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Preparation method of esterified cellulose loaded MXene high-toughness film

A technology of esterifying cellulose and high toughness is applied in the field of preparation of cellulose film, which can solve the problems of complex preparation process, no economic benefit, and no wear resistance, flexibility and foldability of the film, and achieves high performance. Economic benefits, good water stability, the effect of simplifying the preparation and processing technology

Pending Publication Date: 2022-05-17
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the films prepared by the above methods do not have high wear resistance, flexibility and foldability, and excellent electrical and thermal conductivity and biodegradability, and the preparation process is relatively complicated, and does not have good economic benefits.

Method used

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  • Preparation method of esterified cellulose loaded MXene high-toughness film
  • Preparation method of esterified cellulose loaded MXene high-toughness film
  • Preparation method of esterified cellulose loaded MXene high-toughness film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of preparation method of esterified cellulose loaded MXene high tenacity film, comprises the following steps:

[0035] Step 1. Mix 1g LiF and 40mL of 36% HCl aqueous solution, then slowly add 1.5gTi 3 AlC 2 Obtain solution A, then place solution A in a water bath at 45°C and continue to stir for 24 hours, and finally use a centrifuge with a speed of 3500r / min for centrifugation, and wash with deionized water to obtain an MXene suspension with a pH value of 6 Liquid B;

[0036] Step 2. Soak the poplar wood powder in 80mg / mL NaOH solution and stir at 100°C for 8h. After separation, the treated poplar wood powder is obtained, and then 14g of choline chloride, 12g of oxalic acid and 2g of the treated poplar wood powder are Mix wood flour and stir at 110°C for 3 hours until a viscous liquid D is formed, and finally add deionized water to the viscous liquid D at a volume ratio of 1:10 to obtain a mixed solution E;

[0037] Step 3. Add 2g sodium chlorite and 1mL acet...

Embodiment 2

[0040] A kind of preparation method of esterified cellulose loaded MXene high tenacity film, comprises the following steps:

[0041] Step 1. Mix 1g LiF and 40mL of 36% HCl aqueous solution, then slowly add 1gTi 3 AlC 2 Obtain solution A, then place solution A in a water bath at 45°C and continue to stir for 24 hours, and finally use a centrifuge with a rotation speed of 4000r / min for centrifugation, and wash with deionized water to obtain an MXene suspension with a pH value of 7 Liquid B;

[0042] Step 2, soak the poplar wood powder in the NaOH solution of 100mg / mL and stir at 100°C for 6 hours, obtain the treated poplar wood powder after separation, then mix 14g of choline chloride, 26g of oxalic acid and 4g of the treated poplar wood powder Mix poplar wood powder and stir at 100°C for 4 hours until a viscous liquid D is formed, and finally add deionized water to the viscous liquid D at a volume ratio of 1:12 to obtain a mixed solution E;

[0043] Step 3. Add 2g sodium chl...

Embodiment 3

[0046] A kind of preparation method of esterified cellulose loaded MXene high tenacity film, comprises the following steps:

[0047] Step 1. Mix 2g LiF and 40mL of 36% HCl aqueous solution, then slowly add 2gTi 3 AlC 2 Obtain solution A, then place solution A in a water bath at 45°C and continue to stir for 24 hours, and finally use a centrifuge with a speed of 4000r / min for centrifugation, and wash with deionized water to obtain an MXene suspension with a pH value of 6 Liquid B;

[0048] Step 2. Soak the poplar wood powder in 90mg / mL NaOH solution and stir it at 100°C for 7 hours. After separation, the treated poplar wood powder is obtained, and then 14g of choline chloride, 20g of oxalic acid and 2.8g of oxalic acid are treated. Mix poplar wood powder and stir at 120°C for 5 hours until a viscous liquid D is formed, and finally add deionized water to the viscous liquid D at a volume ratio of 1:13 to obtain a mixed solution E;

[0049] Step 3. Add 3g sodium chlorite and 1m...

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Abstract

The invention discloses a preparation method of an esterified cellulose loaded MXene high-toughness film, which comprises the following steps: 1, mixing LiF, HCl and Ti3AlC2 in proportion, stirring in a water bath, separating and washing to obtain an MXene suspension; 2, poplar powder is soaked in NaOH, heated, stirred and separated, treated poplar powder is obtained, choline chloride and oxalic acid are mixed according to the molar ratio to obtain a mixture, the treated poplar powder and the mixture are mixed according to the mass ratio, heated and stirred till viscous liquid is formed, and water is added to obtain a mixed solution; 3, adding sodium chlorite and acetic acid into the mixed solution in proportion, heating and stirring to milk white, filtering and washing to obtain esterified cellulose, and preparing the esterified cellulose into slurry; and 4, filtering and drying an MXene suspension to prepare a suspension F, adding the suspension F into the slurry to obtain a suspension G, carrying out dispersion treatment on the suspension G to obtain an esterified cellulose loaded MXene resin matrix, and preparing the esterified cellulose loaded MXene resin matrix into the film, the preparation process is simple, and the film has good wear resistance and water stability.

Description

technical field [0001] The invention relates to the preparation of a cellulose film, in particular to a preparation method of an esterified cellulose-loaded MXene high-toughness film. Background technique [0002] The technology of extracting cellulose from natural biomass raw materials has been widely studied and applied. It is still a task worth exploring to explore and develop the application potential of cellulose films and improve the performance of cellulose films. As one of the effective renewable resources, processing waste poplar wood flour has great development potential and can be used to manufacture sustainable polymers. The DES co-solvent composed of choline chloride and oxalic acid can dissolve lignin and hemicellulose, thereby exposing the cellulose coated by the two, due to the protonation of hydrogen ions in the DES co-solvent, it can make some The hydroxyl groups of the cellulose chain segments are esterified, which improves the hydrogen bonding sites betw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L1/12C08K9/02C08K3/14C08J5/18
CPCC08J5/18C08J2301/12C08K9/02C08K3/14Y02W30/62
Inventor 贾晓华陕志强宋浩杰杨进邵丹王思哲李永冯雷
Owner SHAANXI UNIV OF SCI & TECH
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