Preparation method of chitosan/cellulose homogeneous spinning solution
A technology of spinning stock solution and chitosan, which is applied in the direction of spinning solution preparation, cellulose/protein conjugated artificial filament, fiber chemical characteristics, etc., can solve the problems of difficult mixing evenly, easy generation of bubbles, long time, etc. Achieve the effects of simple process route, continuous processing and cost saving
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Embodiment 1
[0034] 1. Add 3g of chitosan (with an average viscosity of 1.1 million) to 315g of 1-ethyl-3-methylimidazole acetate ([EMIM]Ac) ionic liquid, mix well, seal well, and swell at room temperature 4 hours;
[0035] 2. Add 32 g of bamboo pulp cellulose (polymerization degree of 500), knead and mix uniformly, add to the dissolving kettle, seal it, vacuum to 0.1-0.5 atmospheres, and further mix and swell for 12 hours;
[0036] 3. Turn on the stirring, the stirring speed is 30 rpm, set the heating rate to 5°C / 5min, rise from room temperature to 95°C, after reaching the set value, stop heating, and perform constant temperature dissolution and heat preservation at this temperature After dissolving for 6 hours, a sample was observed under a polarizing microscope to obtain a uniform black field of view to obtain a homogeneous cellulose / chitosan ionic liquid spinning dope.
Embodiment 2
[0038] 1. Add 3.5g of chitosan (viscosity average mass fraction of 390,000) to 315g of 1-butyl-3-methylimidazole acetate ([BMIM]Ac) ionic liquid, mix well, seal well, and at room temperature Swelling for 4 hours;
[0039] 2. Add 31.5g of hemp pulp cellulose (polymerization degree 600), knead and mix uniformly, add it to the dissolving kettle, seal it well, vacuum to 0.1-0.5 atmospheres, and further mix and swell for 12 hours;
[0040] 3. Turn on the stirring, the stirring speed is 90 rpm, set the heating rate to 5°C / 5min, rise from room temperature to 90°C, after reaching the set value, stop heating, perform constant temperature dissolution at this temperature and keep warm After 4 hours of dissolution, a sample was taken and observed under a polarizing microscope to obtain a uniform black field of view to obtain a homogeneous cellulose / chitosan ionic liquid spinning dope. Example 3
Embodiment 3
[0041] 1. Add 3g of chitosan (with an average viscosity of 150,000) into 315g of 1-allyl-3-methylimidazole chloride ([AMIM]Cl) ionic liquid, mix well, seal well, and swell at room temperature 4 hours;
[0042] 2. Add 32 g of bagasse pulp cellulose (polymerization degree 500), knead and mix uniformly, add it to the dissolving kettle, seal it well, vacuum to 0.1-0.5 atmospheres, and further mix and swell for 12 hours;
[0043] 3. Turn on the stirring, the stirring speed is 120 revolutions / min, set the heating rate 5℃ / 5min, increase from room temperature to 95℃, after reaching the set value, stop heating, perform constant temperature dissolution at this temperature, and dissolve 4 After hours, a sample was taken and observed under a polarizing microscope to obtain a uniform black field of view to obtain a homogeneous cellulose / chitosan ionic liquid spinning stock solution.
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