CN106906521B - The manufacturing method of one main laver extract fiber - Google Patents
The manufacturing method of one main laver extract fiber Download PDFInfo
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- CN106906521B CN106906521B CN201710154727.9A CN201710154727A CN106906521B CN 106906521 B CN106906521 B CN 106906521B CN 201710154727 A CN201710154727 A CN 201710154727A CN 106906521 B CN106906521 B CN 106906521B
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- seaweed
- sodium alginate
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01B—MECHANICAL TREATMENT OF NATURAL FIBROUS OR FILAMENTARY MATERIAL TO OBTAIN FIBRES OF FILAMENTS, e.g. FOR SPINNING
- D01B9/00—Other mechanical treatment of natural fibrous or filamentary material to obtain fibres or filaments
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/006—Heteroglycans, i.e. polysaccharides having more than one sugar residue in the main chain in either alternating or less regular sequence; Gellans; Succinoglycans; Arabinogalactans; Tragacanth or gum tragacanth or traganth from Astragalus; Gum Karaya from Sterculia urens; Gum Ghatti from Anogeissus latifolia; Derivatives thereof
- C08B37/0084—Guluromannuronans, e.g. alginic acid, i.e. D-mannuronic acid and D-guluronic acid units linked with alternating alpha- and beta-1,4-glycosidic bonds; Derivatives thereof, e.g. alginates
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01C—CHEMICAL OR BIOLOGICAL TREATMENT OF NATURAL FILAMENTARY OR FIBROUS MATERIAL TO OBTAIN FILAMENTS OR FIBRES FOR SPINNING; CARBONISING RAGS TO RECOVER ANIMAL FIBRES
- D01C1/00—Treatment of vegetable material
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/02—Preparation of spinning solutions
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/06—Wet spinning methods
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
- D01F9/04—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of alginates
Abstract
One main laver extract fiber, can be used in medical, food, biodegradable field.Manufacturing method includes seaweed extract extraction step and fiber manufacturing step, the present invention overcomes traditional marine extract spinning capability is low, the not high disadvantage of intensity can be prepared quickly by the technique and extract fibres with the seaweed of good strength and low swelling behavior.
Description
Technical field
The present invention relates to a main laver extract fibers, can be used in medical, food, biodegradable field.
Background technique
China borders on the sea in the east, has wide sea area, can greatly develop seaweed biomass resource, seaweed converted products is very
It is abundant, such as sodium alginate, iodine and mannitol, seaweed dietary fiber, wherein sodium alginate with its good biological degradability and
Biocompatibility is widely used in the fields such as weaving, medicine, food, chemistry, biology；Iodine is that growth in humans's development is indispensable
Few microelement；Mannitol can be used for the industries such as food, medical plastics.Traditional seaweed processing method technological obsolescence, water consumption
Energy consumption is big, lacks deep process technology, has been unable to meet the demand of Chinese society development, especially petroleum resources it is increasingly deficient,
Biomass resource will be increasingly becoming under the background of the leading role of industrial economy, it is necessary to it upgrades to traditional seaweed processing technology,
Its potential advantages in terms of production new material, food and chemicals exploitation can just be given full play to.Traditional extraction process exist with
Lower main problem: 1) since sodium alginate viscosity is big, being difficult to filter after digestion, needs a large amount of water to dilute, water consumption is up to 1:
1000；2) intermediate product alginic acid is unstable, degradable, therefore obtained product yield and viscosity are all relatively low；3) it impregnates
When residual need to be had in sodium alginate product, while increasing production cost and environmental pollution added with noxious material formaldehyde.4) it soaks
The time of bubble and digestion is longer, is altogether 6-8h or so, influences production efficiency.Sodium alginate is mixed through spinning or with other ingredients
Prepare fiber and the domestic and international existing research of non-woven fabrics, Wren David etc., which has been invented, to be conducive to the preparations such as sodium alginate and cure the wound fabric
(WO9001954), David P.Tong application brown alga fiber aftertreatment technology (USP4562110), seedling nine is prosperous has applied for shell
Glycan, collagen and calcium alginate meet spongy biological dressing and its preparation process (ZL02111437.4) etc..In these patents
Mainly using the methods of solution-polymerized SBR or film forming preparation brown alga fiber and composite material, due to sodium alginate wet spinning concentration
It is relatively low, therefore the ability of spinning is also relatively low, intensity is not high.
Summary of the invention
It is an object of the present invention to overcoming complicated seaweed extraction process, finished product height and purity limited, product spinning effect
The problems such as fruit is poor.
The second object of the present invention is to overcome traditional marine extract spinning capability low, the not high disadvantage of intensity, leads to
The brown alga fiber with good strength and low swelling behavior can quickly be prepared by crossing the technique.
The manufacturing method of one main laver extract fiber, it is characterised in that including seaweed extract extraction step and fiber
Manufacturing step, it is characterised in that:
Step A: seaweed extract extracts
(1) seaweed of selection is put into acetum and is impregnated, pulled seaweed out and drain away the water, then steam, steaming temperature
It is 80-100 DEG C, from water boiling 5-8 minutes spare, the seaweeds that will have been steamed of taking-up are dried to moisture≤11-13%
(2) pressure 2.3-3min is tieed up under 1.1-1.4MPa pressure to pretreated seaweed and carries out Steam explosion treatment；
(3) enzymatic treatment: and then low-temperature cellulase is added in the product that step (2) obtains, in 25 DEG C~35 DEG C of water
- 48h for 24 hours is digested in bath,
(4) water being added after enzyme relative to 11-15 times of seaweed dry weight (m/V, g/ml) dilutes, and uses tube centrifuge
It is centrifuged under the conditions of revolving speed is 2000-15000r/min, realizes the separation of seaweed digestion slag and supernatant；
(5) the seaweed digestion slag after being centrifuged is mainly seaweed fiber, with relative to 15-20 times of solid-phase material dry weight (m/V,
G/ml 0.5-1% hydrogen peroxide bleaching), bleaching time 20-30min, temperature are 10-25 DEG C, and vacuum is dry at 50 DEG C after bleaching
Dry, crushing just obtains seaweed dietary fiber finished product；
(6) main component is sodium alginate, pigment, iodine, mannitol in supernatant, and supernatant is 6-7 with salt acid for adjusting pH
The calcium chloride solution of the 10-15% of 0.25 times of volume is added afterwards, forms calcium alginate precipitating, calcium alginate and filter is obtained by filtration
Liquid；
(7) calcium alginate is added in the hydrochloric acid solution of 5-9% at 25-40 DEG C and is acidified 15-20min, generate brown alga
Acid coagulum filters to isolate and is slowly added to the sodium carbonate dissolution brown alga acid coagulum of 15-20% after brown alga acid coagulum and forms alginic acid
Sodium solution, the 90-95% ethanol solution that 3-4 times (V/V) is added into sodium alginate solution precipitate sodium alginate, filter brown alga
Sour sodium, then through obtaining the sodium alginate finished product that content is 90 ± 1.09wt% with vacuum freeze drying, crushing；
Step B: manufacture brown alga fiber
It takes made from step A in 9-15 grams of the sodium alginate aqueous solution for being dissolved in the 80-100 grams of 2-5% containing sodium bicarbonate and obtains
A certain amount of aqueous sodium hypochlorite solution is added in the sodium alginate solution of 8-11%, reaches its content in sodium alginate solution
0.05-0.1%, the high-speed stirred at 50-100 DEG C are filtered using 100-150 mesh filter cloth, then pass through spinning screw for brown alga
Acid sodium solution gel is expressed into the first coagulating bath and carries out ion exchange in solidification and the second gelation, then brown by what is obtained
Algae fiber obtains spinnable brown alga fibrous finished product by the processes such as washing, dry.First coagulating bath contains 60-80% ethyl alcohol, water
And 1% cetylpyridinium chloride, coagulation bath temperature are 30-40 DEG C, drawing-off 60-130% obtains brown alga fiber, then will
Brown alga fiber enters to be carried out by the second gelation that 2-5% ethyl alcohol, 0.5-1% aqueous hydrochloric acid solution and 3-8% sodium chloride form
Ion exchange, 30-40 DEG C of coagulation bath temperature, brown alga fiber is 80-100% in the multiple of the second gelation drawing-off, then will
To brown alga fiber obtain spinnable brown alga fibrous finished product by the processes such as washing, dry.
The bacterium source of low-temperature cellulase is selected from: bacillus, basidiomycetes, rumen bacteria, Cellvibrio, pyrenomycetes,
Mould and small spore mould, dosage are 0.5 times of step (2) product.
The seaweed diet fiber product that above-mentioned preparation method obtains can be used in improving constipation.
The utility model has the advantages that
1. the present invention passes through while improving sodium alginate extractive technique and brown alga fiber spinning technology, collective effect improves
The properties of brown alga fiber.
2. the clean and effective system that the present invention realizes laver product using technologies such as steam explosion, tubular type centrifugation, ultrafiltration, electrodialysis
It is standby, seaweed is pre-processed by pollution-free steam explosion technology, by breaking-wall cell, for downstream component separation provide it is good
Good condition, after the digestion of steam explosion seaweed using the technologies such as tubular type centrifugation, ultrafiltration, electrodialysis separate seaweed slag, pigment, mannitol and
Iodine provides new way for seaweed component separation joint-product multiple product, and being compared with the traditional method the present invention can water-saving 30%-
50%, energy saving 20-30% avoid using Toxic formaldehyde laking process, shorten digestion time, and economy prospect is good.
3. the present invention reduces production energy consumption and operability since hydrolysis temperature is low.The low temperature used in enzymatic hydrolysis is fine
The gelled pill that plain enzyme is immobilization low-temperature cellulase is tieed up, the immobilization low-temperature cellulase is to consolidate low-temperature cellulase
Determine onto carriers such as sodium alginates, reusable gelled pill is made, therefore low-temperature cellulase can reuse, drops
Low production cost.
4. the present invention uses vacuum freeze drying when seaweed cellulose is dried, crushes and use ball mill grinding, warp
It is experimentally confirmed that using in the seaweed cellulose after vacuum freeze drying, moisture content is 1.26wt%, whiteness 90.1%, dry compared to other
Dry mode has higher whiteness and lower moisture content.
Specific embodiment
Embodiment 1:
Step A: seaweed extract extracts
(1) seaweed of selection is put into acetum and is impregnated, pulled seaweed out and drain away the water, then steam, steaming temperature
It is 100 DEG C, from water boiling 8 minutes spare, the seaweeds that will have been steamed of taking-up are dried to moisture≤11-13%
(2) pressure 2.3min is tieed up under 1.4MPa pressure to pretreated seaweed and carries out Steam explosion treatment；
(3) enzymatic treatment: and then low-temperature cellulase is added in the product that step (2) obtains, the enzyme in 35 DEG C of water-bath
Solution for 24 hours,
(4) water being added after enzyme relative to 11 times of seaweed dry weight (m/V, g/ml) dilutes, and is existed with tube centrifuge
Revolving speed is centrifuged under the conditions of being 15000r/min, realizes the separation of seaweed digestion slag and supernatant；
(5) the seaweed digestion slag after being centrifuged is mainly seaweed fiber, with relative to solid-phase material dry weight 15 times of (m/V, g/
Ml 0.5% hydrogen peroxide bleaching), bleaching time 20min, temperature are 10-25 DEG C, are dried in vacuo, crush at 50 DEG C after bleaching
Just seaweed dietary fiber finished product is obtained；
(6) main component is sodium alginate, pigment, iodine, mannitol in supernatant, after supernatant salt acid for adjusting pH is 6
15% calcium chloride solution of 0.25 times of volume is added, forms calcium alginate precipitating, calcium alginate and filtrate is obtained by filtration；
(7) calcium alginate is added in 5% hydrochloric acid solution and is acidified 20min at 40 DEG C, generate brown alga acid coagulum, mistake
Filter, which is isolated, to be slowly added to 15% sodium carbonate dissolution brown alga acid coagulum after brown alga acid coagulum and forms sodium alginate solution, toward brown alga
95% ethanol solution that 3 times (V/V) are added in acid sodium solution precipitates sodium alginate, filters sodium alginate, then through with vacuum
Freeze-drying crushes the sodium alginate finished product for obtaining content as 90wt%；
Step B: manufacture fiber
It takes made from step A 9 grams of sodium alginate to be dissolved in 100 grams of aqueous solutions containing sodium bicarbonate 5% and obtains 8% brown alga
A certain amount of aqueous sodium hypochlorite solution is added in acid sodium solution, so that its content in sodium alginate solution is reached 0.05%, at 100 DEG C
Lower high-speed stirred is filtered, then sodium alginate solution gel is expressed into the first solidification by spinning screw using 150 mesh filter cloths
Ion exchange is carried out in solidification and the second gelation in bath, then obtained brown alga fiber is obtained by the processes such as washing, dry
To spinnable brown alga fibrous finished product.First coagulating bath contains 60% ethyl alcohol, water and 1% cetylpyridinium chloride, coagulating bath
Temperature is 40 DEG C, and drawing-off 130% obtains brown alga fiber, then enters brown alga fiber by 2% ethyl alcohol, 0.5% aqueous hydrochloric acid solution
And 3% sodium chloride composition the second gelation carry out ion exchange, 40 DEG C of coagulation bath temperature, brown alga fiber second solidification
The multiple for bathing drawing-off is 80%, then by obtained brown alga fiber by the processes such as washing, dry obtain spinnable brown alga fiber at
Product.
Embodiment 2:
Step A: seaweed extract extracts
(1) seaweed of selection is put into acetum and is impregnated, pulled seaweed out and drain away the water, then steam, steaming temperature
It is 90 DEG C, taking-up in from water boiling 7 minutes is spare, and the seaweed that will have been steamed is dried to moisture≤12%
(2) pressure 2.3min is tieed up under 1.3MPa pressure to pretreated seaweed and carries out Steam explosion treatment；
(3) enzymatic treatment: and then low-temperature cellulase is added in the product that step (2) obtains, the enzyme in 25 DEG C of water-bath
48h is solved,
(4) water being added after enzyme relative to 5 times of seaweed dry weight (m/V, g/ml) dilutes, and is being turned with tube centrifuge
Speed is centrifuged under the conditions of being 2000r/min, realizes the separation of seaweed digestion slag and supernatant；
(5) the seaweed digestion slag after being centrifuged is mainly seaweed fiber, with relative to solid-phase material dry weight 20 times of (m/V, g/
Ml 0.52% hydrogen peroxide bleaching), bleaching time 20min, temperature are 25 DEG C, are dried in vacuo, crush just at 50 DEG C after bleaching
Obtain seaweed dietary fiber finished product；
(6) main component is sodium alginate, pigment, iodine, mannitol in supernatant, after supernatant salt acid for adjusting pH is 6
13% calcium chloride solution of 0.25 times of volume is added, forms calcium alginate precipitating, calcium alginate and filtrate is obtained by filtration；
(7) calcium alginate is added in 5.9% hydrochloric acid solution and is acidified 20min at 30 DEG C, generate brown alga acid coagulum,
It filters to isolate and is slowly added to 20% sodium carbonate dissolution brown alga acid coagulum after brown alga acid coagulum and forms sodium alginate solution, toward brown
95% ethanol solution that 4 times (V/V) are added in solution of sodium alginate precipitates sodium alginate, filters sodium alginate, then through with true
Vacuum freecing-dry, crushing obtain the sodium alginate finished product that content is 91.09wt%；
Step B: manufacture fiber
Take made from step A 10 grams of sodium alginate be dissolved in obtained in 100 grams of aqueous solutions containing sodium bicarbonate 5% 11% it is brown
A certain amount of aqueous sodium hypochlorite solution is added in solution of sodium alginate, so that its content in sodium alginate solution is reached 0.1%, at 50 DEG C
Lower high-speed stirred is filtered, then sodium alginate solution gel is expressed into the first solidification by spinning screw using 100 mesh filter cloths
Ion exchange is carried out in solidification and the second gelation in bath, then obtained brown alga fiber is obtained by the processes such as washing, dry
To spinnable brown alga fibrous finished product.First coagulating bath contains 68% ethyl alcohol, water and 1% cetylpyridinium chloride, coagulating bath
Temperature is 40 DEG C, and drawing-off 130% obtains brown alga fiber, is then entered brown alga fiber water-soluble by 2.5% ethyl alcohol, 0.5% hydrochloric acid
The second gelation of liquid and 8% sodium chloride composition carries out ion exchange, and 40 DEG C of coagulation bath temperature, brown alga fiber is solidifying second
Admittedly the multiple for bathing drawing-off is 80%, then obtained brown alga fiber is obtained spinnable brown alga fiber by the processes such as washing, dry
Finished product.
Comparative example 1:
Using commercially available high viscosity sodium alginate, fiber producing processes are the same as embodiment 1
Comparative example 2:
Step A: extract extracts
(1) it pre-processes: being cut into 3-15cm segment for sandy soil are washed away after dry kelp soaking 1-2h；
(2) steam explosion is handled: being tieed up pressure 9min under 0.9MPa pressure to pretreated kelp and is carried out Steam explosion treatment；
(3) it digests: to 2% sodium carbonate liquor of the kelp after steam explosion relative to 14 times of kelp dry weight (m/V, g/ml)
It is digested, digestion temperature is 50 DEG C, digestion time 1h；
(4) be centrifuged: after digestion be added relative to 13 times of kelp dry weight (m/V, g/ml) water dilute, with tubular type from
Scheming is centrifuged under the conditions of revolving speed is 8000r/min, realizes the separation of kelp digestion slag and supernatant liquid；
(5) the kelp digestion slag after being centrifuged is mainly Kelp fiber, with relative to solid-phase material dry weight 12 times of (m/V, g/
Ml 2% hydrogen peroxide bleaching), bleaching time 20min, temperature are 40 DEG C, are dried in vacuo, crush just at 50 DEG C after bleaching
Obtain kelp dietary fiber finished product；
(6) main component is sodium alginate, pigment, iodine, mannitol in supernatant, and supernatant salt acid for adjusting pH is 6.3
15% calcium chloride solution of 0.4 times of volume is added afterwards, forms calcium alginate precipitating, calcium alginate and filtrate is obtained by filtration；
(7) calcium alginate is added in the hydrochloric acid solution of 5-10% at 25 DEG C and is acidified 20min, generate brown alga acid cure
Block filters to isolate and is slowly added to 14% sodium carbonate dissolution brown alga acid coagulum after brown alga acid coagulum and forms sodium alginate soln,
95% ethanol solution that 1.5 times (V/V) are added into sodium alginate solution precipitates sodium alginate, sodium alginate is filtered, 50
At DEG C after drying, crushing obtains sodium alginate finished product.
Step B, fiber producing processes are the same as embodiment 2.
Comparative example 3:
Step A is with embodiment 1, and fibre manufacture is to take to be dissolved in 100 for 10 grams of sodium alginate made from step A in step B
11% sodium alginate solution is obtained in gram aqueous solution containing sodium hydroxide 5%, a certain amount of aqueous sodium hypochlorite solution is added, makes it
Content reaches 0.1% in sodium alginate solution, the high-speed stirred at 50 DEG C, is filtered using 100 mesh filter cloths, then pass through spinning
Sodium alginate solution gel is expressed into the first coagulating bath in solidification and the second gelation and carries out ion exchange by screw rod, then
Obtained brown alga fiber is obtained into spinnable brown alga fibrous finished product by the processes such as washing, dry.First coagulating bath contains 68%
Ethyl alcohol, water and 1% cetyl chloride pyrroles, coagulation bath temperature are 40 DEG C, and drawing-off 130% obtains brown alga fiber, then
By brown alga fiber enter by the second gelation that 2.5% ethyl alcohol, 0.5% aqueous hydrochloric acid solution and 8% sodium chloride form carry out from
Son exchange, 40 DEG C of coagulation bath temperature, brown alga fiber is 80% in the multiple of the second gelation drawing-off, then the brown alga that will be obtained
Fiber obtains spinnable brown alga fibrous finished product by the processes such as washing, dry.
Fibre property made of testing, wherein the test method of swelling ability is fiber in 60 DEG C, the NaCl of 30%owf
There is maximum swelling performance when impregnating 10min in solution.Therefore, the variation of the energy of brown alga swelling ability before and after the processing is imitated
The verification test of fruit will carry out with this condition.
Table 1
Claims (1)
1. the manufacturing method of a main laver extract fiber, it is characterised in that:
Step A: seaweed extract extracts
(1) seaweed of selection is put into acetum and is impregnated, pulled seaweed out and drain away the water, then steam, steaming temperature 80-
100 DEG C, from water boiling 5-8 minutes spare, the seaweeds that will have been steamed of taking-up are dried to moisture≤11-13%；
(2) pressure 2.3-3min is tieed up under 1.1-1.4MPa pressure to pretreated seaweed and carries out Steam explosion treatment；
(3) enzymatic treatment: and then low-temperature cellulase is added in the product that step (2) obtains, in 25 DEG C~35 DEG C of water-bath
- 48h for 24 hours is digested,
(4) the water dilution relative to 11-15 times of seaweed dry weight is added after enzyme, in revolving speed is 2000- with tube centrifuge
It is centrifuged under the conditions of 15000r/min, realizes the separation of seaweed digestion slag and supernatant；
(5) the seaweed digestion slag after being centrifuged is mainly seaweed fiber, with the hydrogen peroxide drift relative to 15-20 times of solid-phase material dry weight
White, bleaching time 20-30min, temperature are 10-25 DEG C, are dried in vacuo at 50 DEG C after bleaching, crushing just obtains seaweed diet fibre
Tie up finished product；
(6) in supernatant main component be sodium alginate, pigment, iodine, mannitol, supernatant with salt acid for adjusting pH be 6-7 after plus
Enter the calcium chloride solution of the 10-15% of 0.25 times of volume, forms extract precipitating, calcium alginate and filtrate is obtained by filtration；
(7) calcium alginate is added in the hydrochloric acid solution of 5-9% at 25-40 DEG C and is acidified 15-20min, generate brown alga acid cure
Block filters to isolate and is slowly added to the sodium carbonate dissolution brown alga acid coagulum of 15-20% after brown alga acid coagulum to form sodium alginate molten
Liquid, 3-4 times of 90-95% ethanol solution is added into sodium alginate solution precipitates sodium alginate, filters sodium alginate, then
Through obtaining the sodium alginate finished product that content is 90 ± 1.09wt% with vacuum freeze drying, crushing；
Step B: manufacture fiber
It takes made from step A in 9-15 grams of the sodium alginate aqueous solution for being dissolved in the 80-100 grams of 2-5% containing sodium bicarbonate and obtains 8-
A certain amount of aqueous sodium hypochlorite solution is added in 11% sodium alginate solution, its content in sodium alginate solution is made to reach 0.05-
0.1%, the high-speed stirred at 50-100 DEG C is filtered using 100-150 mesh filter cloth, then by spinning screw that sodium alginate is molten
Lyogel is expressed into the first coagulating bath and carries out ion exchange, then the brown alga fiber that will be obtained in solidification and the second gelation
Spinnable brown alga fibrous finished product is obtained by washing, drying process.
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| CN108360087A (en) * | 2018-02-07 | 2018-08-03 | 湖州科博信息科技有限公司 | A kind of flexibility heatproof environment-protection fiber and its preparation process |
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