissolve the melanin, and then add 1 g of amino-bonded silica gel to react at room temperature for 7 After a few days, it was filtered, and the filter residue was washed with water until the eluate was colorless. The filter residue after washing with water was dried at 120° C. for 2 hours to obtain the natural melanin-silica gel composite material.

Embodiment 2

[0027] Same as Example 1, replace 10 g of chestnut shell pigment with 2 g black fungus, and use 0.1 mol / L NaOH solution instead of 0.1 mol / L ammonia solution.

Embodiment 3

[0029] like figure 1 As shown, 0.5 g of chestnut shell pigment was put into a reactor with a volume of 500 mL, and 200 mL of NaOH aqueous solution with a concentration of 0.1 mol / L was added to fully dissolve the pigment. The pH of the chestnut shell pigment solution was adjusted to 4 with HCl, then 50 g of amino-bonded silica gel was added, reacted at 80°C for 3 days, and then filtered, and the filter residue was washed with water until the eluate was colorless. The filter residue after washing with water was dried at 100° C. for 4 hours to obtain the natural melanin-silica gel composite material.

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Abstract

The invention belongs to the technical field of composite material preparation methods, and particularly relates to a method for synthesizing an organic-inorganic composite material by means of natural melanin. The method comprises the steps that a functionalized inorganic material is added into a natural melanin solution or an acylating chlorination melanin solution, a bonding reaction is conducted for 6 hours to 7 days at the temperature ranging from room temperature to 120 DEG C, then an organic-inorganic composite material is separated from a reaction system through centrifuging or filtering, and further washing and drying are conducted to obtain the final product. The organic-inorganic composite material prepared through the method is wide in organic component source, good in environmental compatibility and high in sustainability; inorganic components can be in the forms of powder, filaments, meshes, sheets, blocks and the like, can be conventional materials, also can be a nano-material and are wide in application range; the reaction system is simple, the reaction process is mild, stable, low in consumption and beneficial for industrialized production; the obtained product can be applied to the fields of biochemical engineering, medicine, buildings, environmental protection and the like.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation methods, and in particular relates to a method for synthesizing organic-inorganic composite materials using natural melanin. Background technique [0002] Materials are the foundation and forerunner of the development of modern science and technology. Composite materials are materials with new properties formed by combining two or more materials with different properties through physical or chemical methods. Organic-inorganic composite materials are a type of composite materials formed by combining organic components and inorganic components. In this type of composite material, the organic and inorganic components learn from each other's strengths and complement each other's strengths, and produce synergistic effects, so that the comprehensive performance of the composite material is better than that of the original constituent materials to meet various requirements. Organ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L101/00C08K9/04C08K3/36C08K3/34
Inventor 姚增玉苏萍戚建华王瑛张雪春王振兴
Owner SOUTHWEST FORESTRY UNIVERSITY
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