Method for chemically preparing nano microcrystalline cellulose by utilizing moso bamboo
A technology of nano-crystallite and moso bamboo fiber, which is applied in the field of pulp and papermaking engineering, can solve the problems of long growth cycle, high price, insufficient supply of fiber raw materials, etc., and achieve the effect of expanding the range of raw materials and increasing economic income
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Embodiment 1
[0021] 1) Deleafing, washing and drying the moso bamboo, crushing it with a plant grinder, and filtering it through a 100-mesh sieve to obtain moso bamboo powder with a particle size less than or equal to 0.15 mm;
[0022] 2) Place the moso bamboo powder obtained in step 1) at 80°C with 4.0wt% Mg(OH) under the action of mechanical stirring 2 Reaction in the solution for 100min, moso bamboo powder and Mg(OH) 2 The solution mass ratio is 1:5, repeated 3 times, during which the residual alkali is washed with distilled water to obtain moso bamboo fiber;
[0023] 3) Using 1.5wt%Ca(ClO) 2 Under the action of mechanical stirring, the bamboo fiber obtained in step 2) was bleached at 80°C for 210 minutes, and the bamboo fiber and Ca(ClO) 2 The mass ratio of solution is 1:10, repeats 4 times, washes residual chlorine with distilled water in the meantime, obtains high-purity moso bamboo fiber;
[0024] 4) The high-purity moso bamboo fiber obtained in step 3) was placed in a 30wt% tric...
Embodiment 2
[0027] 1) Deleafing, washing and drying the moso bamboo, crushing it with a plant grinder, and filtering it through a 100-mesh sieve to obtain moso bamboo powder with a particle size less than or equal to 0.15mm;
[0028] 2) Place the moso bamboo powder obtained in step 1) at 90°C with 4.0wt% Mg(OH) under the action of mechanical stirring 2 Reaction in the solution for 90min, moso bamboo powder and Mg(OH) 2 The solution mass ratio is 1:10, repeated 3 times, during which the residual alkali is washed with distilled water to obtain moso bamboo fiber;
[0029] 3) Using 2.0wt%Ca(ClO) 2 Under the action of mechanical stirring, the bamboo fiber obtained in step 2) was bleached at 80°C for 180 minutes, and the bamboo fiber and Ca(ClO) 2 The mass ratio of solution is 1:20, repeats 4 times, washes residual chlorine with distilled water in the meantime, obtains high-purity moso bamboo fiber;
[0030] 4) The high-purity moso bamboo fiber obtained in step 3) was placed in a 50wt% benze...
Embodiment 3
[0033]1) Deleafing, washing and drying the moso bamboo, crushing it with a plant grinder, and filtering it through a 100-mesh sieve to obtain moso bamboo powder with a particle size less than or equal to 0.15mm;
[0034] 2) Place the moso bamboo powder obtained in step 1) at 70°C with 6.0wt% Mg(OH) under the action of mechanical stirring 2 Reaction in the solution for 120min, moso bamboo powder and Mg(OH) 2 The solution mass ratio is 1:10, repeated 3 times, during which the residual alkali is washed with distilled water to obtain moso bamboo fiber;
[0035] 3) Using 3.0wt%Ca(ClO) 2 Under the action of mechanical stirring, the bamboo fiber obtained in step 2) was bleached at 60°C for 150 minutes, and the bamboo fiber and Ca(ClO) 2 The mass ratio of solution is 1:20, repeats 4 times, washes residual chlorine with distilled water in the meantime, obtains high-purity moso bamboo fiber;
[0036] 4) The high-purity moso bamboo fiber obtained in step 3) was reacted in a mixed solu...
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