CN102586942B - Method for preparing peanut protein composite fiber by using ionic liquid - Google Patents

Method for preparing peanut protein composite fiber by using ionic liquid Download PDF

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Publication number
CN102586942B
CN102586942B CN 201210070496 CN201210070496A CN102586942B CN 102586942 B CN102586942 B CN 102586942B CN 201210070496 CN201210070496 CN 201210070496 CN 201210070496 A CN201210070496 A CN 201210070496A CN 102586942 B CN102586942 B CN 102586942B
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ionic liquid
peanut protein
polyvinyl alcohol
peanut
liquid solution
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CN102586942A (en
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孙杰
杨庆利
张伟
于丽娜
刘少芳
张初署
毕洁
朱凤
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Shandong Peanut Research Institute
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Shandong Peanut Research Institute
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Abstract

The invention discloses a method for preparing a peanut protein composite fiber by using ionic liquid. The method comprises the following steps of: dissolving peanut protein and polyvinyl alcohol in imidazole ionic liquid respectively to obtain a peanut protein ionic liquid solution and a polyvinyl alcohol ionic liquid solution; mixing the peanut protein ionic liquid solution and the polyvinyl alcohol ionic liquid solution in a mixed ratio of 1:3-1:5; adding an aid to obtain a spinning solution, and entering a coagulating bath; preparing a peanut protein/polyvinyl alcohol composite fiber by awet spinning method in the coagulating bath; and stretching, washing, performing acetal treatment, applying oil, drying, curling, sizing, and thus obtaining the mixed fiber. By the method, the ionic liquid instead of strong acid and strong alkali is used as a solvent in the process of synthesizing a peanut protein fiber, so that the peanut protein and the polyvinyl alcohol can be quickly dissolved at high concentration and a low temperature, and the preparation process is non-toxic and pollution-free at the same time.

Description

A kind of method that adopts ionic liquid to prepare the peanut protein composite fibre
Technical field
The present invention relates to a kind of method for preparing the peanut protein composite fibre, particularly relate to a kind of method that adopts ionic liquid to prepare the peanut protein composite fibre, this method is raw material with peanut processing residue peanut dregs and polyvinyl alcohol and is that solvent prepares the peanut protein composite fibre with glyoxaline ion liquid solution.
Background technology
The exploitation of raw material material is most important in the weaving new product development, also is the most basic technological means.At whole world uphold nature, advocate under the tide of green consumption, adopt the hi-tech development high-performance fiber, develop the inexorable trend that green textile product has become China's weaving industry development.The characteristics of warming and nourishing healthy comfortable and easy to wear in order to adapt to, light, textile product comfortable attractive in appearance, nursing is convenient and functions such as health care become the target that people pursue, these factors promote, have promoted that cost is low, the research and development of the green textiles that pollutes little, function admirable.The peanut protein composite fibre is soft, and is comfortable and easy to wear, and antibiotic health care can biodegrade, is environment amenable green textile raw material.
China is peanut production and consumption big country, and the 50-60% of peanut yield is used for producing vegetable oil, and peanut dregs is the byproduct after the oil expression.Protein content has very high value in the peanut meal after the oil expression about 45%-49%.But at present to the research of peanut meal with utilize seldom, generally as feed and fertilizer, wasted protein resource.Utilize the peanut protein tiolan in the peanut meal just can turn waste into wealth, obtain the azelon goods of high added value.And the peanut dregs behind the extraction albumen still can be used as feed and fertilizer after necessarily handling, and has improved the utilization ratio of peanut meal.
In the existing ground nut fiber production technology, peanut protein solubility is not high, causes waste of raw materials; Dissolving, deaeration, spinning process are according to the needs high-temperature process, and severe reaction conditions is had relatively high expectations to production equipment; Need in the production process to expend a large amount of strong acid and strong bases, serious to equipment corrosion.
Summary of the invention
Technical problem to be solved by this invention provides a kind of method that adopts ionic liquid to prepare the peanut protein composite fibre, it substitutes strong acid, highly basic as the solvent in the ground nut fiber building-up process with ionic liquid, can realize high concentration, low temperature, dissolving fast, the avirulence of preparation process, pollution-free simultaneously of peanut protein and polyvinyl alcohol.
The present invention solves above-mentioned technical problem by following technical proposals: a kind of method that adopts ionic liquid to prepare the peanut protein composite fibre, it is characterized in that, it may further comprise the steps: peanut protein and polyvinyl alcohol are dissolved in respectively obtain peanut protein ionic liquid solution and polyvinyl alcohol ionic liquid solution in the glyoxaline ion liquid, be that 1:3-1:5 mixes with peanut protein ionic liquid solution and polyvinyl alcohol ionic liquid solution according to mixed proportion, the adding auxiliary agent makes spinning solution and enters coagulating bath again, in coagulating bath, prepare peanut protein/polyvinyl alcohol composite fiber by wet spinning process, drawn, washing, acetal is handled, oil, oven dry, curl, typing obtains blended fiber.
Preferably, described glyoxaline ion liquid is wherein one or more of 1-ethyl-3-N-Methylimidazoleacetic salt [EMIM] AC, 1-butyl-3-N-Methylimidazoleacetic salt [BMIM] AC and 1-methyl-3-methylimidazole dimethyl phosphate salt [MMIM] [DMP], adds according to the ratio of 1:1 or 1:1:1.
Preferably, described peanut protein refers to separate the full-defatted peanut protein that obtains, protein content 〉=50%, fat content≤1% from peanut kernels, hot moulding or cold press peanut meal.
Preferably, the concentration of described peanut protein ionic liquid solution is 20-25%, and the concentration of polyvinyl alcohol ionic liquid solution is 16-18%.
Preferably, the mixing temperature of described peanut protein ionic liquid solution and polyvinyl alcohol ionic liquid solution is 65-75 ℃.
Preferably, described auxiliary agent is one or more in boric acid, sodium tetraborate and the hydrogen peroxide, and the solid content of boric acid is 0.02-0.03%, and the solid content of sodium tetraborate is 0.02-0.03%, and the solid content of hydrogen peroxide is 0.03-0.05%.
Preferably, described coagulating bath comprises that acidity is that sodium sulphate, the acidity 0.0009-0.0018mol/L of 2.6-2.9mol/L is sulfuric acid and acetic acid mixed liquor.
Preferably, described acetal is handled and adopted concentration is the formalin of 0.8-0.9 mol/L, and temperature is 50-70 ℃, and the time is 20-30min.
Preferably, the described finish that uses that oils is the amido silicon oil oil for polypropylene fibre, and concentration is 10%.
Positive progressive effect of the present invention is: the present invention adds a certain amount of auxiliary agent respectively with peanut protein and polyvinyl alcohol and utilizes wet spinning to be prepared from behind dissolving, the mixing in glyoxaline ion liquid.Advantage of the present invention is the avirulence, pollution-free of preparation process; The high concentration that can realize peanut protein and polyvinyl alcohol is dissolved fast, and reaction evenly; Realize the room temperature spinning, energy consumption is low, and cost is low, pollutes and lacks, and has good economic and social benefit.Composite fibre protein content height of the present invention has good sucting wet air permeability, and is soft, good spinnability, luxurious, comfortable warming, the antibiotic health care of the clothing outward appearance of making.Utilize method of the present invention to prepare the peanut protein composite fibre, can improve albumen solubility and utilization rate in the preparation process, realize the room temperature spinning, shorten preparation time, reduce and pollute and energy consumption, be adapted to large-scale industrial production.
The specific embodiment
The invention will be further described below in conjunction with specific embodiment, to help understanding content of the present invention.
Embodiment 1
The peanut protein that extracts in the peanut meal is dissolved among 30% glyoxaline ion liquid 1-ethyl-3-N-Methylimidazoleacetic salt [EMIM] AC, make concentration and be 25% peanut protein ionic liquid solution, it is among glyoxaline ion liquid 1-ethyl-3-N-Methylimidazoleacetic salt [EMIM] AC of 5% that polyvinyl alcohol is dissolved in concentration, make concentration and be 18% polyvinyl alcohol ionic liquid solution, above-mentioned two kinds of solution are mixed according to the ratio of 1:5,65 ℃ were mixed 2-3 hour, add solid content and be 0.02% boric acid and solid content and be 0.04% hydrogen peroxide (boric acid and hydrogen peroxide are auxiliary agents), make spinning solution, the spinning solution deaeration enters coagulating bath again by vertical spinning machine spray silk.Coagulating bath comprises that acidity is sodium sulphate, sulfuric acid and the acetic acid mixed liquor (acidity is 0.0009-0.0018mol/L) of 2.6mol/L, in coagulating bath, prepare peanut protein/polyvinyl alcohol composite fiber by wet spinning process, temperature is 45 ℃, wash stretching through two bath stretchings and three bath waters, form peanut protein/polyvinyl alcohol composite fiber, the tensile fiber multiple at 8-10 doubly.(acetal adopts formalin to composite fibre, and concentration is 0.8-0.9 mol/L, and temperature is 55 ℃, and the time is 25min through the acetal processing.), and then washing, oil (going up oil temperature is room temperature, and the finish that uses that oils is the amido silicon oil oil for polypropylene fibre, and concentration is 10%), again drying, curl, finalizing the design obtains composite fibre.Wherein, peanut protein refers to separate the full-defatted peanut protein that obtains, protein content 〉=50%, fat content≤1% from peanut kernels, hot moulding or cold press peanut meal.
Embodiment 2
The peanut protein that extracts in the peanut meal is dissolved in the mixed liquor (ratio 1:1) of 30% glyoxaline ion liquid 1-butyl-3-N-Methylimidazoleacetic salt [BMIM] AC and 1-ethyl-3-N-Methylimidazoleacetic salt [EMIM] AC, make concentration and be 20% peanut protein ionic liquid solution, it is among 20% glyoxaline ion liquid 1-butyl-3-N-Methylimidazoleacetic salt [BMIM] AC and 1-ethyl-3-N-Methylimidazoleacetic salt [EMIM] AC mixed liquor (ratio 1:1) that polyvinyl alcohol is dissolved in concentration, make concentration and be 18% polyvinyl alcohol ionic liquid solution, above-mentioned two kinds of solution are mixed according to the ratio of 1:4,65 ℃ were mixed 3 hours, add solid content and be 0.02% sodium tetraborate and solid content and be 0.04% hydrogen peroxide, make spinning solution, the spinning solution deaeration enters coagulating bath by vertical spinning machine spray silk.Coagulating bath comprises that acidity is 2.85mol/L sodium sulphate, sulfuric acid and acetic acid mixed liquor (acidity is 0.0009-0.0018mol/L), in coagulating bath, prepare peanut protein/polyvinyl alcohol composite fiber by wet spinning process, temperature is 48 ℃, wash stretching through two bath stretchings and three bath waters, form peanut protein/polyvinyl alcohol composite fiber, the tensile fiber multiple at 8-10 doubly.(acetal adopts formaldehyde to composite fibre, and concentration is 0.8-0.9 mol/L, and temperature is 50 ℃, and the time is 20min through the acetal processing.), and then washing, oil (going up oil temperature is room temperature, and the finish that uses that oils is the amido silicon oil oil for polypropylene fibre, and concentration is 10%), again drying, curl, finalizing the design obtains composite fibre.
Embodiment 3
The peanut protein that extracts in the peanut meal is dissolved in glyoxaline ion liquid 1-butyl-3-N-Methylimidazoleacetic salt [BMIM] AC of 30%, in the mixed liquor of 1-ethyl-3-N-Methylimidazoleacetic salt [EMIM] AC and 1-methyl-3-methylimidazole dimethyl phosphate salt [MMIM] [DMP] (ratio is 1:1:1), make concentration and be 25% peanut protein ionic liquid solution, it is glyoxaline ion liquid 1-butyl-3-N-Methylimidazoleacetic salt [BMIM] AC of 10% that polyvinyl alcohol is dissolved in concentration, in the mixed solution of 1-ethyl-3-N-Methylimidazoleacetic salt [EMIM] AC and 1-methyl-3-methylimidazole dimethyl phosphate salt [MMIM] [DMP] (ratio is 1:1:1), make concentration and be 17% polyvinyl alcohol ionic liquid solution, above-mentioned two kinds of solution are mixed according to the ratio of 1:3,75 ℃ were mixed 2 hours, add solid content and be 0.02% sodium tetraborate and solid content and be 0.04% hydrogen peroxide, make spinning solution, the spinning solution deaeration enters coagulating bath by vertical spinning machine spray silk.Coagulating bath comprises that acidity is sodium sulphate, sulfuric acid and the acetic acid mixed liquor (acidity is 0.0009-0.0018mol/L) of 2.8mol/L, in coagulating bath, prepare peanut protein/polyvinyl alcohol composite fiber by wet spinning process, temperature is 45 ℃, wash stretching through two bath stretchings and three bath waters, form peanut protein/polyvinyl alcohol composite fiber, the tensile fiber multiple at 8-10 doubly.(acetal adopts formaldehyde to composite fibre, and concentration is 0.8-0.9 mol/L, and temperature is 70 ℃, and the time is 20min through the acetal processing.), and then washing, oil (going up oil temperature is room temperature, and the finish that uses that oils is the amido silicon oil oil for polypropylene fibre, and concentration is 10%), again drying, curl, finalizing the design obtains composite fibre.
Embodiment 4
The peanut protein that extracts in the peanut meal is dissolved in the mixed liquor of 1-ethyl-3-N-Methylimidazoleacetic salt [EMIM] AC of 30% and 1-methyl-3-methylimidazole dimethyl phosphate salt [MMIM] [DMP] (ratio is 1:1), make concentration and be 20% peanut protein ionic liquid solution, polyvinyl alcohol is dissolved in the mixed solution that concentration is 1-ethyl-3-N-Methylimidazoleacetic salt [EMIM] AC of 10% and 1-methyl-3-methylimidazole dimethyl phosphate salt [MMIM] [DMP] (ratio is 1:1), make concentration and be 18% polyvinyl alcohol ionic liquid solution, above-mentioned two kinds of solution are mixed according to the ratio of 1:3,65 ℃ were mixed 3 hours, the adding solid content is 0.03% boric acid, solid content is that 0.03% sodium tetraborate and solid content are 0.05% hydrogen peroxide, make spinning solution, the spinning solution deaeration enters coagulating bath by vertical spinning machine spray silk.Coagulating bath comprises that acidity is sodium sulphate, sulfuric acid and the acetic acid mixed liquor (acidity is 0.0009-0.0018mol/L) of 2.85mol/L, in coagulating bath, prepare peanut protein/polyvinyl alcohol composite fiber by wet spinning process, temperature is 50 ℃, wash stretching through two bath stretchings and three bath waters, form peanut protein/polyvinyl alcohol composite fiber, the tensile fiber multiple at 8-10 doubly.(acetal adopts formaldehyde to composite fibre, and concentration is 0.8-0.9 mol/L, and temperature is 60 ℃, and the time is 20min through the acetal processing.), and then washing, oil (going up oil temperature is room temperature, and the finish that uses that oils is the amido silicon oil oil for polypropylene fibre, and concentration is 10%), again drying, curl, finalizing the design obtains composite fibre.
Embodiment 5
The peanut protein that extracts in the peanut meal is dissolved in the mixed liquor of glyoxaline ion liquid 1-butyl-3-N-Methylimidazoleacetic salt [BMIM] AC of 30% and 1-methyl-3-methylimidazole dimethyl phosphate salt [MMIM] [DMP] (ratio is 1:1), make concentration and be 25% peanut protein ionic liquid solution, polyvinyl alcohol is dissolved in the mixed solution that concentration is glyoxaline ion liquid 1-butyl-3-N-Methylimidazoleacetic salt [BMIM] AC of 30% and 1-methyl-3-methylimidazole dimethyl phosphate salt [MMIM] [DMP] (ratio is 1:1), make concentration and be 16% polyvinyl alcohol ionic liquid solution, above-mentioned two kinds of solution are mixed according to the ratio of 1:5,70 ℃ were mixed 2 hours, add solid content and be 0.025% sodium tetraborate and solid content and be 0.03% hydrogen peroxide, make spinning solution, the spinning solution deaeration enters coagulating bath by vertical spinning machine spray silk.Coagulating bath comprises that acidity is sodium sulphate, sulfuric acid and the acetic acid mixed liquor (acidity is 0.0009-0.0018mol/L) of 2.9mol/L, in coagulating bath, prepare peanut protein/polyvinyl alcohol composite fiber by wet spinning process, temperature is 45 ℃, wash stretching through two bath stretchings and three bath waters, form peanut protein/polyvinyl alcohol composite fiber, the tensile fiber multiple at 8-10 doubly.(acetal adopts formaldehyde to composite fibre, and concentration is 0.8-0.9 mol/L, and temperature is 65 ℃, and the time is 30min through the acetal processing.), and then washing, oil (going up oil temperature is room temperature, and the finish that uses that oils is the amido silicon oil oil for polypropylene fibre, and concentration is 10%), again drying, curl, finalizing the design obtains composite fibre.
The present invention substitutes original solvent with glyoxaline ion liquid and prepares ground nut fiber.Ionic liquid is the salt of being made up of zwitterion fully, non-volatility, nonflammable, higher boiling, reusable edible, has stronger solubility property.It is the green solvent that a class has application prospect, and inorganic, organic compound and macromolecular material are all had fine solubility.Substitute strong acid, highly basic as the solvent in the ground nut fiber building-up process with ionic liquid, can realize high concentration, low temperature, dissolving fast, the avirulence of preparation process, pollution-free simultaneously of peanut protein and polyvinyl alcohol.
Above-described embodiment is not as a limitation of the invention, all any modifications of doing within the scope of the invention, is equal to replacement, improvement etc., all belongs to protection scope of the present invention.

Claims (2)

1. method that adopts ionic liquid to prepare the peanut protein composite fibre, it is characterized in that, it may further comprise the steps: peanut protein and polyvinyl alcohol are dissolved in respectively obtain peanut protein ionic liquid solution and polyvinyl alcohol ionic liquid solution in the glyoxaline ion liquid, be that 1:3-1:5 mixes with peanut protein ionic liquid solution and polyvinyl alcohol ionic liquid solution according to mixed proportion, the adding auxiliary agent makes spinning solution and enters coagulating bath again, in coagulating bath, prepare peanut protein/polyvinyl alcohol composite fiber by wet spinning process, drawn, washing, acetal is handled, oil, oven dry, curl, typing obtains blended fiber;
Described glyoxaline ion liquid is 1-ethyl-3-N-Methylimidazoleacetic salt [EMIM] AC, 1-butyl-3-N-Methylimidazoleacetic salt [BMIM] AC and 1-methyl-3-methylimidazole dimethyl phosphate salt [MMIM] [DMP], adds according to the ratio of 1:1:1;
Described peanut protein refers to separate the full-defatted peanut protein that obtains, protein content 〉=50%, fat content≤1% from peanut kernels, hot moulding or cold press peanut meal;
The concentration of described peanut protein ionic liquid solution is 20-25%, and the concentration of polyvinyl alcohol ionic liquid solution is 16-18%;
The mixing temperature of described peanut protein ionic liquid solution and polyvinyl alcohol ionic liquid solution is 65-75 ℃;
Described coagulating bath comprises that acidity is the sodium sulphate of 2.6-2.9mol/L, sulfuric acid and the acetic acid mixed liquor that acidity is 0.0009-0.0018mol/L;
Described acetal is handled and adopted concentration is the formalin of 0.8-0.9 mol/L, and temperature is 50-70 ℃, and the time is 20-30min;
The described finish that uses that oils is the amido silicon oil oil for polypropylene fibre, and concentration is 10%;
Described auxiliary agent is one or more in boric acid, sodium tetraborate and the hydrogen peroxide.
2. employing ionic liquid as claimed in claim 1 prepares the method for peanut protein composite fibre, it is characterized in that, the mass percentage concentration of described boric acid is 0.02-0.03%, the mass percentage concentration of described sodium tetraborate is 0.02-0.03%, and the mass percentage concentration of described hydrogen peroxide is 0.03-0.05%.
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