A kind of bamboo fiber dyeing method based on mangosteen natural dye
A technology of natural bamboo fiber and natural dyes, applied in natural dyes, dyeing methods, azo dyes, etc., can solve the problems that the research of mangosteen natural dyes has not been reported, and achieve the improvement of dyeability, color fastness and color depth , the effect of improving work efficiency
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Embodiment 1
[0026] (1) Wash and dry the fresh mangosteen shells after eating, and then pulverize them to obtain 50 mesh powdered mangosteen shells. Then, in parts by weight, place 1 weight part of powdered mangosteen shells in 50 parts of hydrogen-containing In 75% ethanol aqueous solution of sodium oxide, wherein the content of sodium hydroxide is 1g / L, treat it under 1000W ultrasonic wave for 15s, reflux extraction twice, combine the two filtrates, and add citric acid to adjust the pH value to 3 , concentrated to obtain the mangosteen natural dye, the maximum absorbance of the mangosteen natural dye at a wavelength of 531nm is 0.67.
[0027] (2) With a bath ratio of 1:40, the natural bamboo fiber was immersed in 1% sodium hydroxide aqueous solution, soaked at room temperature for 5 minutes, taken out, washed with water until neutral, and the alkali-pretreated natural bamboo fiber was obtained.
[0028] (3) With a bath ratio of 1:100, soak the alkali-pretreated natural bamboo fiber in ma...
Embodiment 2
[0030] (1) Wash and dry the fresh mangosteen shells after eating, and then crush them to obtain 80 mesh powdered mangosteen shells. Then, in parts by weight, place 1 weight part of powdered mangosteen shells in 100 parts of hydrogen-containing In 80% ethanol aqueous solution of sodium oxide, wherein the content of sodium hydroxide is 1g / L, treat it under 1500W ultrasonic wave for 20s, reflux extraction twice, combine the two filtrates, and add citric acid to adjust the pH value to 7 , concentrated to obtain the mangosteen natural dye, the maximum absorbance of the mangosteen natural dye at a wavelength of 531nm is 0.92.
[0031] (2) With a bath ratio of 1:40, the natural bamboo fiber was immersed in 5% sodium hydroxide aqueous solution, soaked at room temperature for 10 minutes, taken out, washed with water until neutral, and the alkali-pretreated natural bamboo fiber was obtained.
[0032] (3) Soak the alkali-pretreated natural bamboo fiber in mangosteen natural dye at a bath...
Embodiment 3
[0034] (1) Wash and dry the fresh mangosteen shells after eating, crush them to obtain 60 mesh powdered mangosteen shells, and then place 1 weight part of powdered mangosteen shells in 80 parts of hydrogen-containing In the 75-80% ethanol aqueous solution of sodium oxide, the content of sodium hydroxide is 1g / L, treat it under 1200W ultrasonic wave for 18s, reflux extraction twice, combine the two filtrates, and add citric acid to adjust the pH value to 5, concentrated to obtain the mangosteen natural dye, the maximum absorbance of the mangosteen natural dye at a wavelength of 531nm is 0.82.
[0035] (2) With a bath ratio of 1:40, the natural bamboo fiber was immersed in 3% sodium hydroxide aqueous solution, soaked at room temperature for 7 minutes, taken out, washed with water until neutral, and the alkali-pretreated natural bamboo fiber was obtained.
[0036] (3) With a bath ratio of 1:100, soak the alkali-pretreated natural bamboo fiber in mangosteen natural dye, shake at a...
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