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A kind of preparation method of mulberry fiber composite three-dimensional oil-water separation membrane

A technology of oil-water separation membrane and mulberry fiber, which is applied in the field of preparation of mulberry fiber composite three-dimensional oil-water separation membrane, to achieve the effects of solving resource shortage, rapid regeneration cycle, and increased polymerization degree

Active Publication Date: 2022-07-22
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the problems of cellulose composite membranes are mainly the mechanical properties, tensile stress, space contact area of ​​the membrane, etc., which need to be improved, and the degradability and environmental protection of the membrane.

Method used

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  • A kind of preparation method of mulberry fiber composite three-dimensional oil-water separation membrane
  • A kind of preparation method of mulberry fiber composite three-dimensional oil-water separation membrane
  • A kind of preparation method of mulberry fiber composite three-dimensional oil-water separation membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of ionic liquid-sodium hydroxide solution: 90 g of 1-ethyl-3-methylimidazolium diethyl phosphate salt ([EMIM][DEP]) was added to 3 g of sodium hydroxide, stirred and mixed.

[0034] Preparation of mulberry fiber: take 1 g of mulberry branch powder and add it to 20 g of ionic liquid-sodium hydroxide solution, keep stirring at 100 °C for 30 minutes, add water to wash, add 30 U / L of cellulase and laccase, and stir at 50 °C for enzymatic reaction 2h, obtain mulberry fiber;

[0035] Preparation of ionic liquid mixture: 90 g of 1-amido-3-methylimidazolium chloride ([AMIM][Cl]) and 10 g of dimethyl sulfoxide, stir and mix.

[0036] Preparation of monolayer film: Weigh 1 g of mulberry material, add 0.025 g of potassium persulfate, add 10 g of ionic liquid mixture and 0.15 g of deionized water, place in a flask, shake and mix, oil bath for 10 min, temperature is 80 ℃, Then add 0.63 g of butyl methacrylate, 0.5 g of divinyl benzene, oil bath at 70 °C for 3 hours, rem...

Embodiment 2

[0038] The difference from Example 1 is that when preparing the ionic liquid mixture, 85 g of 1-amido-3-methylimidazolium chloride and 15 g of dimethyl sulfoxide are stirred and mixed.

Embodiment 3

[0040] Preparation of bilayer membrane: Preparation of ionic liquid composite cross-linking reagent: 90 g of ionic liquid and 10 g of 0.15 (wt%) N,N-dimethylaminoethyl methacrylate.

[0041] Preparation of bacterial culture solution: take 1.2 g of glucose, 0.15 g of yeast extract, and 0.15 g of peptone, add 300 mL of distilled water, and adjust the pH of the solution to 6.5. Autoclave at 121°C for 20 minutes. Inoculate 0.5 ml of Acetobacter xylinum seed solution with an inoculation loop, and cultivate at 30° C. for 16 h to obtain a bacterial culture solution.

[0042]Take the single-layer film obtained in Example 1 or 2, and apply 1 g of the ionic liquid composite cross-linking agent on the surface of the film. UV light was used for treatment, and the treatment time was 60 s. 15ml of bacterial culture solution was added, shaken in a shaker, and incubated at 30°C for 2 days. Acetobacter xylinum could produce a bacterial cellulose membrane structure on the membrane surface, whi...

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Abstract

The invention discloses a preparation method of a mulberry fiber composite three-dimensional oil-water separation membrane, which belongs to the technical field of membranes and includes the following preparation steps: (1) preparing mulberry fiber; Enzyme partial treatment, ionic liquid mixed solution treatment; (3) Preparation of monolayer film: adding cross-linking reagent, hydrophobic reagent and initiator, drying and molding to obtain a formed hydrophobic and lipophilic monolayer film; (4) Three-dimensional multilayer film Preparation: According to application needs, the single-layer film is prepared into a multi-layer three-dimensional composite film by using an ionic liquid composite cross-linking agent. The beneficial effects of the invention are: providing a new way for the resource utilization of biomass waste. It has many advantages such as high efficiency and environmental friendliness, improves the spatial dimension and contact area of ​​the membrane, and solves the problem of poor mechanical properties during the use of the membrane.

Description

technical field [0001] The invention belongs to the technical field of membranes, and relates to a preparation method of a mulberry fiber composite three-dimensional oil-water separation membrane. Background technique [0002] After a year of growth and use, the growth of mulberry trees is messy in winter, some branches become invalid branches, and some pests and diseases also live on the tree body, and the growing small mulberry trees also need to be shaped. To solve these problems, manual pruning is required. As a renewable biomass resource, mulberry twigs are the main by-product in sericulture production. They are generally used as fuel. Because they are not treated effectively, they are burned on-site, which greatly reduces their potential value. In the mulberry cellulose crystal area, the molecules are regularly arranged and the molecular hydroxyl groups are combined with hydrogen ions inside the molecule or outside the molecule to form hydrogen bonds, making it diffic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D17/022B01D69/12
CPCB01D17/085B01D69/125
Inventor 周美李强孙惟琛季更生丁娜瞿倩倩
Owner JIANGSU UNIV OF SCI & TECH
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