Preparation method of uronic acidified flame-retardant viscose fibers grafted with guanylic acid and flame-retardant viscose fibers
A technology of flame-retardant viscose fiber and viscose fiber, which is applied in the direction of flame-retardant fiber, fiber treatment, plant fiber, etc., can solve the problem of mechanical property decline, achieve good coloring ability, low flame retardant ratio, limit The effect of high oxygen index
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Embodiment 1
[0041] The preparation method of the glucuronidated flame-retardant viscose fiber grafted with guanylic acid:
[0042] 100 grams of viscose fiber, first disperse with 50 times the volume of pure water, then adjust the pH to 7.5 with a 5% sodium hydroxide solution, then add sodium hypochlorite with 1% viscose mass, and control the temperature between 30°C During the reaction for 8 hours, the glucuronated viscose fiber was prepared. After the reaction is completed, filter, wash the filter cake repeatedly with pure water to neutrality, dry it in a centrifuge and set it aside.
[0043] Dissolve 30 grams of guanylic acid with purified water to prepare a 5% aqueous solution of guanylic acid, disperse the above-mentioned glucuronated viscose fiber in it, add water-soluble 1-(3-dimethylaminopropyl) - 3-Ethylcarbodiimide (EDC) 15ml. Control pH 4.5, temperature 45 DEG C, react for 5 hours, just synthesize the glucuronidated flame-retardant viscose fiber grafted with guanylic acid. Th...
Embodiment 2
[0045] The preparation method of the glucuronidated flame-retardant viscose fiber grafted with guanylic acid:
[0046] 100 grams of viscose fiber, first disperse with 60 times the volume of pure water, then adjust the pH to 8 with 5% sodium hydroxide, then add sodium hypochlorite with 3% of the mass of viscose fiber, and react at 60 ° C for 4 hours , to prepare glucuronated viscose fiber. After the reaction is completed, filter, wash the filter cake repeatedly with pure water to neutrality, and dry it in a centrifuge for subsequent use.
[0047] 60 grams of guanylic acid were dissolved in purified water to prepare a 10% aqueous solution of guanylic acid, in which the above-mentioned glucuronated viscose fibers were dispersed, and water-soluble 1-(3-dimethylaminopropyl)- 30ml of 3-ethylcarbodiimide (EDC). Control pH 5, temperature 60 ℃, react for 2 hours, just synthesize the glucuronidated flame-retardant viscose fiber grafted with guanylic acid. The graft rate is 9.8%, and ...
Embodiment 3
[0049] The preparation method of the glucuronidated flame-retardant viscose fiber grafted with guanylic acid:
[0050] 100 grams of viscose fibers are first dispersed with 80 times the volume of pure water, then the pH is adjusted to 9.5 with mass concentration 5% sodium hydroxide, then sodium hypochlorite is added with 5% viscose quality, and reacted for 6 hours at 50°C to prepare It is produced from glucuronated viscose fiber. After the reaction is completed, filter, wash the filter cake repeatedly with pure water to neutrality, dry it in a centrifuge and set aside.
[0051] 40 grams of guanylic acid were dissolved in purified water to prepare a 8% aqueous solution of guanylic acid, in which the above-mentioned uronic acidified viscose fibers were dispersed, and water-soluble 1-(3-dimethylaminopropyl)- 20ml of 3-ethylcarbodiimide (EDC). Control pH 6.5, temperature 50 ℃, react for 4 hours, just synthesize the glucuronidation flame-retardant viscose fiber grafted with guanyl...
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