Preparation method of nanocellulose ammonia gas induction aerogel
A technology of nano-cellulose and airgel, which is applied in the direction of analyzing materials through chemical reactions, observing the influence of chemical indicators on materials, instruments, etc., to achieve low density, high porosity, and high specific surface area Effect
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[0048] The present embodiment provides a preparation method of nanocellulose ammonia gas induction aerogel with high specific surface area, comprising the following steps:
[0049] (1) Using eucalyptus wood bleached kraft pulp as raw material, nanocellulose was prepared by TEMPO-mediated oxidation method
[0050] 1) Weigh a certain amount of eucalyptus bleached kraft pulp, soak it in deionized water and stir it with a mixer for 2-3 hours to completely disperse it, then wash the fibers with deionized water for 2-3 times, and place the fibers in deionized water after suction filtration. A certain proportion of 0.5mol / L Na 2 CO 3 / NaHCO 3 A slurry with a pulp concentration of 1% was prepared from a mixed solution of a buffer solution and deionized water, and the slurry was put into a three-necked flask and stirred.
[0051]2) Weigh 1% of TEMPO and 10% of NaBr equivalent to the absolute dry pulp sample mass, put them in a beaker and add an appropriate amount of deionized water,...
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