CN116512370B - Bamboo powder with mildew-proof and antibacterial functions and preparation method thereof - Google Patents
Bamboo powder with mildew-proof and antibacterial functions and preparation method thereof Download PDFInfo
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- CN116512370B CN116512370B CN202310298946.XA CN202310298946A CN116512370B CN 116512370 B CN116512370 B CN 116512370B CN 202310298946 A CN202310298946 A CN 202310298946A CN 116512370 B CN116512370 B CN 116512370B
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- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 133
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 133
- 241001330002 Bambuseae Species 0.000 title claims abstract description 133
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 133
- 239000011425 bamboo Substances 0.000 title claims abstract description 133
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 70
- 239000000843 powder Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000003814 drug Substances 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 101710121765 Endo-1,4-beta-xylanase Proteins 0.000 claims abstract description 15
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000004327 boric acid Substances 0.000 claims abstract description 12
- 238000002791 soaking Methods 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 8
- 238000005520 cutting process Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000005406 washing Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 150000003863 ammonium salts Chemical group 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 239000003242 anti bacterial agent Substances 0.000 claims description 5
- 239000012153 distilled water Substances 0.000 claims description 5
- 229910021389 graphene Inorganic materials 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 239000003899 bactericide agent Substances 0.000 claims description 3
- 235000010265 sodium sulphite Nutrition 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- 229920001661 Chitosan Polymers 0.000 claims description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 2
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 2
- 239000004571 lime Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000011282 treatment Methods 0.000 abstract description 7
- 239000003292 glue Substances 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 238000004332 deodorization Methods 0.000 abstract description 3
- 238000005470 impregnation Methods 0.000 abstract description 3
- 238000009423 ventilation Methods 0.000 abstract description 3
- 239000000835 fiber Substances 0.000 description 11
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 6
- 102000004190 Enzymes Human genes 0.000 description 4
- 108090000790 Enzymes Proteins 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 244000063299 Bacillus subtilis Species 0.000 description 1
- 235000014469 Bacillus subtilis Nutrition 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 241000191967 Staphylococcus aureus Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229930003811 natural phenol Natural products 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K9/00—Chemical or physical treatment of reed, straw, or similar material
- B27K9/002—Cane, bamboo
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27J—MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS
- B27J1/00—Mechanical working of cane or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/04—Impregnating in open tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/04—Combined bleaching or impregnating and drying of wood
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
- B27L11/06—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood powder or sawdust
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Forests & Forestry (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses bamboo powder with mildew-proof and antibacterial functions and a preparation method thereof, wherein the method comprises the following steps: (1) Cutting the bamboo chips after removing impurities into bamboo chips, then placing the bamboo chips in a closed pressure container, adding a glue solution and xylanase for degumming treatment, taking out the bamboo chips, cooling the bamboo chips to normal temperature, and sequentially crushing and washing the bamboo chips to obtain degummed bamboo chips; (2) Soaking degummed bamboo chips obtained in the step (1) in an antibacterial liquid medicine at 60-80 ℃ for 1-2h, adding boric acid to form nanogel, soaking for 1-2h, and finally sequentially drying and crushing to obtain the bamboo powder with the mildew-proof antibacterial function. The invention also comprises the bamboo powder prepared by the method. The bamboo powder with good moisture absorption, ventilation, mildew resistance, antibacterial, deodorization and processing performances is obtained through the treatments of impurity removal, degumming, antibacterial impregnation and the like, and the problems that natural antibacterial components are completely destroyed, the content of the antibacterial components is low and the like in the prior art are effectively solved.
Description
Technical Field
The invention relates to the technical field of bamboo fiber processing, in particular to bamboo powder with mildew-proof and antibacterial functions and a preparation method thereof.
Background
China is the most abundant world of bamboo resources, more than 500 kinds of bamboo are planted, and the area, accumulation and consumption are the first in the world. According to statistics, the area of the existing bamboo forest in the whole country is 700 tens of thousands of hectares, the annual felling amount of the bamboo wood is more than 3000 tens of thousands of tons, and the application of the bamboo wood relates to more than ten industries such as daily necessities, medicines, artware, building industry, textile industry, paper industry, material industry and the like, and the annual output value of the bamboo industry exceeds 3000 hundred million yuan.
Bamboo contains abundant cellulose, natural phenols and other substances, so that the bamboo powder has good hygroscopicity, air permeability and antibacterial property, and is widely applied to composite materials due to wide sources and low price. However, the bamboo powder at the present stage is mainly used after natural bamboo is dried and directly pulverized, or is subjected to cutting, deep degumming, crushing, washing, drying and pulverizing, but the natural antibacterial components in the bamboo are basically and completely destroyed.
The antibacterial property of bamboo is derived from the unique fiber structure and the bamboo quinone component in the fiber, and in order to expand the application field of bamboo, and exert the relevant excellent properties of bamboo, the production of processed composite materials is urgently needed to provide a method capable of effectively retaining functional components.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide the bamboo powder with the mildew-proof and antibacterial functions and the preparation method thereof, and the bamboo powder with good moisture absorption, ventilation, mildew resistance, antibacterial, deodorization and processing performances is obtained through the treatments of impurity removal, degumming, antibacterial impregnation and the like, so that the problems that natural antibacterial components are completely destroyed, the antibacterial component content is low and the like in the prior art are effectively solved.
The technical scheme for solving the technical problems is as follows: the preparation method of the bamboo powder with the mildew-proof and antibacterial functions comprises the following steps:
(1) Cutting the bamboo chips with the impurities removed into bamboo chips with the length less than or equal to 10mm and the width less than or equal to 6mm, then placing the bamboo chips in a closed pressure container, adding a glue solution and xylanase for degumming treatment, taking out the bamboo chips, cooling the bamboo chips to normal temperature, and sequentially crushing and washing the bamboo chips to obtain degummed bamboo chips;
(2) Soaking degummed bamboo chips obtained in the step (1) in an antibacterial liquid medicine at 60-80 ℃ for 1-2h, adding boric acid to form nanogel, soaking for 1-2h, and finally sequentially drying and crushing to obtain the bamboo powder with the mildew-proof antibacterial function.
Further, in the step (1), the addition amount of the degumming agent is 3-8wt% of the bamboo chips, and the addition amount of the xylanase is 50-100g/t of the bamboo chips.
Further, xylanase has an enzyme activity of 10 ten thousand u/g and a pH of 6.5-10.5.
Further, the degumming agent is at least one of lime, caustic soda and sodium sulfite.
Further, in the step (1), degumming is carried out for 3-12 hours under the conditions of degumming liquid-solid ratio of 4-8:1 and 150-500 kPa.
Further, in the step (1), the mixture is crushed until the length is less than or equal to 3mm and the width is less than or equal to 1mm, and the mixture is washed with water at 25-80 ℃ until the pH is 7-8.
Further, in the step (2), the antibacterial liquid medicine comprises the following components in parts by weight: 1-3 parts of antibacterial agent, 10-20 parts of polyvinyl alcohol and 200 parts of distilled water.
Further, the antibacterial agent is at least one of nanoscale titanium dioxide, a biquaternary ammonium salt bactericide, nano silver, chitosan and graphene oxide.
Further, in the step (2), the mass ratio of the degummed bamboo chips to the antibacterial liquid medicine is 100:211-223; the mass ratio of the degummed bamboo chips to the boric acid is 100:0.5-1.
Further, in the step (2), the water content is dried to be less than or equal to 5 percent, and the powder is crushed to 100 to 150 meshes.
The bamboo powder with the mildew-proof and antibacterial functions is prepared by the preparation method of the bamboo powder with the mildew-proof and antibacterial functions.
The invention has the following beneficial effects:
1. The bamboo powder with good moisture absorption, ventilation, mildew resistance, antibacterial, deodorization and processing performances is obtained through the treatments of impurity removal, degumming, antibacterial impregnation and the like, and the problems that natural antibacterial components are completely destroyed, the content of the antibacterial components is low and the like in the prior art are effectively solved.
2. The bamboo pole is cut into small bamboo chips, the sugar which is easy to mildew is removed through degumming treatment, but the bamboo fibril structure and antibacterial components in the bamboo fibril are effectively reserved, nano titanium dioxide, a biquaternary ammonium salt bactericide, nano silver, graphene oxide and other antibacterial agents are used for assisting in carrying out dipping treatment, and then boric acid is used for promoting the condensation of polyvinyl alcohol so as to form nano antibacterial gel coating on the surface and the inside of the bamboo fibers, and then the bamboo fibers are processed into small bamboo powder, so that the bamboo powder has good composite processability, can be used as a filler of a composite material, and has excellent antibacterial performance and the like.
3. The invention adopts enzyme-alkali synergistic degumming to reduce the alkali consumption, shorten the degumming time and reduce the pollutant discharge, effectively reserves the bamboo quinone component in the bamboo fiber while reducing the time and alkali cost, combines the nano structure of the bamboo fiber, forms an antibacterial gel coated fiber structure through the synergistic effect of a plurality of antibacterial components, ensures that the bamboo has continuous and stable antibacterial performance, ensures that the antibacterial rate of the bamboo powder obtained after drying for 15 days can reach 86.1 percent for escherichia coli, 95.3 percent for staphylococcus aureus and 87.3 percent for bacillus subtilis.
Detailed Description
The principles and features of the present invention are described below with examples given for the purpose of illustration only and are not intended to limit the scope of the invention. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
Example 1
A preparation method of bamboo powder with mildew-proof and antibacterial functions comprises the following steps:
(1) Cutting bamboo chips with the length of 10mm and the width of 6mm after removing impurities into bamboo chips with the length of 10mm and the width of 6mm, then placing the bamboo chips into a closed pressure container, adding a glue agent (caustic soda) and xylanase, degumming for 10 hours under the condition of degumming liquid-solid ratio of 6:1 and 450kPa, taking out the bamboo chips, cooling the bamboo chips to normal temperature, crushing the bamboo chips to the length of 3mm and the width of 1mm, and cleaning the bamboo chips with water at 60 ℃ until the pH value is 7.5 to obtain degummed bamboo chips; the addition amount of the degumming agent is 6wt% of the bamboo chips, and the addition amount of xylanase is 50g/t of the bamboo chips; xylanase enzyme activity 10 ten thousand u/g, pH 9.5;
(2) Soaking degummed bamboo chips obtained in the step (1) in an antibacterial liquid medicine at 70 ℃ for 1h, adding boric acid to form nanogel, soaking for 1h, finally drying until the water content is 5%, and crushing to 150 meshes to obtain the bamboo powder with the mildew-proof antibacterial function. The antibacterial liquid medicine comprises the following components in parts by weight: 1 part of nano-scale titanium dioxide, 1 part of biquaternary ammonium salt, 10 parts of polyvinyl alcohol and 200 parts of distilled water; the mass ratio of the degummed bamboo chips to the antibacterial liquid medicine is 100:212; the mass ratio of the degummed bamboo chips to the boric acid is 100:0.5.
Example 2
A preparation method of bamboo powder with mildew-proof and antibacterial functions comprises the following steps:
(1) Cutting bamboo chips with the length of 10mm and the width of 6mm after removing impurities into bamboo chips with the length of 10mm and the width of 6mm, then placing the bamboo chips into a closed pressure container, adding a glue agent (caustic soda) and xylanase, degumming for 8 hours under the condition of degumming liquid-solid ratio of 6:1 and 500kPa, taking out the bamboo chips, cooling the bamboo chips to normal temperature, crushing the bamboo chips to the length of 3mm and the width of 1mm, and cleaning the bamboo chips with water at 60 ℃ until the pH value is 7.5 to obtain degummed bamboo chips; the addition amount of the degumming agent is 6wt% of the bamboo chips, and the addition amount of xylanase is 50g/t of the bamboo chips; xylanase enzyme activity 10 ten thousand u/g, pH 10;
(2) Soaking degummed bamboo chips obtained in the step (1) in an antibacterial liquid medicine at 70 ℃ for 2 hours, adding boric acid to form nanogel, soaking for 2 hours, finally drying until the water content is 5%, and crushing to 150 meshes to obtain the bamboo powder with the mildew-proof antibacterial function. The antibacterial liquid medicine comprises the following components in parts by weight: 1 part of graphene oxide, 1 part of biquaternary ammonium salt, 15 parts of polyvinyl alcohol and 200 parts of distilled water; the mass ratio of the degummed bamboo chips to the antibacterial liquid medicine is 100:217; the mass ratio of the degummed bamboo chips to the boric acid is 100:0.5.
Example 3
A preparation method of bamboo powder with mildew-proof and antibacterial functions comprises the following steps:
(1) Cutting bamboo chips with the length of 10mm and the width of 6mm after removing impurities into bamboo chips with the length of 10mm and the width of 6mm, then placing the bamboo chips into a closed pressure container, adding a glue solution (sodium sulfite) and xylanase, degumming for 10 hours under the condition of degumming liquid-solid ratio of 8:1 and 500kPa, taking out the bamboo chips, cooling the bamboo chips to normal temperature, crushing the bamboo chips to the length of 3mm and the width of 1mm, and cleaning the bamboo chips with water at 80 ℃ until the pH value is 7.5 to obtain degummed bamboo chips; the addition amount of the degumming agent is 8wt% of the bamboo chips, and the addition amount of xylanase is 80g/t of the bamboo chips; xylanase enzyme activity 10 ten thousand u/g, pH 10;
(2) Soaking degummed bamboo chips obtained in the step (1) in an antibacterial liquid medicine at 70 ℃ for 2 hours, adding boric acid to form nanogel, soaking for 2 hours, finally drying until the water content is 5%, and crushing to 150 meshes to obtain the bamboo powder with the mildew-proof antibacterial function. The antibacterial liquid medicine comprises the following components in parts by weight: 2 parts of graphene oxide, 2 parts of biquaternary ammonium salt, 16 parts of polyvinyl alcohol and 200 parts of distilled water; the mass ratio of the degummed bamboo chips to the antibacterial liquid medicine is 100:220; the mass ratio of the degummed bamboo chips to the boric acid is 100:0.6.
The antibacterial test was carried out on the bamboo powder with the mildew-proof and antibacterial functions obtained in examples 1-3, and the results are shown in Table 1.
Table 1 statistics of bacteriostasis of bamboo powder
As can be seen from Table 1, the preparation method of the invention can effectively retain the bamboo quinone component in the bamboo fiber, and combines the nano structure of the bamboo fiber to form an antibacterial gel coated fiber structure through the synergistic effect of a plurality of antibacterial components, so that the bamboo has continuous and stable antibacterial performance.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (7)
1. The preparation method of the bamboo powder with the mildew-proof and antibacterial functions is characterized by comprising the following steps of:
(1) Cutting the bamboo chips with the length less than or equal to 10mm and the width less than or equal to 6mm after removing impurities into bamboo chips with the length less than or equal to 6mm, then placing the bamboo chips in a closed pressure container, adding a degumming agent and xylanase to degumm for 3-12h under the condition of a degumming liquid-solid ratio of 4-8:1 and 150-500kPa, taking out, cooling to normal temperature, and sequentially crushing and washing to obtain degummed bamboo chips; the degumming agent is at least one of lime, caustic soda and sodium sulfite;
(2) Soaking degummed bamboo chips obtained in the step (1) in an antibacterial liquid medicine at 60-80 ℃ for 1-2h, adding boric acid to form nanogel, soaking for 1-2h, and finally sequentially drying and crushing to obtain bamboo powder with mildew-proof and antibacterial functions; the antibacterial liquid medicine comprises the following components in parts by weight: 1-3 parts of antibacterial agent, 10-20 parts of polyvinyl alcohol and 200 parts of distilled water.
2. The method for producing bamboo powder with mildew-proof and antibacterial functions according to claim 1, wherein in the step (1), the degumming agent is added in an amount of 3-8wt% of the bamboo chips, and the xylanase is added in an amount of 50-100g/t of the bamboo chips.
3. The method for preparing bamboo powder with mildew-proof and antibacterial functions according to claim 1, wherein in the step (1), the bamboo powder is crushed to a length of less than or equal to 3mm and a width of less than or equal to 1mm, and is washed with water at 25-80 ℃ until the pH is 7-8.
4. The method for preparing bamboo powder with mildew-proof and antibacterial functions according to claim 1, wherein the antibacterial agent is at least one of nanoscale titanium dioxide, a biquaternary ammonium salt bactericide, nano silver, chitosan and graphene oxide.
5. The method for preparing bamboo powder with mildew-proof and antibacterial functions according to claim 1, wherein in the step (2), the mass ratio of the degummed bamboo chips to the antibacterial liquid medicine is 100:211-223; the mass ratio of the degummed bamboo chips to the boric acid is 100:0.5-1.
6. The method for preparing bamboo powder with mildew-proof and antibacterial functions according to claim 1, wherein in the step (2), the bamboo powder is dried until the water content is less than or equal to 5%, and is crushed to 100-150 meshes.
7. The bamboo powder with mildew-proof and antibacterial functions according to any one of claims 1 to 6.
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| JP2003231607A (en) * | 2002-02-05 | 2003-08-19 | Hosoda Shc:Kk | Mangosteen extract and antimicrobial deodorant containing the same |
| CN102978188A (en) * | 2012-08-06 | 2013-03-20 | 江南大学 | Wide pH action range xylanase and applications thereof |
| CN106012043A (en) * | 2016-07-12 | 2016-10-12 | 宜宾长顺竹木产业有限公司 | Degumming and bleaching process of natural bamboo fiber |
| CN106696030A (en) * | 2016-12-16 | 2017-05-24 | 福建神采新材料科技有限公司 | Technology for soaking bamboo to reduce bamboo gadolinium lose |
| CN107268088A (en) * | 2017-05-19 | 2017-10-20 | 傲丝生态（中国）有限公司 | A kind of preparation method of high-performance bamboo fibre |
| CN107523984A (en) * | 2017-09-25 | 2017-12-29 | 安徽华祺汽车装饰有限公司 | A kind of production method of bamboo fibre |
| CN107557880A (en) * | 2017-11-08 | 2018-01-09 | 唐卫兵 | A kind of preparation method of antiallergy face liber |
| CN109749097A (en) * | 2019-01-17 | 2019-05-14 | 中南林业科技大学 | The preparation method of environmentally friendly quick selfreparing hydrogel |
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