Blue-violet natural dye color matching dyeing method based on natural eutectic solvent and microwave extraction technology
A technology of deep eutectic solvent and natural dyes, applied in the field of dyeing, can solve problems such as low color fastness and single color
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Embodiment 1
[0039] A kind of blue-violet natural dye color matching dyeing method based on natural deep eutectic solvent and microwave extraction technology, comprises the following steps:
[0040] 1) Mix lactic acid, glucose, ethanol and deionized water evenly in a molar ratio of 1.1:0.9:1:2, stir in a water bath at 60°C for 6 hours to prepare natural deep eutectic solvent C1;
[0041] 2) The mixture of natural dye plants comfrey, pagoda indigo, and Polygonum indigo with a mass ratio of 4:1.2:1.8 was dried at 40°C for 18 hours, put into a traditional Chinese medicine powder machine and crushed into powder, and screened with a vibrating sieve for 20 minutes to obtain the particle size Natural dye plant dry powder E1 of about 0.5mm;
[0042] 3) Mix 68mL of the natural deep eutectic solvent C1 obtained in step 1) and 4g of the natural dye plant dry powder E1 obtained in step 2) into a flask, extract in a microwave extractor, extraction power is 550W, extraction time is 12min, and cooled Su...
Embodiment 2
[0045] A kind of blue-violet natural dye color matching dyeing method based on natural deep eutectic solvent and microwave extraction technology, comprises the following steps:
[0046] 1) Mix betaine, glycerin, ethanol and deionized water in a molar ratio of 0.9:1.1:0.5:2, and stir in a water bath at 65°C for 4 hours to prepare the natural deep eutectic solvent C2;
[0047]2) The mixture of natural dye plants comfrey, pagoda indigo, and Polygonum indigo with a mass ratio of 4:1.7:1.3 was dried at 50°C for 12 hours, put into a traditional Chinese medicine powder machine and crushed into powder, and screened with a vibrating sieve for 16 minutes to obtain the particle size About 1mm natural dye plant dry powder E2;
[0048] 3) Mix 70mL of the natural deep eutectic solvent C2 obtained in step 1) with 4g of the natural dye plant dry powder E2 obtained in step 2) into a flask and extract in a microwave extractor with an extraction power of 650W and an extraction time of 10 minutes...
Embodiment 3
[0051] A kind of blue-violet natural dye color matching dyeing method based on natural deep eutectic solvent and microwave extraction technology, comprises the following steps:
[0052] 1) Mix octanoic acid, menthol, ethanol, and deionized water in a molar ratio of 1:1:0.7:2, and stir in a water bath at 62°C for 5 hours to prepare natural deep eutectic solvent C3;
[0053] 2) Dry the mixture of natural dye plants comfrey, pagoda indigo, and Polygonum indigo with a mass ratio of 4:1.5:1.6, dry at 45°C for 15 hours, put it into a traditional Chinese medicine powder machine, crush it into powder, and use a vibrating sieve machine to screen for 18 minutes to obtain the particle size About 0.7mm natural dye plant dry powder E3;
[0054] 3) Mix 69mL of the natural deep eutectic solvent C3 obtained in step 1) with 4g of the natural dye plant dry powder E3 obtained in step 2) and put them in a flask, extract in a microwave extractor, the extraction power is 600W, the extraction time i...
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