CN113047033B - Method for improving printing and dyeing chemical properties of bamboo shoot shell fibers - Google Patents
Method for improving printing and dyeing chemical properties of bamboo shoot shell fibers Download PDFInfo
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- 239000000835 fiber Substances 0.000 title claims abstract description 186
- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 137
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 137
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 137
- 241001330002 Bambuseae Species 0.000 title claims abstract description 133
- 239000011425 bamboo Substances 0.000 title claims abstract description 133
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000000126 substance Substances 0.000 title claims abstract description 21
- 238000004043 dyeing Methods 0.000 title claims abstract description 19
- 238000011282 treatment Methods 0.000 claims abstract description 40
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 35
- 238000001035 drying Methods 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000002791 soaking Methods 0.000 claims abstract description 30
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000003513 alkali Substances 0.000 claims abstract description 24
- 238000009835 boiling Methods 0.000 claims abstract description 23
- 239000002253 acid Substances 0.000 claims abstract description 21
- 239000011734 sodium Substances 0.000 claims abstract description 17
- 235000019830 sodium polyphosphate Nutrition 0.000 claims abstract description 16
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 238000010009 beating Methods 0.000 claims abstract description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 10
- 238000010411 cooking Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000000243 solution Substances 0.000 description 28
- 230000004580 weight loss Effects 0.000 description 16
- 238000004061 bleaching Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 13
- 239000004753 textile Substances 0.000 description 11
- 238000005406 washing Methods 0.000 description 11
- 230000008859 change Effects 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 8
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 8
- 239000005708 Sodium hypochlorite Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 238000005303 weighing Methods 0.000 description 7
- 239000007844 bleaching agent Substances 0.000 description 6
- 238000011161 development Methods 0.000 description 5
- 239000004744 fabric Substances 0.000 description 5
- 241000209128 Bambusa Species 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000000084 colloidal system Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- IAZSXUOKBPGUMV-UHFFFAOYSA-N 1-butyl-3-methyl-1,2-dihydroimidazol-1-ium;chloride Chemical compound [Cl-].CCCC[NH+]1CN(C)C=C1 IAZSXUOKBPGUMV-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000004115 Sodium Silicate Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 3
- 229920005610 lignin Polymers 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 3
- 229910052911 sodium silicate Inorganic materials 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Natural products OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000009990 desizing Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000009896 oxidative bleaching Methods 0.000 description 2
- 239000000575 pesticide Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000004114 Ammonium polyphosphate Substances 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 229920001410 Microfiber Polymers 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- 235000019826 ammonium polyphosphate Nutrition 0.000 description 1
- 229920001276 ammonium polyphosphate Polymers 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 239000003658 microfiber Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- -1 oxalic acid amine Chemical class 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/51—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
- D06M11/55—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts
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- 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
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
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- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with hydrogen peroxide or peroxides of metals; with persulfuric, permanganic, pernitric, percarbonic acids or their salts
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- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/51—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
- D06M11/55—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts
- D06M11/56—Sulfates or thiosulfates other than of elements of Groups 3 or 13 of the Periodic Table
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- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/68—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof
- D06M11/70—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof with oxides of phosphorus; with hypophosphorous, phosphorous or phosphoric acids or their salts
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- D06M11/68—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof
- D06M11/72—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof with metaphosphoric acids or their salts; with polyphosphoric acids or their salts; with perphosphoric acids or their salts
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- D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
- D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
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- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/35—Heterocyclic compounds
- D06M13/352—Heterocyclic compounds having five-membered heterocyclic rings
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- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
The invention relates to the technical field of bamboo shoot shell fiber treatment, in particular to a method for improving the printing and dyeing chemical property of bamboo shoot shell fibers, which comprises the steps of boiling and soaking the bamboo shoot shells in boiling water, and adding Na 2 SiO 3 Soaking the bamboo shoot shell fibers in the mixed acid solution at normal temperature; preparing, soaking bamboo shoot shell fiber in C at normal temperature 8 H 15 ClN 2 Treating in solution; naOH and Na are adopted 2 SiO 3 Sodium polyphosphate and Na 2 S 2 O 3 Is subjected to primary alkali boiling treatment; naOH and Na are adopted 2 SiO 3 And a mixed alkali solution of sodium polyphosphate is subjected to secondary alkali boiling treatment; and then carrying out fiber beating treatment, hydrogen peroxide soaking, sulfuric acid solution cleaning and pure water cleaning, and drying to obtain the modified bamboo shoot shell fiber. The invention effectively improves the printing and dyeing characteristics of the bamboo shoot shell fiber, has strong practicability and has wide market prospect.
Description
Technical Field
The invention relates to the technical field of bamboo fiber treatment, in particular to a method for improving printing and dyeing chemical properties of bamboo shoot shell fibers.
Background
With the improvement of scientific technology and living standard of people, various types of textile fibers with different properties are utilized to better serve human beings, and deep and multi-aspect research on raw materials of the textile fibers is needed, so that more and better novel textile materials are developed.
The textile fabric not only has toughness, water absorption and water resistance, but also is easy to dye, the dyeing process is resistant to treatment in the dyeing process, and the fibers are treated by acid-base and other treatments
The bamboo shoot shells are the outer layers of the bamboo shoots, play a role in protecting the bamboo shoots, and the bamboo resources in China are quite large, so that the bamboo shoot shells can be utilized, and the bamboo shoot shells are beneficial to resources and environment. Bamboo shoot shells are byproducts in the growth process of bamboos, most of bamboos grow in mountain areas and are less polluted by pesticides and other harmful substances, and the bamboos have antibacterial property, so that the bamboos do not need pesticides in the growth process, and basically are not polluted, and the bamboo shoot shell fiber resources become green and environment-friendly raw materials. From the aspect of ecological textile development, the bamboo shoot shell fiber does not depend on petroleum like chemical fiber, but is shifted to natural resources with low price and infinite circulation. Compared with viscose fibers taking cotton short fibers or wood as raw materials, the development of the bamboo shoot shell fibers can make up for the dilemma that the raw materials are gradually reduced due to the reduction of cotton fields and diversify the raw materials. In addition, the existing production process and equipment of bast fibers are very mature, the production of the bamboo shoot shell fibers is similar to that of bast fibers, and the development of the bamboo shoot shell fibers based on the bast production process is relatively easy and has low cost.
The bamboo shoot shell is a plant resource with very wide application, is widely applied to our life and production, and has good economic benefit, social benefit and ecological benefit. In addition, the growth of the bamboo shoot shells is fast, the bamboo shoot shells are not easy to damage, and the production speed and the large amount of the bamboo shoot shells are advantages for the bamboo shoot shells, and the price is relatively low, so that the bamboo shoot shells are favorable for large-scale purchase and storage. Along with the progress of scientific technology, the utilization of bamboo shoot shells has been remarkably developed. However, the utilization rate is low, and most of bamboo shoot shells do not find the true utilization points of the bamboo shoot shells, so that a great part of bamboo shoot shell resources still need to be developed.
In recent decades, china has improved the utilization of bamboo shoot shells greatly, but the mode is still very traditional, the added value of products is not high, and the main problems at present are as follows: (1) The utilization degree of the bamboo shoot shells is low, so that the resources of the bamboo shoot shells cannot be fully developed and applied; (2) The processing technology of the bamboo shoot shells is simple and behind, and the traditional application field cannot be broken through; (3) The production mode of the bamboo shoot shells is behind, only small-sized processing is performed, and large-scale industrialization cannot be formed.
Most of the raw materials of cellulose fibers are limited in acquisition, and if the abundant resource of the bamboo shoot shells is applied to the production of textile materials, the phenomenon of lack of the raw materials of the textile fibers can be greatly and effectively solved, and the contradiction between the environment and the development of textile industry is relieved.
Disclosure of Invention
In order to solve the technical problem that the chemical property of the bamboo shoot shell fiber is not strong in the spinning process, a method for modifying and degumming the bamboo shoot shell fiber is provided, which specifically comprises the following steps:
(1) soaking bamboo shoot shell in boiling water, adding Na 2 SiO 3 Draining to obtain bamboo shoot shell fiber;
(2) the final concentration of the pre-soaked mixed acid is as follows: h 2 SO 4 0.92～3.68g/L，H 3 PO 4 0.25-0.98 g/L of mixed acid solution, and soaking the bamboo shoot shell fibers in the mixed acid solution at normal temperature;
③C 8 H 15 ClN 2 solution treatment: preparing C with concentration of 0.6-2% 8 H 15 ClN 2 Acetone solution, soaking the bamboo shoot shell fiber at normal temperature;
(4) one time of alkali boiling, namely adopting NaOH and Na 2 SiO 3 Sodium polyphosphate and Na 2 S 2 O 3 Is treated by the mixed alkali solution;
(5) and (3) secondary alkaline cooking: naOH and Na are adopted 2 SiO 3 And a mixed alkali solution of sodium polyphosphate;
(6) the bamboo shoot shell fiber is obtained through fiber beating treatment, hydrogen peroxide soaking, sulfuric acid solution cleaning, pure water cleaning and drying in sequence.
Further, in the primary alkali boiling, naOH is 5-14 g/L, na 2 SiO 3 10-30 g/L, 0.5-3 g/L sodium polyphosphate, na 2 S 2 O 3 0.2～2g/L。
Further, in the secondary alkaline cooking, naOH is 5-14 g/L, na 2 SiO 3 10-30 g/L, and 0.5-3 g/L of sodium polyphosphate.
Further, the treatment time of the primary alkali boiling and the secondary alkali boiling is 0.5-2 h, and the treatment temperature is 95-100 ℃.
Further, in the step (1), the Na 2 SiO 3 The mass ratio of the added materials is 0.2-2%.
Further, the bath ratio of the steps (2), (3), (4) and (5) is 1:10-1:20.
Further, the hydrogen peroxide soaking is specifically carried out by adopting H with the concentration of 2-5% 2 0 2 Soaking for 20-50 min.
Further, the sulfuric acid solution is specifically used for cleaning by 5-12 g/L H 2 SO 4 Washing with aqueous solution, wherein the bath ratio is 1:8-1:15, and the washing time is 3-8 min.
Further, the drying is specifically carried out for 150-240 min at the temperature of 90-105 ℃.
Advantageous effects
Firstly, the modified bamboo shoot shell fiber is treated by 1-butyl-3-methylimidazole chloride, and the structure of the fiber is changed, so that the water molecules are required to overcome small hydrogen bonding force among the molecules of the fiber when entering the fiber, and the water molecules are more easily absorbed by the fiber; secondly, a certain amount of colloid is fixed in the modified bamboo shoot shell fiber after being treated by sodium silicate, so that the water absorption amount of the fiber can be increased; thirdly, the surface of the modified bamboo shoot shell fiber is similar to that of a bamboo fiber, a large number of grooves and transverse sections are formed, the fiber is generally formed by associating a plurality of micro fibers side by side, and the surface area of the fiber and the gap holes on the surface of the fiber are greatly increased. The larger the specific surface area of the fiber is, the stronger the surface energy is, and the more water molecules are attracted to gather, so that the moisture absorption and release performances of the bamboo shoot shell fiber can be directly improved.
Sulfuric acid is widely applied in dyeing and finishing processes, such as neutralization, desizing and the like, but different sulfuric acid concentrations tend to have a certain influence on fiber properties.
According to the invention, the influence of sulfuric acid solution with concentration of 10%, 20% and 30% on the weight loss rate of the modified bamboo shoot shell fiber is examined, the weight loss rate of the modified bamboo shoot shell fiber is obviously improved compared with the acid resistance of the fiber of the traditional degumming group, and the weight loss rate can be reduced by more than 50% under the condition of low acid concentration, so that the acid resistance of the fiber is obviously suggested after the sodium silicate and the 1-butyl-3-methylimidazole chloride are treated, and the acid resistance of the fiber is possibly reduced in a certain relation with the reduction of fiber gaps and the surface area. In view of the wide range of uses of sulfuric acid solutions for treating textile articles, particularly for neutralizing and desizing fibers during dyeing and finishing, in normal production, in order to ensure that the sulfuric acid solution is treated and the properties of the fibers are damaged as little as possible, it is recommended to treat the fibers in as short a time as possible. Or the concentration of the sulfuric acid is controlled within 20 percent so as to ensure good spinnability and avoid the reduction of enterprise profits caused by excessive weight loss.
The process of decomposing and decolorizing the color matter in the fabric to obtain the necessary whiteness. Natural or additional colored substances exist in the natural fiber textile, and remain after scouring and can be decolorized after bleaching. Some synthetic fibers turn yellow after heat setting and also require bleaching. Bleaching agents are both oxidation and reduction, and oxidative bleaching agents are commonly used. Hydrogen peroxide and sodium hypochlorite are the most widely used oxidative bleaching agents in textile processes.
The preparation method provided by the invention is simple, the preparation cost is low, and the prepared bamboo shoot shell fiber is soft and wear-resistant, has good stability, is easy for industrial production, has strong practicability and has a broad market prospect.
Detailed Description
In the invention, bamboo is taken from bamboo forest of Shenshan park in U. Lake, anhui, and bamboo shoot shell, 101-1AS constant temperature blast drying oven, SXT-06 Soxhlet extractor, condensation reflux unit, sidoris electronic balance (0.0001 g), glass rod, tweezers, beaker, benzene, absolute ethyl alcohol, oxalic acid amine, sodium hydroxide, concentrated sulfuric acid, distilled water, concentrated sulfuric acid (1.84 g/L), sodium hydroxide, 1-butyl-3-methylimidazole chloride, sodium silicate, ammonium polyphosphate, and hydrogen peroxide are selected.
Example 1
In order to solve the technical problem of insufficient chemical properties of the traditional degummed bamboo shoot shell fiber, the embodiment provides a method for improving the printing and dyeing chemical properties of the bamboo shoot shell fiber, which comprises the following steps of
1. Soaking the bamboo shoot shells in 90-100deg.C boiled water for 30-60 min, adding Na with a mass ratio of 1% based on the mass of bamboo 2 SiO 3 Continuously boiling for 10-20 min, and draining to obtain bamboo shoot shell fibers;
2. the final concentration of the pre-soaked mixed acid is as follows: h 2 SO 4 1.84g/L，H 3 PO 4 0.49g/L of mixed acid, wherein the presoaking bath ratio is 1:20, and soaking the bamboo shoot shell fiber for 1h at normal temperature;
3、C 8 H 15 ClN 2 solution treatment: preparation of C at 1% 8 H 15 ClN 2 Soaking bamboo shoot shell fiber in acetone solution at bath ratio of 1:10 at normal temperature for 3min;
4. one time of alkali boiling, naOH 7g/L, na 2 SiO 3 2%, sodium polyphosphate 0.25%, na 2 S 2 O 3 The bath ratio of 0.1% is 1:15, the treatment time is 1h, and the treatment temperature is 100 ℃;
5. secondary alkali boiling, naOH 11g/L, na 2 SiO 3 3, sodium polyphosphate 0.25%, bath ratio 1:15, treatment time 2h, treatment temperature 100 ℃.
6. And (3) beating the fiber, namely beating the degummed fiber by using a small wood hammer, so that the colloid remained on the cellulose can be further removed, and the quality of the fiber is improved.
7. Hydrogen peroxide soaking with 4% H 2 0 2 Soaking for 30min, the bamboo shoot shell bleaching agent has bleaching effect, lignin and other impurities with high content in the bamboo shoot shell can be effectively removed, and the degumming efficiency is improved. H 2 0 2 The concentration was 4% for 30min.
8. Acid washing H 2 SO 4 7g/L, bath ratio 1:10,5min.
9. And (3) pure water washing, namely directly washing with pure water, and drying for 180 minutes at 100 ℃ by using an oven to obtain the bamboo shoot shell fiber treated by the method.
The following method is adopted to detect various properties, and the specific method is adopted.
Moisture absorption performance of modified bamboo shoot shell fiber
Moisture regain
Dividing the bamboo shoot shell fibers into 5 groups, adjusting the temperature of an oven to 105 ℃, drying the fibers for 90min, then placing the fibers in a room temperature of 25 ℃, measuring the weight of the fibers every 5min until the weight change of the fibers is less than 0.05% for two times, recording the dry weight of each group at the moment, calculating the moisture regain of each group, and taking an average value, namely the moisture regain of the bamboo shoot shell fibers [8] 。
Calculating the moisture regain according to the measured wet weight and dry weight
W-moisture regain; gs-wet weight of fiber; g-dry weight of fibers;
experiments show that the moisture regain of the bamboo shoot shell fiber is 7.96%, and the moisture regain of the traditional bamboo shoot shell fiber after degumming is 9.61%, so that the moisture regain of the bamboo shoot shell fiber is obviously reduced.
Hygroscopicity
Placing bamboo shoot shell fibers in an oven, adjusting the temperature to 105 ℃, drying the fibers until the weight of the fibers is not changed any more, namely, the fibers reach a dry weight state, taking out the fibers, weighing the fibers immediately, placing the fibers in the room to start moisture absorption, weighing and recording the weight of the fibers every 5min within 40min from the beginning of an experiment, weighing and recording the weight every 10min after 60min, and testing the weight of the fibers every 20min after 100min until the difference of the weights of the fibers weighed twice is less than 0.05%.
Calculating the moisture absorption and regain of the fiber, comparing the traditional degummed bamboo shoot shell fiber with the fiber, and drawing a change chart of the moisture absorption curve of the fiber, wherein the change chart is as follows:
TABLE 1 moisture absorption and regain of bamboo shoot shell fibers
Moisture release properties
Taking a certain amount of bamboo shoot shell fiber, dividing into 5 parts, adjusting the temperature of a drying oven to 105 ℃, placing the bamboo shoot shell fiber into the drying oven for drying to dry weight, placing the bamboo shoot shell fiber into a dryer with water at the bottom to enable the bamboo shoot shell fiber to absorb moisture fully, taking out the bamboo shoot shell fiber, placing the bamboo shoot shell fiber into another dryer, and starting the moisture absorption. The weight is weighed and recorded every 5min for the first 40min, every 10min after 60min, and every 20min after 100min until the change of the fiber weight is less than 0.05%. The formula for calculating the moisture regain of the moisture is as follows:
w-moisture regain of moisture release, G 0 -wet weight of fibres, G-dry weight of fibres;
calculating the moisture regain, and drawing a fiber moisture regain change chart, wherein the change chart is as follows:
TABLE 2 moisture regain of bamboo shoot shell fibers
Acid stability
200ml of 10%, 20% and 30% sulfuric acid solution was prepared, respectively, and placed in a beaker for use. And (3) taking a certain amount of fibers, dividing the fibers into nine groups, numbering the groups respectively, placing the groups in a drying oven for drying to dry weight, and weighing and recording the dry weight respectively. Treating the bamboo shoot shell fiber with 3 prepared sulfuric acid solutions with different concentrations for 5min, 10min and 30min respectively. Taking out the fiber after treatment, cleaning for several times by adopting warm water at 50 ℃, testing the pH value of the cleaning liquid by using a pH test paper after each cleaning until the pH value is between 6.5 and 7.0, then placing the fiber in a 105 ℃ oven for drying until the weight change of the fiber is less than 0.05 percent before and after two times, recording the weight of the fiber at the moment, and calculating the weight loss rate [11] 。
TABLE 3 influence of acid treatment on weight loss ratio of bamboo shoot shell fibers
Alkali stability
200ml of 10%, 20% and 30% sodium hydroxide solution was prepared, respectively, and placed in a beaker for use. Taking a certain amount of bamboo shoot shell fibers, dividing the bamboo shoot shell fibers into nine groups, numbering the groups respectively, drying the bamboo shoot shell fibers in a drying oven at 105 ℃ until the bamboo shoot shell fibers reach dry weight, and weighing and recording the dry weight of the fibers respectively. The bamboo shoot shell fiber is respectively treated with 3 prepared sodium hydroxide solutions for 5min, 10min and 30min, the fiber is taken out after the treatment, and the fiber is washed with warm water at 50 ℃ for several times until the pH value is between 7.0 and 7.5 measured by using pH test paper. Putting the fiber into a dryer to dry for 24 hours, taking out, adjusting the temperature of the drying oven to 105 ℃, drying for 120 minutes by using an oven, starting to measure the weight of the fiber until the difference between the weight of the fiber before and the weight of the fiber after the fiber is less than 0.05%, recording the dry weight of each group of fiber, and calculating the weight loss rate.
TABLE 4 influence of alkali treatment on weight loss ratio of bamboo shoot shell fiber
When the sodium hydroxide solution is used for treating the bamboo shoot shell fibers, the weight loss rate of the fibers is gradually increased along with the increase of the concentration of the solution, and the change rate of the weight loss rate of the fibers is gradually accelerated along with the increase of the time. The modified fiber reduced the weight loss rate, but the modified fiber did not exhibit a yellow liquid after alkali treatment, and according to the analysis, the modified fiber had less gum, lipid, hemicellulose, impurities, etc. than the unmodified fiber.
Hydrogen peroxide stability
5g/l, 10g/l and 15g/l hydrogen peroxide solution are respectively prepared and placed in a beaker for standby. A certain amount of fibers are taken and divided into nine groups, and are respectively numbered. Drying in a 105 ℃ drying oven to dry weight, weighing and recording the dry weight of the fiber. The fibers of the groups 1 to 6 are respectively treated with three concentrations of hydrogen peroxide solution for 10min and 30min, and the fibers of the groups 7 to 9 are heated in a water bath at 85 ℃ for 30min. After the treatment, the mixture was washed with warm water at 50℃several times. Drying in a drier for 24h, taking out, drying in an oven at 80deg.C for 120min, adjusting the temperature of the drying oven to 105deg.C, drying until the weight change is less than 0.05%, recording the weight of each group of fibers, calculating the weight loss rate, and observing the bleaching effect of hydrogen peroxide solution.
TABLE 5 Effect of Hydrogen peroxide treatment on bamboo shoot shell fiber
For the weight loss ratio, the weight loss ratio is larger and larger with the increase of the treatment time and the concentration. The hydrogen peroxide has good bleaching effect on the modified bamboo shoot shell fiber at normal temperature, and the bleaching effect is better with the increase of the concentration below 15g/l, the bleaching effect is obviously enhanced with the increase of the treatment time at 5g/l, and the bleaching effect is obviously enhanced with the time at the concentration of 10g/l or above. At 85 ℃, hydrogen peroxide has no bleaching effect on the fibers, but not only causes the fibers to be yellow to different degrees, but also causes the bamboo shoot shell fibers to lose spinnability.
Sodium hypochlorite stability
200ml of sodium hypochlorite solution with the concentration of 1g/l, 1.5g/l and 2g/l is respectively prepared and placed in a beaker for standby. A certain amount of fibers are taken and divided into nine groups, and are respectively numbered. And adjusting the temperature of the drying oven to 105 ℃ and drying to dry weight, weighing and recording the dry weight of the fiber. Under the room temperature environment, the fibers with the numbers of 1 to 6 are respectively treated with the prepared sodium hypochlorite solution with three concentrations for 10min and 30min. The fibers with the numbers of 7 to 9 are respectively heated to 85 ℃ in water bath in 3 sodium hypochlorite solutions with the concentration for 30min. After the respective treatments, the fibers were taken out, washed with warm water at 50 ℃ for several times, and then with clear water for several times. Drying in a dryer for 24h, adjusting the temperature of the oven to 105 ℃ after drying, and drying until the mass change measured in the front and the back is less than 0.05%. The weight loss ratio was calculated and the bleaching effect was carefully observed.
TABLE 6 Effect of sodium hypochlorite treatment on bamboo shoot shell fiber
NaClO can be almost completely converted into hypochlorous acid (HClO) in an acid solution, the hypochlorous acid is extremely unstable, various forms of decomposition can be generated at normal temperature, the decomposition products can undergo addition reaction with conjugated double bonds of pigment molecules in fibers, a color development system of natural pigments is destroyed and disappears, and the purpose of bleaching is achieved, so that the natural pigments in the fibers can be removed completely, the white appearance of fabrics can be provided, and the whiteness and the color vividness of the fabrics are improved, so that the process is generally called as oxidation bleaching of knitted fabrics. At normal temperature, the sodium hypochlorite resistance of the modified bamboo shoot shell fiber is higher than that of the unmodified bamboo shoot shell fiber, and the weight loss rate of the modified bamboo shoot shell fiber and the unmodified bamboo shoot shell fiber is higher when the modified bamboo shoot shell fiber is boiled in water bath at the temperature of 85 ℃.
Example 2
In order to solve the technical problem of insufficient chemical properties of the traditional degummed bamboo shoot shell fiber, the embodiment provides a method for improving the printing and dyeing chemical properties of the bamboo shoot shell fiber, which comprises the following steps of
1. Soaking the bamboo shoot shells in 90-100deg.C boiled water for 30-60 min, adding Na 2% by mass based on the mass of bamboo 2 SiO 3 Continuously boiling for 10-20 min, and draining to obtain bamboo shoot shell fibers;
2. the final concentration of the pre-soaked mixed acid is as follows: h 2 SO 4 3.68g/L，H 3 PO 4 0.98g/L of mixed acid, wherein the presoaking bath ratio is 1:10, and soaking the bamboo shoot shell fiber for 2 hours at normal temperature;
3、C 8 H 15 ClN 2 solution treatment: preparation of C at 0.6% 8 H 15 ClN 2 An acetone solution, the bath ratio is 1:15,soaking the bamboo shoot shell fiber at normal temperature for 5min;
4. one time of alkali boiling, naOH 14g/L, na 2 SiO 3 3%, sodium polyphosphate 0.3%, na 2 S 1 O 3 The bath ratio of 0.2% is 1:10, the treatment time is 0.5h, and the treatment temperature is 100 ℃;
5. secondary alkali boiling, naOH 18g/L, na 2 SiO 3 5.3% of sodium polyphosphate, a bath ratio of 1:10, a treatment time of 2 hours and a treatment temperature of 100 ℃.
6. And (3) beating the fiber, namely beating the degummed fiber by using a small wood hammer, so that the colloid remained on the cellulose can be further removed, and the quality of the fiber is improved.
7. Hydrogen peroxide soaking with 5% H 2 0 2 Soaking for 20min, the bamboo shoot shell bleaching agent not only has bleaching effect, but also can effectively remove lignin and other impurities with higher content in the bamboo shoot shell.
8. Pickling with 12g/L H 2 SO 4 Washing with water solution, wherein the bath ratio is 1:15,8min.
9. And (3) pure water washing, namely directly washing with pure water, and drying for 240min at 90 ℃ by using an oven to obtain the bamboo shoot shell fiber treated by the method.
Example 3
In order to solve the technical problem of insufficient chemical properties of the traditional degummed bamboo shoot shell fiber, the embodiment provides a method for improving the printing and dyeing chemical properties of the bamboo shoot shell fiber, which comprises the following steps of
1. Soaking the bamboo shoot shells in 90-100deg.C boiled water for 30-60 min, adding Na with mass ratio of 0.2% based on the mass of bamboo 2 SiO 3 Continuously boiling for 10-20 min, and draining to obtain bamboo shoot shell fibers;
2. the final concentration of the pre-soaked mixed acid is as follows: h 2 SO 4 0.92g/L，H 3 PO 4 0.25g/L mixed acid, wherein the presoaking bath ratio is 1:20, and soaking the bamboo shoot shell fiber for 0.5h at normal temperature;
3、C 8 H 15 ClN 2 solution treatment: preparing C with concentration of 2% 8 H 15 ClN 2 Acetone solution with a bath ratio of 1:20 at normal temperatureSoaking the bamboo shoot shell fiber at a temperature for 1min;
4. one time of alkali boiling, naOH 5g/L, na 2 SiO 3 1%, sodium polyphosphate 0.05%, na 2 S 2 O 3 0.02% bath ratio of 1:20, treatment time of 0.5h and treatment temperature of 95 ℃;
5. secondary alkali boiling, naOH 11g/L, na 2 SiO 3 3, sodium polyphosphate 0.25%, bath ratio 1:15, treatment time 2h, treatment temperature 95 DEG C
6. And (3) beating the fiber, namely beating the degummed fiber by using a small wood hammer, so that the colloid remained on the cellulose can be further removed, and the quality of the fiber is improved.
7. Hydrogen peroxide soaking with 2% H 2 0 2 Soaking for 50min, the bamboo shoot shell bleaching agent has bleaching effect and can effectively remove lignin and other impurities with high content in the bamboo shoot shell.
8. Acid washing H 2 SO 4 5g/L, bath ratio 1:8,3min.
9. And (3) pure water washing, namely directly washing with pure water, and drying for 150min at 105 ℃ by using an oven to obtain the bamboo shoot shell fiber treated by the method.
Claims (7)
1. A method for improving the printing and dyeing chemical properties of bamboo shoot shell fibers is characterized by comprising the following steps: the method specifically comprises the following steps:
(1) soaking bamboo shoot shell in boiling water, adding Na 2 SiO 3 Draining to obtain bamboo shoot shell fiber;
(2) the final concentration of the pre-soaked mixed acid is as follows: h 2 SO 4 0.92~3.68g/L，H 3 PO 4 0.25-0.98 g/L of mixed acid solution, and soaking the bamboo shoot shell fibers in the mixed acid solution at normal temperature;
③C 8 H 15 ClN 2 solution treatment: c with concentration of 0.6-2% is prepared 8 H 15 ClN 2 Soaking the bamboo shoot shell fiber in an acetone solution for 1-5 min at normal temperature;
(4) one time of alkali boiling, namely adopting NaOH and Na 2 SiO 3 Sodium polyphosphate and Na 2 S 2 O 3 Is treated by the mixed alkali solution;
(5) and (3) secondary alkaline cooking: naOH and Na are adopted 2 SiO 3 And a mixed alkali solution of sodium polyphosphate;
(6) sequentially carrying out fiber beating treatment, hydrogen peroxide soaking, sulfuric acid solution cleaning and pure water cleaning, and drying to obtain modified bamboo shoot shell fibers;
wherein in the primary alkali boiling, naOH is 5-14 g/L, na 2 SiO 3 10-30 g/L, 0.5-3 g/L sodium polyphosphate, na 2 S 2 O 3 0.2~2g/L；
Wherein in the secondary alkaline cooking, naOH is 5-14 g/L, na 2 SiO 3 10-30 g/L, and 0.5-3 g/L of sodium polyphosphate.
2. The method for improving the printing and dyeing chemical properties of bamboo shoot shell fibers according to claim 1, wherein the method comprises the following steps: the treatment time of the primary alkali boiling and the secondary alkali boiling is 0.5-2 h, and the treatment temperature is 95-100 ℃.
3. The method for improving the printing and dyeing chemical properties of bamboo shoot shell fibers according to claim 1, wherein the method comprises the following steps: in the step (1), the Na 2 SiO 3 The mass ratio of the added materials is 0.2-2%.
4. The method for improving the printing and dyeing chemical properties of bamboo shoot shell fibers according to claim 1, wherein the method comprises the following steps: and (3) the bath ratio of the steps (2), (3), (4) and (5) is 1:10-1:20.
5. The method for improving the printing and dyeing chemical properties of bamboo shoot shell fibers according to claim 1, wherein the method comprises the following steps: the hydrogen peroxide soaking is specifically carried out by adopting H with the concentration of 2-5% 2 O 2 Soaking for 20-50 min.
6. The method for improving the printing and dyeing chemical properties of bamboo shoot shell fibers according to claim 1, wherein the method comprises the following steps: the sulfuric acid solution is specifically cleaned by adopting 5-12 g/L H 2 SO 4 Aqueous cleaningThe bath ratio is 1:8-1:15, and the cleaning time is 3-8 min.
7. The method for improving the printing and dyeing chemical properties of bamboo shoot shell fibers according to claim 1, wherein the method comprises the following steps: the drying is specifically carried out at the temperature of 90-105 ℃ for 150-240 min.
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