CN105200557A - Preparation method of cellulose and chitosan hybrid fiber - Google Patents
Preparation method of cellulose and chitosan hybrid fiber Download PDFInfo
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- CN105200557A CN105200557A CN201510686216.2A CN201510686216A CN105200557A CN 105200557 A CN105200557 A CN 105200557A CN 201510686216 A CN201510686216 A CN 201510686216A CN 105200557 A CN105200557 A CN 105200557A
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- 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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
Abstract
The invention discloses a preparation method of a cellulose and chitosan hybrid fiber. The preparation method comprises the following steps of (1) taking and drying cellulose, crushing to obtain cellulose powder; taking the mixed liquor of the cellulose powder and acidic ionic liquid, performing heat preservation, adding a carboxylation agent, stirring, and performing heat treatment; (2) taking and uniformly mixing the mixed liquor of the cellulose powder and the acidic ionic liquid, and performing heat treatment; (3) mixing the products of the step (1) and the step (2), heating, stirring and uniformly reacting; (4) adding a regeneration agent into an obtained sample to wash out liquid reagents such as acidic ionic liquid mixed liquor, and a solid is dried to obtain the hybrid fiber. The hybrid fiber obtained by the preparation method has the characteristics of good water-retaining property, high heat stability, antibiosis, environmental protection, ventilation, moisture prevention, porous property and the like. A reactant is stable in a reaction process, and by-products cannot be produced. The fiber has wide prospect in the fields of drug carriers, enzyme carriers, adsorbed substances and the like.
Description
Technical field
The invention belongs to biological chemical field, be specifically related to a kind of cellulose and shitosan and mix the preparation method of fiber.
Background technology
Shitosan is a kind of natural biological polymer obtained after taking off second phthalein by chitin, and chitin is the nitrogenous natural organic-compound that on the earth, the outer quantity of isolating protein is maximum.Shitosan have nontoxic, have no side effect, good biocompatibility, biodegradable, can not the advantages such as environmental pollution be caused, milipore filter, diffusion barrier, edible film, Biodegradable films, medical films, food fresh keeping membrane etc. can be made.Because of of many uses, chitosan film becomes the focus of industry current research and exploitation.
Cellulose be nature primarily of plant by photosynthesis synthesize inexhaustible, with it natural polymer without cease, be mainly used in the production departments such as weaving, papermaking, fine chemistry industry.Except traditional commercial Application, how to intersect and effectively utilize cellulose resource further in conjunction with subjects such as nano science, chemistry, physics, materialogy, biology and bionics, the application of developing cellulose in nanometer fine chemistry industry, nanometer medicine, nanometer food, nano composite material and new forms of energy.
Cellulose and shitosan are that occurring in nature is biodegradable, the good two kinds of natural macromolecular materials of biocompatibility.Cellulose is made up of the D-Glucose of β-(1 → 4)-link, and it contains great amount of hydroxy group, is easily formed in molecule and intermolecular hydrogen bonding, have certain mechanical strength, but film forming is poor.Shitosan is combined into by β-Isosorbide-5-Nitrae-glycosidic bond by D-Glucosamine, has antibiotic property and multiple biologically active, adsorption function etc., but shitosan water imbibition is strong, the wet mechanical intensity difference of the fiber formed or membrane material, easily swelling, the application as medical material is restricted.Cellulose/Chitosan composite has cellulose and the common feature of shitosan, has biocompatibility and biodegradable.Its composite membrane can make up the deficiency of cellulose and shitosan existence, in biomedicine field, apply important in inhibiting.Due to cellulose indissoluble solution, the method at present mainly by adding cellulose granules in the acetum of shitosan prepares Cellulose/Chitosan composite.
Zhou Jia village etc. (dyeing of shitosan and cellulose fiber blended fabric is studied. fine Technical Textiles .2011) cellulose and shitosan are processed respectively, simple mixing, the assorted fiber of homogeneous can not be formed, cellulose can not form chemical bond with shitosan, just simple mixing, spatially close to together, the blended fiber therefore formed is uneven, there is big and small uneven hole inside, and structural behaviour is unstable.
Kuang Bing etc. (application study of Cellulose/Chitosan composite is in progress, food industry science and technology .2015) adopt base extraction shitosan and cellulose, carry out blending, the active group in shitosan and cellulose can not be made to discharge to shitosan and cellulose.
Summary of the invention
Goal of the invention: for solving problems of the prior art, the invention provides a kind of cellulose and shitosan to mix the preparation method of fiber, shitosan and cellulose is utilized to be raw material, be exposed in ionic liquid hybrid solution by cellulose modifying and shitosan active group, grafting synthesizes the novel assorted fiber of function admirable.
Technical scheme: for realizing above-mentioned technical purpose, cellulose of the present invention and shitosan are mixed the preparation method of fiber, comprise the steps:
(1) extracting cellulose is dried, is pulverized acquisition cellulose powder; Mixed with acidic ion liquid mixed liquor by cellulose powder, 30 DEG C ~ 150 DEG C insulations, add carboxylated reagent, stir process, obtain product A;
(2) get shitosan to mix with acidic ion liquid mixed liquor, 30 DEG C ~ 150 DEG C heat treated, obtain product B, wherein, step (1) and the acidic ion liquid mixed liquor described in step (2) are the mixture of ionic liquid and solvent, the mass ratio of mixing is ionic liquid: solvent=90 ~ 99: 1 ~ 10, and described acidic ion liquid mixed liquor is as solvent and catalyst;
(3) product A step (1) and (2) obtained and B mix, and 30 DEG C ~ 150 DEG C heating stir reaction, obtain sample;
(4) by the sample that step (3) obtains, add the liquid preparation in regeneration reagent wash removing sample, the ionic liquid in withdrawal liquid preparation, solid obtains assorted fiber through super-dry.
Wherein, described carboxylated reagent is any one or a few the mixture in maleic anhydride, succinyl oxide and phthalic anhydride, and wherein, in described carboxylated reagent and cellulose powder, the mol ratio of carboxyl is 1 ~ 1.5: 1.Preferably, in step (1), the mass ratio of cellulose powder and acidic ion liquid mixed liquor is 1: 8 ~ 10.
Preferably, the regeneration reagent described in step (4) is any one in water, methyl alcohol and ethanol, and wherein, the volume mass ratio that the consumption of cellulose regenerated reagent and step (3) react the sample A of gained is 1 ~ 5ml: 1g.
Preferably, the solvent in described acidic ion liquid mixed liquor is any one in dimethyl sulfoxide (DMSO), dimethyl formamide and pyridine.
Preferably, described acidic ion liquid is any one or a few the combination in 1-ethyl-3-methylimidazole acetate ([EMIM] [Ac]), 1-butyl-3-N-Methylimidazoleacetic salt ([BMIM] [Ac]), 1-amide groups-3-N-Methylimidazoleacetic salt ([AMIM] [Ac]), 1-amide groups-3-methylimidazole villaumite ([AMIM] [Cl]), 1-butyl-3-methylimidazole villaumite ([BMIM] [Cl]) or 1-butyl-3-picoline villaumite ([BmpyM] [Cl]).
The cellulose prepared by above-mentioned preparation method and shitosan fiber of mixing is same in protection scope of the present invention.The present invention also proposed above-mentioned cellulose and shitosan further and to mix the application of fiber as metallic adsorbent, as the application of copper ion in adsorbent solution.
This method adopts ionic liquid hybrid solution as reaction medium and catalyst, and hydrogen bond is by temporary breaks in ionic liquid for shitosan, and active reactive group exposes, and is conducive to the graft reaction of assorted fiber.Simultaneously ionic liquid hybrid solution can dissolving cellulos well, promotes carboxylated reagent acid anhydrides and fibrin reaction.The cellulose of dissolved state and shitosan mix by this method, and its Quick uniform is merged, and avoid shitosan and cellulosic portion fractures, and the of good performance assorted fiber of formation has the pliability of shitosan and cellulosic rigidity concurrently.
Beneficial effect: compared with prior art, tool of the present invention has the following advantages:
(1) the assorted fiber prepared by the inventive method has good water-retaining property and heat endurance is high, antibacterial, the feature of environmental protection, and in physical property, fiber has the pliability of cellulosic rigidity and shitosan concurrently; Biological property aspect, have the characteristic such as the characteristics such as the silk of shitosan is sliding, pliable and tough and cellulosic ventilative, moisturizing concurrently, without anaphylactogen, without immune response, performance is better than cellulose and shitosan;
(2) present invention process process simple, efficient, easy to operate, be easy to realize large-scale production, reactant is stable in course of reaction, does not produce accessory substance.
Accompanying drawing explanation
Fig. 1 is present invention process flow chart;
Fig. 2 A ~ Fig. 2 C is respectively the SEM figure of the compound cellulose that cellulosic SEM schemes, prepared by the embodiment 5 and SEM figure of shitosan.
Detailed description of the invention
The invention provides a kind of cellulose and shitosan to mix the preparation method of fiber, its process chart as shown in Figure 1, comprises the steps:
(1) extracting cellulose washing, oven dry, pulverizing obtain cellulose powder; Mixed with acidic ion liquid mixed liquor by cellulose powder, 30 DEG C ~ 150 DEG C insulations, add carboxylated reagent, stir process, complete cellulosic dissolving and modification, obtain product A;
(2) get shitosan to mix with acidic ion liquid mixed liquor, heat treated, obtains product B, and acidic ion liquid mixed liquor is as solvent and catalyst;
(3) product A step (1) and (2) obtained and B mix, and heat the reaction that stirs, obtain sample;
(4) by the sample that step (3) obtains, add the liquid preparation in regeneration reagent wash removing sample, the ionic liquid in withdrawal liquid preparation, solid obtains assorted fiber through super-dry.
Wherein, step (1) and the acidic ion liquid mixed liquor described in step (2) are the mixture of ionic liquid and solvent, the mass ratio of mixing is ionic liquid: solvent=90 ~ 99: 1 ~ 10, ionic liquid is 1-ethyl-3-methylimidazole acetate ([EMIM] [Ac]), 1-butyl-3-N-Methylimidazoleacetic salt ([BMIM] [Ac]), 1-amide groups-3-N-Methylimidazoleacetic salt ([AMIM] [Ac]), 1-amide groups-3-methylimidazole villaumite ([AMIM] [Cl]), any one or a few combination in 1-butyl-3-methylimidazole villaumite ([BMIM] [Cl]) or 1-butyl-3-picoline villaumite ([BmpyM] [Cl]).For the process of cellulose and shitosan, identical ionic liquid mixed liquor can be used, also can use different ionic liquid mixed liquors.
Below technical solution of the present invention is described in detail, but protection scope of the present invention is not limited to described embodiment.
The preparation method of embodiment 1. acidic ion liquid mixed liquor ([AMIM] [Cl]-DMSO mixed liquor).
Ionic liquid [AMIM] [Cl] of 5g mixed with 0.2gDMSO, 110 DEG C of magnetic agitation heating, obtain.
The preparation method of embodiment 2. acidic ion liquid mixed liquor ([BmpyM] [Cl]-dimethyl formamide).
Ionic liquid [BmpyM] [Cl] of 4g mixed with 0.2g dimethyl formamide, 80 DEG C of magnetic agitation heating obtain.
The preparation method of embodiment 3. acidic ion liquid mixed liquor ([EMIM] [Ac]-dimethyl formamide).
Ionic liquid [EMIM] [Ac] of 4g is mixed with 0.1g dimethyl formamide, 70 DEG C of magnetic agitation heating.
The preparation method of embodiment 4. acidic ion liquid mixed liquor ([EMIM] [Ac]-dimethyl formamide).
Ionic liquid [EMIM] [Ac] of 4g is mixed with 0.3g dimethyl formamide, 70 DEG C of magnetic agitation heating.
Embodiment 5. is mixed the preparation of fiber.
Present embodiments provide a kind of cellulose and shitosan to mix the preparation method of fiber, comprise the steps:
(1) cellulosic dissolving and modification: extracting cellulose, dries 1d for 80 DEG C, pulverizes, obtain cellulose powder; Take the cellulose powder of 0.3g, add 5g acidic ion liquid mixed liquor (embodiment 3 obtains), at 100 DEG C, heating is stirred to dissolving, reaction 15min; Add 0.2g succinyl oxide, 100 DEG C of insulations, stirring reaction 2h, obtains product A;
(2) shitosan dissolves and activates: by filling 50g acidic ion liquid mixed liquor, (round-bottomed flask of (embodiment 3. obtains) is heated to 90 DEG C, adds the shitosan of 5g under magnetic stirring in batches, obtains product B;
(3) preparation of complex fiber material: the product A obtained and product B are mixed, 90 DEG C of heating, magnetic agitation homogeneous reaction.Be cooled to room temperature, the liquid reagents such as by the sample obtained, add the washing of 150ml ethanol, magnetic agitation 10min, washs 3 times, removing acidic ion liquid mixed liquor ,-40 DEG C of freeze dryings obtain assorted fiber.Characterized by the assorted fiber ESEM prepared, result is as shown in Fig. 2 A ~ 2C.As shown in Figure 2, native cellulose surface does not have hole substantially, has fold, and quality is uneven.The hole of the void ratio shitosan of compound cellulose is more even, has the hole of fine uniform.
Change the kind of acidic ion liquid mixed liquor, adopting uses the same method can prepare a series of assorted fiber, and standard results is similar.
Embodiment 6. is mixed the research of fiber as adsorbent.
The solution that the assorted fiber dust that the embodiment 5 of getting 0.3g prepares and 20ml contain metal copper ion mixes (Cu
2+concentration is 700mmol/L), adsorption time is 24h, detects the concentration of remaining copper ion in solution every 4h sampling.Result is as shown in table 1.Result surface, prepared assorted fiber dust can absorbing copper ion effectively.
Table 1 is mixed the experiment of fiber as adsorbent copper ion
Claims (8)
1. cellulose and shitosan are mixed a preparation method for fiber, it is characterized in that, comprise the steps:
(1) extracting cellulose is dried, is pulverized acquisition cellulose powder; Mixed with acidic ion liquid mixed liquor by cellulose powder, 30 DEG C ~ 150 DEG C insulations, add carboxylated reagent, stir process, obtain product A;
(2) get shitosan to mix with acidic ion liquid mixed liquor, 30 DEG C ~ 150 DEG C heat treated, obtain product B, wherein, step (1) and the acidic ion liquid mixed liquor described in step (2) are the mixture of ionic liquid and solvent, the mass ratio of mixing is ionic liquid: solvent=90 ~ 99: 1 ~ 10, and described acidic ion liquid mixed liquor is as solvent and catalyst;
(3) product A step (1) and (2) obtained and B mix, and 30 DEG C ~ 150 DEG C heating stir reaction, obtain sample;
(4) by the sample that step (3) obtains, add the liquid preparation in regeneration reagent wash removing sample, the ionic liquid in withdrawal liquid preparation, solid obtains assorted fiber through super-dry.
2. cellulose according to claim 1 and shitosan are mixed the preparation method of fiber, it is characterized in that, described carboxylated reagent is any one or a few the mixture in maleic anhydride, succinyl oxide and phthalic anhydride, wherein, in described carboxylated reagent and cellulose powder, the mol ratio of carboxyl is 1 ~ 1.5: 1.
3. cellulose according to claim 1 and shitosan are mixed the preparation method of fiber, it is characterized in that, in step (1), the mass ratio of cellulose powder and acidic ion liquid mixed liquor is 1: 8 ~ 10.
4. cellulose according to claim 1 and shitosan are mixed the preparation method of fiber, it is characterized in that, regeneration reagent described in step (4) is any one in water, methyl alcohol and ethanol, wherein, the consumption of cellulose regenerated reagent and step (3) react the volume mass ratio of the sample A of gained is 1 ~ 5ml: 1g.
5. a kind of cellulose according to claim 1 and shitosan are mixed the preparation method of fiber, it is characterized in that, the solvent in described acidic ion liquid mixed liquor is any one in dimethyl sulfoxide (DMSO), dimethyl formamide and pyridine.
6. a kind of cellulose according to claim 1 and shitosan are mixed the preparation method of fiber, it is characterized in that, described acidic ion liquid is any one or a few the combination in 1-ethyl-3-methylimidazole acetate, 1-butyl-3-N-Methylimidazoleacetic salt, 1-amide groups-3-N-Methylimidazoleacetic salt, 1-amide groups-3-methylimidazole villaumite, 1-butyl-3-methylimidazole villaumite and 1-butyl-3-picoline villaumite.Described acidic ion liquid is 1-ethyl-3-methylimidazole acetate ([EMIM] [Ac]), 1-butyl-3-N-Methylimidazoleacetic salt ([BMIM] [Ac]), 1-amide groups-3-N-Methylimidazoleacetic salt ([AMIM] [Ac]), 1-amide groups-3-methylimidazole villaumite ([AMIM] [Cl]), any one or a few combination of 1-butyl-3-methylimidazole villaumite ([BMIM] [Cl]) or 1-butyl-3-picoline villaumite ([BmpyM] [Cl]).
7. the cellulose that the preparation method according to any one of claim 1 ~ 6 prepares and shitosan are mixed fiber.
8. cellulose according to claim 7 and shitosan are mixed the application of fiber as metallic adsorbent.
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| CN106964321A (en) * | 2017-05-25 | 2017-07-21 | 中国热带农业科学院海口实验站 | A kind of preparation method and applications of banana fiber chitosan composite aquogel |
| CN109234836A (en) * | 2018-10-16 | 2019-01-18 | 浙江理工大学 | A kind of poly- polysaccharide composite fiber of homogeneous and preparation method thereof |
| CN110330697A (en) * | 2019-07-30 | 2019-10-15 | 中国医学科学院生物医学工程研究所 | Using ionic liquid as 3D printing chitosan material of medium and preparation method thereof |
| CN113307325A (en) * | 2021-06-17 | 2021-08-27 | 唐山市蓝翔环保设备有限公司 | Harmless agent for sewage treatment and preparation method thereof |
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| CN113307325A (en) * | 2021-06-17 | 2021-08-27 | 唐山市蓝翔环保设备有限公司 | Harmless agent for sewage treatment and preparation method thereof |
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