Graphene/bacterial cellulose composite material with gradient structure and preparation method thereof

A technology of bacterial cellulose and composite materials, applied in the direction of microorganism-based methods, biochemical equipment and methods, microorganisms, etc., can solve the problems of single structure and inability to prepare graphene composite materials with gradient structure, and achieve simple preparation process , inhibition of graphene agglomeration, process safety effect
CN109097420AActive Publication Date: 2018-12-28EAST CHINA JIAOTONG UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
EAST CHINA JIAOTONG UNIVERSITY
Publication Date
2018-12-28

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Abstract

The invention discloses a preparation method of a graphene / bacterial cellulose composite material with a gradient structure. A membrane liquid interface culture method is adopted. The preparation method mainly comprises preparing a culture medium and preparing a base membrane for culturing graphene / bacterial cellulose as a membrane liquid interface; preparing mixed media of graphene / nonvaccinatedmedia in various volume ratios (concentrations); spraying the mixed media of the grapheme in different concentrations in the mist form to the base membrane for multiple times according to the change of the concentration of the graphene in the mixed media from low to high based on the spraying sequence to achieve membrane and liquid contact. The next spraying is conducted each time after the mixedmedia on the membrane surface are consumed, so that the grapheme / bacterial cellulose composite material with the ratio of the graphene and the bacterial cellulose in the gradient change in the thickness direction is formed. The composite material can provide materials for preparing novel advanced materials such as biomimetic biomaterials, electromagnetic gradient materials and conductive gradientfunctional materials.
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Description

technical field

[0001] The invention relates to a graphene / bacterial cellulose composite material with a gradient structure and a preparation method thereof. Background technique

[0002] During long-term evolution and selection, organisms have subtly evolved functional gradients and heterogeneity under the conditions of rather limited elements and compounds to choose from, thus creating high-performance biomaterials. Gradients play an integral role in the survival and development of organisms. For example, natural (bio)materials are often composites with spatial gradients and tunable properties. Natural (bio)materials utilize their gradients to enhance a range of properties and functions, including load-bearing and support capabilities, interfacial strengthening, toughening, and non-mechanical functions. Inspired by biological materials in nature, it is recognized that the introduction of spatial gradients can effectively improve the mechanical and functional properties o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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