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Synthesis method of cellulose carbonate material and application of cellulose carbonate material

A synthesis method and technology of cellulose, applied in the direction of additive processing, etc., can solve the problems of high price of ionic liquid, limited economic performance, high cost of recovery, purification, and recycling.

Active Publication Date: 2021-03-16
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the ionic liquid is expensive, the cost of recovery, purification, and recycling is high, and excessive carbonate reagents need to be used, which greatly limits the economic performance of the process.

Method used

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  • Synthesis method of cellulose carbonate material and application of cellulose carbonate material
  • Synthesis method of cellulose carbonate material and application of cellulose carbonate material
  • Synthesis method of cellulose carbonate material and application of cellulose carbonate material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0154] Embodiment 1: a kind of synthetic method of cellulose carbonate material, comprises the steps:

[0155] 1) The cellulose content is 30%, the structural formula is Wherein x=50 microcrystalline cellulose, structural formula is The organic base and dimethyl sulfoxide are mixed to obtain product A, wherein the mass concentration of cellulose is 2%, and the mass concentration of dimethyl sulfoxide is 0.5%;

[0156] 2) Put product A into a closed environment and fill it with carbon dioxide, so that the pressure in the closed environment is 0.1MPa, and then react at 30°C for 24 hours to generate cellulose-based CO 2 Reversible ionic liquid compound, product B;

[0157] 3) Add cellulose-based CO to product B 2 The molecular formula of the reversible ionic liquid compound with a molar ratio of 0.1:1 is IC 10 h 21 Saturated halogenated alkanes, at 0.1MPa CO 2 atmosphere, 10 oC Down reaction 48 hours, obtain C product;

[0158] 4) Add water with a volume ratio of 0.5:1 ...

Embodiment 2

[0160] Embodiment 2: a kind of synthetic method of cellulose carbonate material, comprises the steps:

[0161] 1) The cellulose content is 50%, the structural formula is Wherein the plant cellulose isolated in the cotton of x=400, structural formula is where R 1 is an alkyl group with 5 carbon atoms, R 2 , R 3 , R 4 The organic base that is methyl is mixed with tetramethylurea to obtain product A, wherein the mass concentration of cellulose is 7%, and the mass concentration of tetramethylurea is 15%;

[0162] 2) Put product A into a closed environment and fill it with carbon dioxide, so that the pressure in the closed environment is 3MPa, and then react at 50°C for 19h to generate cellulose-based CO 2 Reversible ionic liquid compound, product B;

[0163] 3) Add cellulose-based CO to product B 2 The structural formula of the reversible ionic liquid compound with a molar ratio of 0.5:1 is , where: X=Cl, R is a proton halogenated compound, CO at 3 MPa 2 atmosphere, 30...

Embodiment 3

[0166] Embodiment 3: a kind of synthetic method of cellulose carbonate material, comprises the steps:

[0167] 1) The cellulose content is 70%, the structural formula is Wherein the plant cellulose separated in the bamboo pulp of x=800, structural formula is The organic base and N,N-diethylacetamide are mixed to obtain product A, wherein the mass concentration of cellulose is 15%, and the mass concentration of N,N-diethylacetamide is 30%;

[0168] 2) Put product A into a closed environment and fill it with carbon dioxide, so that the pressure in the closed environment is 5MPa, and then react at 60°C for 12 hours to generate cellulose-based CO 2 Reversible ionic liquid compound, product B;

[0169] 3) Add cellulose-based CO to product B 2 The structural formula of the reversible ionic liquid compound with a molar ratio of 1:1 is , where: X=Br; R is a n-propyl halogenated compound, in 6MPa of CO 2 atmosphere, 70 oC Down reaction 25 hours, obtain C product;

[0170] 4) Ad...

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Abstract

The invention discloses a synthesis method of a cellulose-carbonic ester material and application of the cellulose-carbonic ester material. The synthesis method comprises the following steps: 1) mixing a cellulose raw material, organic alkali and an organic solvent, so as to obtain a product A; 2) putting the product A into a closed environment and charging carbon dioxide into the closed environment, so that the pressure in the closed environment is 0.1-10 MPa; then, performing a reaction at the temperature of 30-100 DEG C for 0.1-24 h to generate a cellulose-based CO2 reversible ionic liquidcompound, so as to obtain a product B; 3) adding a halogenated compound into the product B for a reaction at the temperature of 10-100 DEG C under the CO2 atmosphere with the pressure of 0.1-10 MPa for 0.1-48 h, so as to obtain a product C, wherein the molar ratio of the halogenated compound to the cellulose-based CO2 reversible ionic liquid compound is (0.1-2):1; 4) adding water or C1-C3 low-level fatty alcohol into the product C, and filtering, so as to obtain a solid product D; 5) washing the product D with water or C1-C3 low-level fatty alcohol, purifying and drying, so as to obtain the cellulose-carbonic ester material. The synthesis method has the characteristics of being novel in material structure, adjustable in property and functionality, novel in method, simple in process, low inproduction cost, convenient in operation and recyclable in solvent.

Description

technical field [0001] The invention relates to a synthesis method of a cellulose carbonate material and an application of the cellulose carbonate material, belonging to the field of new chemical materials. Background technique [0002] With the increasing shortage of non-renewable resources such as coal, oil, and natural gas and due to CO 2 Climate warming caused by emissions and accumulation, biorenewable biomass resources and CO 2 The utilization of resources is a hot research topic nowadays. Cellulose is the most widely distributed and abundant biomass resource and material in nature. Cellulose is a complex polysaccharide with 8,000 to 10,000 glucose residues linked by β-1,4-glycosidic bonds. Cellulose derivatives are the earliest natural polymer materials developed by humans. Cellulose and cellulose-derived materials have the characteristics of biodegradability and bioabsorbability, and people's development and application of it are emerging in an endless stream. B...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B15/00C08L1/08B33Y70/00
CPCB33Y70/00C08B15/00C08L1/08C08L2203/12C08L2203/16C08L2203/20C08L2203/204
Inventor 谢海波杜杰毫蔡龙金隆明
Owner GUIZHOU UNIV
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