A model for determining the diffusivity of dyestuffs in colorants
A diffusion and color paste technology, applied in the direction of measuring devices, analytical materials, instruments, etc., can solve the problems of lack of experimental models or means, and achieve the effects of good reproducibility of results, accurate measurement, and safe and reliable experiments
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Embodiment 1
[0035] Weigh 6g of sodium alginate paste, and slowly add 94ml of deionized water under stirring conditions to prepare a puree with a solid content of 6% for later use. Then take the above density as 1.73g·ml -1 , a volume of 7.5ml of the original slurry, and add the dissolved acid lake blue A dye 0.03g, stir evenly, the obtained dye concentration is 4g L -1 The color paste is spare.
[0036] See attached figure 1, take 1.3g of sodium alginate puree and put it in a transparent cylindrical container 1 whose specifications are r=0.0068m, l=0.05m, then let it stand for 2 hours, and fully remove the residual air bubbles in the puree, so that the cylindrical container 1 The upper surface of the middle raw pulp is smooth. Take 0.2 g of the above-mentioned color paste, apply it evenly to the upper end surface of the original paste in the cylindrical container 1, and then place the cylindrical container 1 containing the color paste and the original paste in the constant temperature ...
Embodiment 2
[0044] According to the method in Example 1, the diffusion performance of Acid Lagoon A in sodium alginate slurry at 95°C was measured. The diffusion time is 7.2×10 3 s, other experimental conditions and steps are the same as in Example 1.
[0045] Under the above conditions, the experimental measurement of the diffusion rate of Acid Lagoon A in sodium alginate slurry at 95°C is 5.57×10 -8 mol / (m 2 s).
Embodiment 3
[0047] Weigh 6g of sodium alginate paste, slowly add 94ml of deionized water under stirring conditions to obtain a blank slurry with a solid content of 6%, then take 99g of the blank slurry, add 1g of glycerin, and stir evenly to obtain a glycerol concentration of 1.41 ×10 -7 mol L -1 The puree is set aside. Then take 13g of the above-mentioned puree, add 0.03g of acid lake blue A dye, and stir evenly to obtain a dye concentration of 5.79×10 -3 mol L -1 , The concentration of glycerol in the auxiliary agent is 1.41×10 -7 mol L -1 The color paste is spare.
[0048] According to the method in Example 1, it is determined that Acid Lagoon A is 1.41×10 at 90° C. and the concentration of auxiliary glycerin. -7 mol L -1 Diffusion properties of sodium alginate slurries. Other experimental conditions and steps are the same as in Example 1.
[0049] The experimental results show that Acid Lagoon A has a concentration of 1.41×10 glycerol at 90°C. -7 mol L -1 , the diffusion ti...
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