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Spatholobus stem natural dye preparation and its uses

A technology of natural dyes and Scutellaria japonicas, applied in natural dyes and their application fields, can solve problems such as no reports, and achieve the effects of abundant raw materials, simple extraction process, and increased chromatography.

Inactive Publication Date: 2007-07-11
ZHEJIANG SCI-TECH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] There are no reports at home and abroad about the preparation and dyeing method of natural dyes from Spathiphyllum Spatholobus

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: Preparation of Caulis Spatholobus Natural Dye

[0029] Weigh 500 grams of Mildew Spatholobus, wash it, dry it in the air, crush it mechanically, soak it in 20 times of water for 4-6 hours, add the required amount of sodium carbonate, adjust the pH of the soaking solution to 10, heat up to 98-100°C, After boiling for 60 minutes, filter. The filter residue is further leached with 10 times water and a dilute alkaline solution with a pH of 10, and the two leaching solutions are combined, neutralized, and concentrated to 500 ml, which is the concentrated solution of the natural dye of Spatholobus Spatholobus. Its maximum absorption wavelength is measured on a UV-2401PC type ultraviolet-visible spectrophotometer near 500nm.

Embodiment 2

[0030] Embodiment 2: real silk fiber pre-mordant dyeing

[0031] ①Immerse the silk fiber in water to moisten it, take it out and squeeze it dry, and set it aside.

[0032] ② Dissolve 10% (o.w.f) potassium aluminum sulfate in water so that the bath ratio is 1:100, put the above fibers in, heat to 80°C, keep warm for 30 minutes, take out the fibers and wash them.

[0033] ③ Prepare a dyeing solution with the natural dye of Spathiphyllum Spatholobus, the dye concentration is 10% (o.w.f), the pH value of the dyeing solution is 6, the bath ratio is 1:20, and the dyeing is performed at 95° C. for 60 minutes. After dyeing, wash and dry.

Embodiment 3

[0034] Embodiment 3: real silk back mordant dyeing

[0035] ① Soak the silk in water to moisten it, take it out and squeeze it dry, and set it aside.

[0036] ② Make a dyeing solution with natural dyes from Spathiphyllum Spatholobus, the dye concentration is 5% (o.w.f), the pH value of the dyeing solution is 4, and the bath ratio is 1:50. After the above fabrics are immersed in the dyeing solution, they are dyed at 95°C for 60 minutes. After dyeing, wash with water and squeeze dry.

[0037] ③ Add the dyed fabric to a solution containing 5% (o.w.f) ferrous sulfate for post-mordanting treatment, the bath ratio is 1:80, the temperature is 60°C, and the time is 30 minutes. After dyeing, take out the fabric, wash it, and dry it.

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Abstract

The invention discloses a preparing method and application of natural dye of spatholobus stem, which comprises the following steps: grinding spatholobus stem; immersing in the sodium carbonate solution with pH value at 8-10 under 95-100 deg. c for 60-90min; filtering to obtain the primary liquid of natural dye; condensing the primary liquid; solidifying; grinding; obtaining the powder-shaped natural dye.

Description

technical field [0001] The invention relates to the field of natural dyes and their applications, in particular to the preparation and application of a natural dye from Spatholobus spathae. Background technique [0002] With the increasing awareness of human environmental protection and the increasing concern for their own health, the harm of some synthetic dyes to human health and the ecological environment has become more and more noticeable. Existing research results have shown that there are 23 kinds of carcinogenic aromatic amines, more than 100 synthetic dyes may produce carcinogens, and more than 20 synthetic dyes are allergic to the skin. As a result, synthetic dyes and the textiles they dye have made consumers suspicious. Not only that, with the continuous consumption of petroleum resources on the earth, the problem of raw materials for synthetic dyes has become increasingly tense. [0003] Natural dyes are extracted from plant roots, leaves, bark, trunks, husks, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00D06P1/34D06P3/24
Inventor 余志成杨斌马廷方
Owner ZHEJIANG SCI-TECH UNIV
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