CN103526531A - Technology for bleaching soy protein by using peracetic acid - Google Patents
Technology for bleaching soy protein by using peracetic acid Download PDFInfo
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- CN103526531A CN103526531A CN201310446898.0A CN201310446898A CN103526531A CN 103526531 A CN103526531 A CN 103526531A CN 201310446898 A CN201310446898 A CN 201310446898A CN 103526531 A CN103526531 A CN 103526531A
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- bleaching
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- peracetic acid
- soy protein
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Abstract
The invention relates to a technology for bleaching soy protein by using peracetic acid. The technology comprises the steps as follows: the peracetic acid with a concentration of 4-10 g/L, sodium pyrophosphate with a concentration of 1.5 g/L and a penetrating agent with a concentration of 1.5 g/L are mixed into a bleaching solution; the bath ratio is 1:40; the pH value is adjusted to 50-80 DEG C; the temperature is kept to be 50-80 DEG C; and the bleaching time is 40-100 min. The technology has the benefits as follows: compared with other bleaching agents, the bleaching effect of the peracetic acid on soy protein fibers is superior to the effects of the bleaching agents; and after acetic acid bleaching, the whiteness value of the soy protein is 65.78, and while whiteness values of the soy protein bleached by hydrogen peroxide, rinse powder and low sodium hydrogen sulfite are 48.92, 39.22 and 40.17 respectively.
Description
Technical field
The invention belongs to textile dyeing and finishing technical field, be specifically related to a kind of bleaching process of peracetic acid to soybean protein that utilize.
Background technology
Soybean fiber is to adopt chemistry, biochemical method, from squeeze the soybean bean dregs of grease, extracts globular protein, then with itrile group, the polymerization of hydroxyl high polymer, then forms through wet spinning.In soybean fiber, protein content is about 23%～55%, and polyvinyl alcohol and other compositions are about 77%～45%.
Soybean fiber cross section is dumbbell shape, longitudinally fluted, and outward appearance has the gloss of natural real silk, soft, higher than silk, approaches cashmere; Warmth retention property, higher than acrylic fibers, approaches cotton; Drapability is better than silk; Gas permeability is much higher than silk, acrylic fibers; Wet transmitting performance is higher than acrylic fibers and silk; Coefficient of friction is little, and antistatic property is better than chemical fibre; Regain is 8.6%, lower than general natural fabric, but apparently higher than synthetic fiber, and intensity is high.Therefore, soybean fiber has the mechanical performance of natural fabric and synthetic fiber simultaneously.
Soybean fiber acid resistance is better, and alkali resistance is poor.Along with alkali concn increases, fabric feeling hardening, intensity obviously declines.Therefore, in dyeing and finishing processing, to avoid carrying out under high-temperature alkaline condition as far as possible.Soybean fiber oxidative resistance is general, therefore, is careful and selects bleaching agent and conditions of bleaching.The heat resistance of soybean fiber is poor, micro-Huang at 160 ℃, and brute force has obvious decline; In the time of 200 ℃, fiber deepens Huang; Charing in the time of 300 ℃.Soybean fiber sun-proof performance is good, and uvioresistant performance is better than cotton, viscose glue and silk.
In soybean protein fiber structure, contain carboxyl, hydroxyl, amino and itrile group isopolarity group, so dyeability is better, dyestuff Application Range is wide, available activity, directly, the dyestuff such as dispersion, faintly acid dyes.However, due to shortcomings such as soybean protein hardening under high-temperature alkaline condition, poor heat resistance, therefore, to the post-processed of soybean protein such as bleaching time must be selected the best technique of a kind of effect.
Summary of the invention
In order to solve problems of the prior art, the invention provides a kind of bleaching process of peracetic acid to soybean protein that utilize, to reach best bleaching effect.
Utilize the bleaching process of peracetic acid to soybean protein, specific as follows:
By concentration, be 4～10g/L peracetic acid, the sodium pyrophosphate that concentration is 1.5g/L, the bleeding agent that concentration is 1.5g/L is mixed into bleaching liquid, bath raio 1:40, reconciling pH value is 5～8, keeps 50～80 ℃ of temperature, bleaching time 40～100min.
Preferably, by concentration, be 6～8g/L peracetic acid, the sodium pyrophosphate that concentration is 1.5g/L, the bleeding agent that concentration is 1.5g/L is mixed into bleaching liquid, bath raio 1:40, reconciling pH value is 5～8, keeps 50～80 ℃ of temperature, bleaching time 60～100min;
Preferably, by concentration, be 8g/L peracetic acid, the sodium pyrophosphate that concentration is 1.5g/L, the bleeding agent that concentration is 1.5g/L is mixed into bleaching liquid, bath raio 1:40, reconciling pH value is 7, keeps 80 ℃ of temperature, bleaching time 100min.
The beneficial effect that the present invention has is: compare with other bleaching agents, peracetic acid is better than the former greatly to the bleaching effect of soybean fiber, after peracetic acid bleaching, the whiteness value of soybean protein is 65.78, and hydrogen peroxide bleaching, the whiteness value that floats the soybean protein of the bleaching of mao powder and the bleaching of low sodium hydrogensulfite are respectively 48.92,39.22 and 40.17.
The specific embodiment
In order further to understand advantage of the present invention, below by specific embodiment, effect of the present invention is described.
Embodiment mono-:
Utilize the bleaching process of peracetic acid to soybean protein, technique is as follows:
By concentration, be 8g/L peracetic acid, the sodium pyrophosphate that concentration is 1.5g/L, the bleeding agent that concentration is 1.5g/L is mixed into bleaching liquid, bath raio 1:40, reconciling pH value is 7, keeps 80 ℃ of temperature, bleaching time 100min.
Embodiment bis-:
Utilize the bleaching process of peracetic acid to soybean protein, technique is as follows:
By concentration, be 4g/L peracetic acid, the sodium pyrophosphate that concentration is 1.5g/L, the bleeding agent that concentration is 1.5g/L is mixed into bleaching liquid, bath raio 1:40, reconciling pH value is 8, keeps temperature 70 C, bleaching time 40min.
Embodiment tri-:
Utilize the bleaching process of peracetic acid to soybean protein, technique is as follows:
By concentration, be 10g/L peracetic acid, the sodium pyrophosphate that concentration is 1.5g/L, the bleeding agent that concentration is 1.5g/L is mixed into bleaching liquid, bath raio 1:40, reconciling pH value is 5, keeps temperature 50 C, bleaching time 80min.
With other bleaching agents as hydrogen peroxide, float a mao powder, low sodium hydrogensulfite is compared, peracetic acid is better than the former greatly to the bleaching effect of soybean fiber, concrete bleaching effect contrast is in Table 1 and table 2:
The bleaching process contrast of the different bleaching agents of table 1
The contrast of the different bleaching agent bleaching effects of table 2
In sum, above embodiment is only in order to illustrate the present invention and unrestricted technical scheme described in the invention; Therefore, although this description has been described in detail the present invention with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can modify or be equal to replacement the present invention; And all do not depart from technical scheme and the improvement thereof of the spirit and scope of the present invention, it all should be encompassed in claim scope of the present invention.
Claims (3)
1. utilize the bleaching process of peracetic acid to soybean protein, it is characterized in that, technique is as follows:
By concentration, be 4～10g/L peracetic acid, the sodium pyrophosphate that concentration is 1.5g/L, the bleeding agent that concentration is 1.5g/L is mixed into bleaching liquid, bath raio 1:40, reconciling pH value is 5～8, keeps 50～80 ℃ of temperature, bleaching time 40～100min.
2. the bleaching process of peracetic acid to soybean protein that utilize according to claim 1, it is characterized in that, technique is as follows: by concentration, be 6～8g/L peracetic acid, concentration is the sodium pyrophosphate of 1.5g/L, concentration is that the bleeding agent of 1.5g/L is mixed into bleaching liquid, bath raio 1:40, and reconciling pH value is 5～8, keep 50～80 ℃ of temperature, bleaching time 60～100min.
3. the bleaching process of peracetic acid to soybean protein that utilize according to claim 2, it is characterized in that, technique is as follows: by concentration, be 8g/L peracetic acid, concentration is the sodium pyrophosphate of 1.5g/L, concentration is that the bleeding agent of 1.5g/L is mixed into bleaching liquid, bath raio 1:40, and reconciling pH value is 7, keep 80 ℃ of temperature, bleaching time 100min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310446898.0A CN103526531A (en) | 2013-09-27 | 2013-09-27 | Technology for bleaching soy protein by using peracetic acid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310446898.0A CN103526531A (en) | 2013-09-27 | 2013-09-27 | Technology for bleaching soy protein by using peracetic acid |
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| Publication Number | Publication Date |
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| CN103526531A true CN103526531A (en) | 2014-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310446898.0A Pending CN103526531A (en) | 2013-09-27 | 2013-09-27 | Technology for bleaching soy protein by using peracetic acid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484010A (en) * | 2015-12-19 | 2016-04-13 | 张家港市振新印染有限公司 | Bleaching technology for soybean protein fibers |
| CN106498699A (en) * | 2015-09-07 | 2017-03-15 | 中国石化仪征化纤有限责任公司 | Polyesteramide chopped fiber or the method for bleaching of its fabric |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101144190A (en) * | 2007-10-19 | 2008-03-19 | 东华大学 | Tossa short flow chemical degumming method |
| CN101148820A (en) * | 2007-10-19 | 2008-03-26 | 东华大学 | Method for bleaching tossa |
| CN102517869A (en) * | 2011-12-06 | 2012-06-27 | 常熟市凯达印染有限公司 | Bleaching process of natural fibers |
| CN102747436A (en) * | 2012-05-24 | 2012-10-24 | 太仓市名流制衣有限公司 | Manufacturing process of grass cloth |
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2013
- 2013-09-27 CN CN201310446898.0A patent/CN103526531A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101144190A (en) * | 2007-10-19 | 2008-03-19 | 东华大学 | Tossa short flow chemical degumming method |
| CN101148820A (en) * | 2007-10-19 | 2008-03-26 | 东华大学 | Method for bleaching tossa |
| CN102517869A (en) * | 2011-12-06 | 2012-06-27 | 常熟市凯达印染有限公司 | Bleaching process of natural fibers |
| CN102747436A (en) * | 2012-05-24 | 2012-10-24 | 太仓市名流制衣有限公司 | Manufacturing process of grass cloth |
Non-Patent Citations (1)
| Title |
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| 刘夺奎: "大豆蛋白纤维的过醋酸漂白研究", 《印染》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106498699A (en) * | 2015-09-07 | 2017-03-15 | 中国石化仪征化纤有限责任公司 | Polyesteramide chopped fiber or the method for bleaching of its fabric |
| CN105484010A (en) * | 2015-12-19 | 2016-04-13 | 张家港市振新印染有限公司 | Bleaching technology for soybean protein fibers |
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Application publication date: 20140122 |