Nanometer cellulose fiber and reinforced composite material with same
A technology of nanocellulose and composite materials, which is applied in the field of new fiber composite materials, can solve problems such as the difficulty in preparing nanocellulose fibers, and achieve the effects of changing mechanical strength, easy removal of solvents, and uniform thickness
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Embodiment 1
[0032] Prepare a mixed solution of acetone and DMAc with a mass ratio of 2:1, place CA powder with a molecular weight of 30,000 in the mixed solution (the mass fraction of CA is 20%), stir it with a magnetic stirrer at room temperature to completely dissolve it, and prepare CA Electrospinning solution. The clear and transparent CA spinning solution was injected into the electrospinning machine and subjected to defoaming treatment to remove the air bubbles in the spinning solution, and the preparation of nano-CA fibers was started after the bubbles were completely eliminated. The electrospinning process is as follows: the spinning distance between the needle and the receiving screen is 15cm, the flow rate of the spinning solution is 0.2mL / h, and the spinning voltage is 11kV. The prepared nano-CA fiber mat is taken off from the receiving screen, and dried at room temperature for use. The microstructure of the as-prepared nano-CA fibers is as follows: figure 1 As shown, it can ...
Embodiment 2
[0036] Prepare a mixed solution of acetone and DMAc with a mass ratio of 2:1, place CA powder with a molecular weight of 30,000 in the mixed solution (the mass fraction of CA is 25%), stir it with a magnetic stirrer at room temperature to completely dissolve it, and prepare CA Electrospinning solution. The clear and transparent CA spinning solution was injected into the electrospinning machine and subjected to defoaming treatment to remove the air bubbles in the spinning solution, and the preparation of nano-CA fibers was started after the bubbles were completely eliminated. The electrospinning process is as follows: the spinning distance between the needle and the receiving screen is 13 cm, the flow rate of the spinning solution is 0.1 mL / h, and the spinning voltage is 10 kV. The prepared nano-CA fiber mat is taken off from the receiving screen, and dried at room temperature for use. The microstructure of the as-prepared nano-CA fibers is as follows: figure 1 As shown, it c...
Embodiment 3
[0040] Prepare a mixed solution of acetone and DMAc with a mass ratio of 2:1, place CA powder with a molecular weight of 30,000 in the mixed solution (the mass fraction of CA is 15%), stir it with a magnetic stirrer at room temperature to completely dissolve it, and prepare CA Electrospinning solution. The clear and transparent CA spinning solution was injected into the electrospinning machine and subjected to defoaming treatment to remove the air bubbles in the spinning solution, and the preparation of nano-CA fibers was started after the bubbles were completely eliminated. The electrospinning process is as follows: the spinning distance between the needle and the receiving screen is 17cm, the flow rate of spinning solution is 0.3mL / h, and the spinning voltage is 13kV. The prepared nano-CA fiber mat is taken off from the receiving screen, and dried at room temperature for use. The microstructure of the as-prepared nano-CA fibers is as follows: figure 1 As shown, it can be s...
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