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Preparation method of nano-zinc oxide cellulose sponge material

A technology of nano-zinc oxide and cellulose sponge, which is applied in chemical instruments and methods, and other chemical processes, can solve the problems of increasing fiber surface roughness, poor recyclability, and difficult to achieve rapid environmental governance, and achieve easy degradation , easy regeneration effect

Inactive Publication Date: 2016-09-21
郭舒洋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problems mainly solved by the present invention: in view of the current oil-absorbing materials in the process of use, the regeneration is difficult, the recyclability and biodegradability are poor, and it is difficult to meet the requirements of rapid environmental control in the process of spillover accident treatment. At the same time, it is possible To solve the problem of secondary pollution, a preparation method of nano-zinc oxide cellulose sponge material is provided. The present invention uses hemp stalk fiber as raw material, firstly treats the fiber with NaOH solution to swell the fiber, increases the surface roughness of the fiber, and then utilizes saturated water Steam pressurization further splits the cellulose into smaller fibers, and then reacts with N,N'-carbonyldiimidazole to generate highly active cellulose with imidazole rings, and then adds KH-550 silane coupling agent, The nano-zinc oxide generated by the reaction is grafted on the surface of high-activity cellulose, and then the absorbent cotton is used as the reinforcing fiber, sodium sulfate is used as the pore-forming agent, and NaOH / thiourea solution is used as the solvent. Nano Zinc Oxide Cellulose Sponge

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] Weigh 80g of hemp stalk fiber, put it in 180mL of 10% NaOH solution, soak it for 1h, wash it with deionized water for 3 times, then transfer it to the reaction kettle, start the stirrer, and set the speed at 600r / min , feed saturated steam into the reactor until the pressure in the reactor reaches 1.5 MPa, and keep the pressure for 20 minutes, transfer the material in the reactor to an oven at 105°C, and dry to constant weight to obtain dry alkaline cellulose; Weigh 30g of the above-mentioned basic cellulose dry material and 20g of N,N'-carbonyldiimidazole respectively, add them into a three-neck flask with a stirrer containing 30mL of toluene and 20mL of dimethyl fumarate, and place it at 55 ℃ in a constant temperature water bath, start the agitator, stir at a constant temperature of 500r / min for 3 hours, filter with suction, wash the filter cake with deionized water for 3 times, transfer the filter cake to a 90 ℃ oven, and dry for 3 hours to obtain active cellulose. ;...

example 2

[0024] Weigh 90g of hemp stalk fiber, place it in 190mL of 12% NaOH solution, soak it for 2 hours, wash it with deionized water for 4 times, then transfer it to the reaction kettle, start the stirrer, and set the speed at 700r / min , feed saturated water vapor into the reactor until the pressure in the reactor reaches 1.6 MPa, and keep the pressure for 25 minutes, transfer the material in the reactor to an oven at 108°C, and dry to constant weight to obtain dry alkaline cellulose; Weigh 40g of the above-mentioned basic cellulose dry material and 30g of N,N'-carbonyldiimidazole respectively, add them into a three-necked flask with a stirrer containing 34mL of toluene and 22mL of dimethyl fumarate, and place them in a 65 ℃ in a constant temperature water bath, start the agitator, stir at a constant temperature of 600r / min for 4h, filter with suction, wash the filter cake 4 times with deionized water, transfer the filter cake to an oven at 100°C, and dry for 4h to obtain active cel...

example 3

[0027] Weigh 100g of hemp stalk fiber, place it in 200mL of 15% NaOH solution, soak it for 3 hours, wash it with deionized water for 5 times, then transfer it to the reaction kettle, start the stirrer, and set the speed at 800r / min , feed saturated steam into the reaction kettle until the pressure in the reaction kettle reaches 1.8MPa, and after maintaining the pressure for 30 minutes, transfer the material in the reaction kettle to an oven at 110°C, and dry to constant weight to obtain dry alkaline cellulose; Weigh 50g of the above-mentioned basic cellulose dry material and 40g of N,N'-carbonyldiimidazole respectively, add them into a three-necked flask with a stirrer containing 36mL of toluene and 24mL of dimethyl fumarate, and place it at 75 ℃ in a constant temperature water bath, start the agitator, stir at a constant temperature of 700r / min for 5h, filter with suction, wash the filter cake with deionized water for 5 times, transfer the filter cake to an oven at 105°C, and ...

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Abstract

Belonging to the field of nano-material synthesis, the invention discloses a preparation method of a nano-zinc oxide cellulose sponge material. The method includes: adopting hemp stem fiber as the raw material, using a NaOH solution to swell the fiber, then using saturated steam pressurization to split cellulose into smaller fibers, then reacting N, N'-carbonyldiimidazole with cellulose to generate high activity cellulose, adding a KH-550 silane coupling agent to graft nano-zinc oxide to a high activity cellulose surface, then using absorbent cotton as the reinforcing fiber, taking sodium sulfate as the pore-forming agent, and using a NaOH / thiourea solution as the solvent, and carrying out die molding to prepare a nano-zinc oxide cellulose sponge material under low temperature and dry conditions. The obtained nano-zinc oxide cellulose sponge material has a sponge porous structure, the cellulose composing the sponge structure is easily degradable and does not cause secondary pollution, also the complex nano-zinc oxide bulge structure on the surface can realize reversible conversion of surface super-hydrophobicity and super-hydrophilicity, thus realizing adsorption and removal of oil.

Description

technical field [0001] The invention discloses a preparation method of a nano zinc oxide cellulose sponge material, which belongs to the field of nano material synthesis. Background technique [0002] In recent years, with the rapid development of the petroleum industry and offshore petroleum transportation, marine crude oil leakage caused by blowouts and shipwrecks is a relatively common and difficult pollution problem in environmental pollution. Oil-absorbing material is a very effective marine oil spill treatment method, which has the advantages of high efficiency, economy and easy oil recovery, and is widely used in emergency treatment of marine oil spill pollution accidents. [0003] At present, there are mainly the following types of oil-absorbing materials: natural inorganic oil-absorbing materials, natural organic oil-absorbing materials and chemically synthesized oil-absorbing materials. Common natural inorganic oil-absorbing materials include activated carbon, zeol...

Claims

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Application Information

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IPC IPC(8): C08L1/08C08L1/02C08K3/22C08B15/06C08J9/28C09K3/32
CPCC08L1/08C08B15/06C08J9/28C08J2301/08C08J2401/02C08K2201/011C08L2205/02C09K3/32
Inventor 郭舒洋许博伟
Owner 郭舒洋
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