The no mordant dyeing color method of a kind of monascorubin on protein fibre
Technical field:
The invention belongs to the light industry field, relate to the no mordant dyeing color method of a kind of monascorubin on protein fibre, specifically a kind of in the presence of sodium alginate, adopt monascorubin protein fibre not to be had the method for mordant dyeing look.
Background technology:
Monascorubin is a kind of natural colouring matter that utilizes the monascus ruber fermented and cultured to make, have abundant raw material, production process non-environmental-pollution, look valency height, good stability, safe, advantage such as tinctorial property is good, also have reducing blood lipid, anti-oxidant, suppress sudden change and effect such as anticancer, be widely used in food color.At present, red colouring agent for food, also used as a Chinese medicine manufacturing enterprise only limits to the exploitation of curable product and food coloring, because the variation of consumption structure, benefit is generally depressed.The present invention inquires into monascorubin is used for fabrics printing and dyeing processing, is intended to enlarge the monascorubin Application Areas, improves economic benefit of enterprises.
The natural dye exploitation is renewable because of its raw material, helps protecting national resource and ecological environment, is particularly suitable for developing the high added value ecological textile.Yet most of natural dye is poor to fiber affinity, need add mordant during dyeing.The mordant that natural dye dying is used is chemical reagent mostly, normally divalence or trivalent metal, and as sulfate, acetate or the oxide of aluminium, iron, copper, tin, chromium, these heavy metal ion major parts are harmful to human body and environment, are unfavorable for ecology and environmental protection.
Therefore, develop a kind of natural dye that does not need to add mordant protein fibre dyeed, be a kind of brand-new field and technology.
Summary of the invention:
The objective of the invention is to improve at the dyeing of traditional employing chemistry mordant, improve the no mordant dyeing color method of a kind of monascorubin on protein fibre, use this method and can improve dye-uptake, degree of fixation and the COLOR FASTNESS of monascorubin on protein fibre, realize the no mordant dyeing look of monascorubin on protein fibre.
The technical scheme that the present invention takes is as follows, and the no mordant dyeing color method of a kind of monascorubin on protein fibre is characterized in that: add sodium alginate in the monascorubin dye liquor, protein fibre is dyeed, the sodium alginate consumption is 1~4g/L.
Further, the present invention includes following steps:
1, dyeing: in the monascorubin dye liquor, add sodium alginate, protein fibre is dyeed, the monascorubin consumption is 1-5%o.w.f., the sodium alginate consumption is 1~4g/L; bath raio 1:20-1:40, dye bath pH=3-6, and 30 ℃ are dyed; 1-2 ℃/min is warming up to dyeing temperature 70-90 ℃, insulation 60min;
2, post processing: after dyeing is finished, with 0.5-2g/L standard soap flakes the protein fibre after dyeing is cleaned, bath raio is 1:30-1:50, adds protein fibre under the room temperature, is warming up to 60 ℃ of insulations and cleans 20min, cold wash then, oven dry.
Operation principle of the present invention and beneficial effect are as follows:
Operation principle: sodium alginate is a kind of hydrophily polysaccharide that proposes from the seaweed plant sea-tangle, and it has carboxyl, is the high polyuronide that the aldehyde radical of beta-D-mannuronic acid forms with glycosidic bond, and low-heat is nontoxic, and is easily expanded, suppleness is high.The present invention utilizes sodium alginate to have the carboxylic acid ion of cloudy lotus property, can have an effect to increase with the amino isopolarity group on the protein fibre on the one hand and dye seat, also can form hydrogen bond and Van der Waals force on the other hand with groups such as the hydroxyl of monascorubin, carbonyls, improve the affinity of fiber to monascorubin, pigment molecular and fiber molecule can be combined better, thereby improve Dry Sack rate and the COLOR FASTNESS of monascorubin on protein fibre.
Beneficial effect: the present invention is used for the monascorubin natural dye dying with eco-friendly sodium alginate, a kind of not only compliance with environmental protection requirements is provided, but also higher Dry Sack rate and COLOR FASTNESS, simple protein fibre monascorubin natural dye dying technology has been arranged, overcome the heavy-metal pollution problem of traditional chemical mordant dyeing, had very significant effect aspect the dyeing quality and the feature of environmental protection.
The invention will be further described below in conjunction with the specific embodiment.
The specific embodiment:
Embodiment 1: monascorubin was to the no mordant dyeing look of cocoon fiber under sodium alginate existed.
At monascorubin consumption 3%o.w.f., pH=4, bath raio is 1:30, the sodium alginate consumption is respectively 0,1, and 2,3, under the condition of 4g/L, cocoon fiber is dyeed, after dyeing is finished, with 0.5-2g/L standard soap flakes the protein fibre after dyeing is cleaned, bath raio is 1:30-1:50, add protein fibre under the room temperature, be warming up to 60 ℃ of insulations and clean 20min, cold wash then, oven dry.
Measure dye uptake and the K/S value of embodiment 1, statistics is as shown in table 1.
As can be seen from Table 1, can significantly improve dye uptake and K/S value after adding people's sodium alginate in the dye bath.Sodium alginate be carboxylic acid sodium salt (contain-COONa), can be water-soluble, and the carboxylic acid ion (COO-) with cloudy lotus property, can form hydrogen bond with monascorubin and fiber and Van der Waals force combines, improve the affinity of fiber to monascorubin, make between pigment molecular and the fiber molecule and can combine better, thus the dyeability of raising monascorubin.
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Embodiment 2: monascorubin was to the no mordant dyeing look of wool fibre under sodium alginate existed.
Process is with embodiment 1, and difference is monascorubin consumption 3%o.w.f., pH=4; bath raio is 1:30, and the sodium alginate consumption is respectively 0,2, under the condition of 4g/L, according to process curve wool fibre is dyeed; measure dye uptake and K/S value, the result is as shown in table 2.
Table 2, sodium alginate consumption are to the influence of monascorubin dyeability on wool.
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Embodiment 3: the dyefastness contrast.
Technical process is distinguished at sodium alginate consumption 4g/L with embodiment 1, monascorubin consumption 2%owf, and pH=4, bath raio is under the condition of 1:30, according to process curve cocoon fiber is dyeed, and measures soaping fastness and light fastness.
The foregoing description and the dyefastness that does not add the sodium alginate sample are compared, the results are shown in Table 3.
As can be seen from Table 3, add sodium alginate in the monascorubin dyeing course, the stained specimens soaping fastness can be improved about 1 grade, light fastness improves about 1.5 grades.Sodium alginate can form hydrogen bond with monascorubin, fiber molecule and Van der Waals force combines, thereby COLOR FASTNESS is improved.
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In conjunction with the foregoing description as can be seen, adopt sodium alginate to substitute traditional chemical mordant, can effectively improve dye-uptake, degree of fixation and the COLOR FASTNESS of monascorubin on protein fibre, realize that the monascorubin natural dye does not have the mordant dyeing look.Overcome the heavy-metal pollution problem of traditional chemical mordant dyeing simultaneously, compliance with environmental protection requirements.