CN115074852A - Extraction, preparation and method of straw fiber powder - Google Patents
Extraction, preparation and method of straw fiber powder Download PDFInfo
- Publication number
- CN115074852A CN115074852A CN202210852466.9A CN202210852466A CN115074852A CN 115074852 A CN115074852 A CN 115074852A CN 202210852466 A CN202210852466 A CN 202210852466A CN 115074852 A CN115074852 A CN 115074852A
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- Prior art keywords
- straw
- solution
- fiber powder
- extraction
- preparation
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- 239000010902 straw Substances 0.000 title claims abstract description 52
- 239000000835 fiber Substances 0.000 title claims abstract description 34
- 239000000843 powder Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000000605 extraction Methods 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 238000009987 spinning Methods 0.000 claims abstract description 41
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229960000583 acetic acid Drugs 0.000 claims abstract description 18
- 239000012362 glacial acetic acid Substances 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 16
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 14
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000004202 carbamide Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 239000002244 precipitate Substances 0.000 claims abstract description 8
- 239000006228 supernatant Substances 0.000 claims abstract description 8
- 239000004627 regenerated cellulose Substances 0.000 claims abstract description 7
- 238000005185 salting out Methods 0.000 claims abstract description 7
- 239000011780 sodium chloride Substances 0.000 claims abstract description 7
- 238000005406 washing Methods 0.000 claims abstract description 7
- 239000008367 deionised water Substances 0.000 claims abstract description 4
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 4
- 238000004108 freeze drying Methods 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 230000005070 ripening Effects 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims description 55
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 229920000297 Rayon Polymers 0.000 claims description 6
- 230000007935 neutral effect Effects 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000000047 product Substances 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 5
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 4
- 230000002155 anti-virotic effect Effects 0.000 abstract description 4
- 230000003115 biocidal effect Effects 0.000 abstract description 4
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 230000002045 lasting effect Effects 0.000 abstract description 2
- 239000004480 active ingredient Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
- D01F2/08—Composition of the spinning solution or the bath
- D01F2/10—Addition to the spinning solution or spinning bath of substances which exert their effect equally well in either
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Abstract
The invention relates to the technical field of fiber powder preparation, in particular to an extraction, preparation and method of straw fiber powder, which comprises the following steps of crushing straws; adding straw scraps into a urea solution, washing with deionized water, filtering and draining; adding the straw scraps into a glacial acetic acid solution, centrifuging to obtain a supernatant, adding sodium chloride, and salting out to obtain a precipitate; dissolving the precipitate in a glacial acetic acid solution, centrifuging, dialyzing the supernatant with the glacial acetic acid solution, and freeze-drying to obtain a straw extract raw material; step five, mixing the straw extract raw material with regenerated cellulose spinning solution; step six, filtering, defoaming and ripening the mixed spinning solution, and then sending the mixed spinning solution to a spinning machine to form fine spinning tows; and step seven, crushing the fine spun tows to form straw fiber powder. The invention enables the obtained product to achieve the high-performance antibacterial effect, is lasting and effective, and simultaneously has the function type fiber powder material with multiple combinations of oxidation resistance, antibiosis, antivirus and the like.
Description
Technical Field
The invention relates to the technical field of fiber powder preparation, in particular to extraction, preparation and a method of straw fiber powder.
Background
It is becoming increasingly apparent that we are faced with an unprecedented challenge of meeting ever-increasing energy demands and protecting the environment. Plant fiber resources which are the first crop on the earth and which can be regenerated year by year are naturally attracting attention. The plant fiber resources mainly comprise two types of crop straws and forestry wastes, and the quantity of straw raw materials generated in China every year is huge and is estimated to be about billion tons. Most of these resources are not efficiently utilized and the conversion of plant fibers into industrial products represents a sustainable approach to meet the growing demand for fuels and chemical products, especially in view of the limited supply of mineral resources, the diminishing of petroleum resources and environmental concerns.
At present, it is still a problem to efficiently extract these three main chemical components from plant fibers as high value-added raw materials. This is due to the complex chemical structure of plant fibers and the difficulty in processing products that are not readily available in sufficient yield and commercial value. In the paper industry, for example, the value of hemicellulose and lignin is not utilized sufficiently, and only about 40% of the material is recovered in a usable form. Many separation processes for lignocellulosic feedstocks used to produce cellulosic ethanol ignore other possible uses of lignin and simply suggest its incineration for the recovery of heat energy. These modes of producing a single bulk product have low economic benefits due to insufficient utilization of plant fiber raw materials, thereby limiting the development of related industries. Biorefinery is similar to petroleum refining, is a process of comprehensively utilizing components of plant fiber raw materials, produces a series of high value-added products by processing, grading and converting the plant fiber raw materials, and is a promising approach, so that the plant fiber industry is more commercially attractive. However, for a long time, the traditional plant fiber extraction method generally adopts a strong acid and strong alkali process, so that the energy consumption is high, the pollution is large, the extraction rate is low, and the resource is seriously wasted.
Disclosure of Invention
The invention provides an extraction, preparation and method of straw fiber powder, which combines the active ingredient extract of the primary plant and the macromolecular cellulose structure, so that the obtained product achieves the high-performance antibacterial effect, is durable and effective, and has the function type fiber powder material with multiple combinations of oxidation resistance, antibiosis, antivirus and the like.
In order to achieve the purpose, the invention provides the following technical scheme: an extraction, preparation and method of straw fiber powder comprises the following steps:
the method comprises the following steps of firstly, cleaning, drying and crushing the straws in sequence to obtain straw scraps;
step two, adding the straw scraps into a urea solution, soaking and stirring, washing with deionized water until a washing solution is neutral, filtering, and fully draining;
step three, adding the treated straw scraps into a glacial acetic acid solution, centrifuging again to obtain a supernatant, adding sodium chloride for salting out, centrifuging again after a straw scrap extract is precipitated, and obtaining a precipitate;
dissolving the precipitate in a glacial acetic acid solution, performing centrifugal treatment, taking supernatant, dialyzing with the glacial acetic acid solution until chloride ions do not exist in the dialysate and the dialysate is neutral, and performing freeze drying to obtain a straw extract raw material;
step five, uniformly mixing the straw extract raw material with regenerated cellulose spinning solution to form mixed spinning solution;
step six, filtering, defoaming and ripening the mixed spinning solution, then sending the mixed spinning solution to a spinning machine, extruding the mixed spinning solution from spinneret orifices of a spinneret of the spinning machine through a metering pump, and forming fine spinning tows after solidification and drafting;
and seventhly, cutting and crushing the fine spun tows through a crushing device to form the straw fiber powder.
Preferably, in the third step, the ratio of the straw scraps to the glacial acetic acid solution is 1: 5-9.
Preferably, the concentration of the urea solution in the second step is 0.2mol/L, and the urea solution is soaked for 5 hours.
Preferably, the concentration of the glacial acetic acid solution in the third step is 0.4mol/L, and the extraction is fully carried out for 6 hours.
Preferably, the centrifugal treatment time in the third step is 30min, and the centrifugal rotating speed is 7200 r/min; the sodium chloride salting-out time is 6 h.
Preferably, in the fifth step, the content of the straw extract raw material in the spinning solution is 13 wt% -18 wt%, the regenerated cellulose spinning solution is a viscose spinning solution, and the concentration of the viscose spinning solution is 30%.
Preferably, in the sixth step, the filament bundle is further washed by an aqueous solution of sodium hydroxide; then the water is washed and dried by hot water.
The invention has the beneficial effects that: the combination of the active ingredient extract of the primary plant and the structure of the macromolecular cellulose enables the obtained product to achieve the high-performance antibacterial effect, and the obtained product is durable and effective and has the function type fiber powder material with multiple combinations of oxidation resistance, antibiosis, antivirus and the like.
Detailed Description
The technical solutions of the present invention are described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
An extraction, preparation and method of straw fiber powder comprises the following steps:
the method comprises the following steps of firstly, cleaning, drying and crushing the straws in sequence to obtain straw scraps;
step two, adding the straw scraps into a urea solution, soaking and stirring, washing with deionized water until a washing solution is neutral, filtering, and fully draining; the concentration of the urea solution is 0.2mol/L, and the urea solution is soaked for 5 hours.
Adding the treated straw scraps into a glacial acetic acid solution, wherein the material-liquid ratio of the straw scraps to the glacial acetic acid solution is 1: 5-9, the concentration of the glacial acetic acid solution is 0.4mol/L, fully extracting for 6 hours, then performing centrifugal treatment to obtain supernatant, adding sodium chloride for salting out, performing centrifugal treatment after a straw scraps extract is precipitated, and taking precipitate, wherein the centrifugal treatment time is 30min, and the centrifugal rotation speed is 7200 r/min; the sodium chloride salting-out time is 6 hours;
dissolving the precipitate in a glacial acetic acid solution, performing centrifugal treatment, taking supernatant, dialyzing with the glacial acetic acid solution until chloride ions do not exist in the dialyzate and the dialyzate is neutral, and performing freeze drying to obtain a straw extract raw material;
step five, uniformly mixing the straw extract raw material with regenerated cellulose spinning solution to form mixed spinning solution; the content of the straw extract raw material in the spinning solution is 13-18 wt%, the regenerated cellulose spinning solution is viscose spinning solution, and the concentration of the viscose spinning solution is 30%.
Step six, filtering, defoaming and ripening the mixed spinning solution, then sending the mixed spinning solution to a spinning machine, extruding the mixed spinning solution from spinneret orifices of a spinneret of the spinning machine through a metering pump, and forming fine spinning tows after solidification and drafting; the filament bundle was also washed with aqueous sodium hydroxide; then the water is washed and dried by hot water.
And seventhly, cutting and crushing the fine spun tows through a crushing device to form the straw fiber powder.
The method combines the active ingredient extract of the primary plant and the macromolecular cellulose structure, so that the obtained product achieves the high-performance antibacterial effect, is lasting and effective, and simultaneously has the function type fiber powder material with multiple combinations of oxidation resistance, antibiosis, antivirus and the like.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. An extraction, preparation and method of straw fiber powder is characterized by comprising the following steps:
the method comprises the following steps of firstly, cleaning, drying and crushing the straws in sequence to obtain straw scraps;
step two, adding the straw scraps into a urea solution, soaking and stirring, washing with deionized water until a washing solution is neutral, filtering, and fully draining;
step three, adding the treated straw scraps into a glacial acetic acid solution, centrifuging again to obtain a supernatant, adding sodium chloride for salting out, centrifuging again after a straw scrap extract is precipitated, and obtaining a precipitate;
dissolving the precipitate in a glacial acetic acid solution, performing centrifugal treatment, taking supernatant, dialyzing with the glacial acetic acid solution until chloride ions do not exist in the dialysate and the dialysate is neutral, and performing freeze drying to obtain a straw extract raw material;
step five, uniformly mixing the straw extract raw material with regenerated cellulose spinning solution to form mixed spinning solution;
step six, filtering, defoaming and ripening the mixed spinning solution, then sending the mixed spinning solution to a spinning machine, extruding the mixed spinning solution from spinneret orifices of a spinneret of the spinning machine through a metering pump, and forming fine spinning tows after solidification and drafting;
and seventhly, cutting and crushing the fine spun tows through a crushing device to form the straw fiber powder.
2. The extraction, preparation and method of straw fiber powder as claimed in claim 1, wherein: in the third step, the ratio of the straw scraps to the glacial acetic acid solution is 1: 5-9.
3. The extraction, preparation and method of straw fiber powder as claimed in claim 1, wherein: and the concentration of the urea solution in the step two is 0.2mol/L, and the urea solution is soaked for 5 hours.
4. The extraction, preparation and method of straw fiber powder as claimed in claim 1, wherein: the concentration of the glacial acetic acid solution in the third step is 0.4mol/L, and the full extraction is carried out for 6 h.
5. The extraction, preparation and method of straw fiber powder as claimed in claim 4, wherein: the centrifugal treatment time in the third step is 30min, and the centrifugal rotating speed is 7200 r/min; the sodium chloride salting-out time is 6 hours.
6. The extraction, preparation and method of straw fiber powder as claimed in claim 1, wherein: in the fifth step, the content of the straw extract raw material in the spinning solution is 13 wt% -18 wt%, the regenerated cellulose spinning solution is a viscose spinning solution, and the concentration of the viscose spinning solution is 30%.
7. The extraction, preparation and method of straw fiber powder as claimed in claim 1, wherein: in the sixth step, the filament bundle is further washed by an aqueous solution of sodium hydroxide; then the water is washed and dried by hot water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210852466.9A CN115074852A (en) | 2022-07-19 | 2022-07-19 | Extraction, preparation and method of straw fiber powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210852466.9A CN115074852A (en) | 2022-07-19 | 2022-07-19 | Extraction, preparation and method of straw fiber powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115074852A true CN115074852A (en) | 2022-09-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210852466.9A Pending CN115074852A (en) | 2022-07-19 | 2022-07-19 | Extraction, preparation and method of straw fiber powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115074852A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146591A (en) * | 2011-03-10 | 2011-08-10 | 武汉纺织大学 | Method for preparing regenerated straw fiber by directly spinning straw |
| CN111349976A (en) * | 2020-04-14 | 2020-06-30 | 江苏康溢臣生命科技有限公司 | Preparation method of regenerated cellulose fiber extracted from lotus plants |
-
2022
- 2022-07-19 CN CN202210852466.9A patent/CN115074852A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146591A (en) * | 2011-03-10 | 2011-08-10 | 武汉纺织大学 | Method for preparing regenerated straw fiber by directly spinning straw |
| CN111349976A (en) * | 2020-04-14 | 2020-06-30 | 江苏康溢臣生命科技有限公司 | Preparation method of regenerated cellulose fiber extracted from lotus plants |
Non-Patent Citations (1)
| Title |
|---|
| 杨治广: "《固体废物处理与处置》", pages: 277 - 280 * |
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