CN104530464A - Cyanoethyl cellulose porous material and preparation method thereof - Google Patents
Cyanoethyl cellulose porous material and preparation method thereof Download PDFInfo
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- CN104530464A CN104530464A CN201510024058.4A CN201510024058A CN104530464A CN 104530464 A CN104530464 A CN 104530464A CN 201510024058 A CN201510024058 A CN 201510024058A CN 104530464 A CN104530464 A CN 104530464A
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Abstract
The invention discloses a cyanoethyl cellulose porous material and a preparation method thereof and aims at providing a cyanoethyl cellulose porous material which can expand the field of application and the using functions of cyanoethyl cellulose and a preparation method of the cyanoethyl cellulose porous material. The preparation method comprises the following steps: dissolving cyanoethyl cellulose to form a solution, slowly immersing into ethanol or deionized water with a container till a solvent is completely dispersed in the ethanol or the deionized water, taking out and drying to obtain the porous cyanoethyl cellulose material. The prepared cyanoethyl cellulose porous material has the advantages of good biocompatibility and degradability, extensive sources of raw materials, reproducibility and relatively uniform pore size distribution; and furthermore, the preparation method is simple, practical and easy to operate and realize industrialization.
Description
Technical field
The present invention relates to a kind of porous material and preparation method thereof, be specifically related to a kind of cyanoethyl cellulose porous material and preparation method thereof.
Background technology
Porosu solid has the features such as volume density is little, specific surface area large, higher than mechanical property, damping capacity is good, has become a kind of outstanding new function structured material.Due to the Physical and mechanical properties of its excellence, have the double attribute of function and structure concurrently, porous material can be widely applied to aerospace, telecommunications, communications and transportation, nuclear power, medical science, environmental protection, metallurgy, machinery, building, electrochemistry and field of petrochemical industry, relate to all many-sided purposes such as separation, filtration, gas distribution, noise reduction, shock-absorbing, packaging, heat exchange, heat insulation back-fire relief, electromagnetic shielding, electrochemical process, catalytic reaction engineering and biotechnology, in science and technology and the development of the national economy, give play to huge effect.The porous of material, imparts brand-new excellent properties to original material.This wide performance extends, and porous material is possessed dense material is difficult to the purposes of being competent at, and provides the potentiality that engineering is created, and has greatly widened its range of application at engineering field.
Cellulose and its derivates has good wetting ability and biocompatibility, cellulosic exploitation has been become to the focus of research at present.Cellulose base porous material have air-dry rapidly, soil pick-up ability is strong, moisture-absorbing moisture-keeping performance is good and use the advantage such as biodegradable afterwards.But, because the crystallizing field of cellulose and its derivates rule by marshalling itself is formed with relative irregular unformed area, add on cellulose molecular chain and there is a large amount of intermolecular and intramolecular hydrogen bonds, result in cellulosic reactive behavior low, be not easy to be difficult to by dissolving make full use of.
Chemical modification improves the effective ways in Mierocrystalline cellulose performance, broaden application field.Cyanoethyl cellulose is cellulosic a kind of derivative, there is the advantages such as good biocompatibility, resistance to microbial attack (resistance to mildew and rot, Anti-moth-eating), heat and acid acceptance is high, dye affinity is strong, moisture regain is low, good mechanical property, especially also there is the special performance of high-k.
The porous material of cyanoethyl cellulose has no report.
Summary of the invention
The object of the invention is expand the Application Areas of cyanoethyl cellulose and the cyanoethyl cellulose porous material of using function and preparation method thereof to provide a kind of.
The present invention is achieved by the following technical solution:
A kind of preparation method of cyanoethyl cellulose porous material comprises step:
A. cyanoethyl cellulose is dissolved in solvent and forms solution;
B. cyanoethyl cellulose solution is immersed in ethanol or deionized water together with the container of splendid attire, is spread in ethanol or deionized water completely to solvent;
C. dry.
Be immersed in ethanol or deionized water after dissolving by cyanoethyl cellulose and be separated, be then drying to obtain porous material product.
Preferred further, the solvent in described step a is the one in DMF, N,N-dimethylacetamide, dimethyl sulfoxide (DMSO).Namely the solvent in step a is preferably DMF (DMF), N,N-dimethylacetamide (DMAc), dimethyl sulfoxide (DMSO), but is not limited to this three kinds of solvents.
Further, the liquid quality fraction of described step a preparation is 2%-6%.Namely the mass values of the solution of cyanoethyl cellulose and preparation is 2%-6%.
Further, the substitution value of the cyanoethyl cellulose in described step a is not less than 2.4.
Preferred further, the ethanol in described step b is dehydrated alcohol.
Preferred further, in described step c, drying mode is that lyophilize or supercritical co are dry.These two kinds of drying modes are preferred drying mode, but the present invention also can adopt other drying means, as vacuum-drying, and Air drying etc.
Preferred further, the drying conditions of described supercritical co drying is 50 DEG C, 16MPa.
The present invention has following beneficial effect:
1, cyanoethyl cellulose porous material of the present invention, biocompatibility and degradation property good, and raw material sources are extensively and have recyclability.Cyanoethyl cellulose is the derivatived cellulose that base material obtains through chemical modification with Mierocrystalline cellulose, has the biological degradability the same with Mierocrystalline cellulose and good biocompatibility.Cellulose origin, in cotton, timber, straw etc., is renewable natural polysaccharide the abundantest on the earth.
2, the aperture of cyanoethyl cellulose porous material of the present invention is at 20-1000nm, and preparation method is simple, practical, easy handling.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described.Described embodiment is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Embodiment one
1g substitution value be 2.4 cyanoethyl cellulose (i.e. CEC) be dissolved in 40g DMF (DMF) and form clear solution.Solution is placed in deionized water submergence 24h together with container, and solid materials takes out, and lyophilize can obtain cyanoethyl cellulose porous material.
Embodiment two
1g substitution value be 2.75 CEC be dissolved in 25g N,N-dimethylacetamide (DMAc) and form clear solution.Solution is placed in dehydrated alcohol submergence 24h together with container, 50 DEG C, 16MPa supercritical CO
2drying cyanoethyl cellulose porous material.
Embodiment three
1g substitution value be 2.6 cyanoethyl cellulose (i.e. CEC) be dissolved in 17g DMF (DMF) and form clear solution.Solution is placed in deionized water submergence 24h together with container, and solid materials takes out, and lyophilize can obtain cyanoethyl cellulose porous material.
Claims (8)
1. a preparation method for cyanoethyl cellulose porous material, is characterized in that: comprise step:
A. cyanoethyl cellulose is dissolved in solvent and forms solution;
B. cyanoethyl cellulose solution is immersed in ethanol or deionized water together with the container of splendid attire, is spread in ethanol or deionized water completely to solvent;
C. dry.
2. preparation method according to claim 1, is characterized in that: the solvent in described step a is the one in DMF, N,N-dimethylacetamide, dimethyl sulfoxide (DMSO).
3. preparation method according to claim 2, is characterized in that: the liquid quality fraction of described step a preparation is 2%-6%.
4. preparation method according to claim 1, is characterized in that: the substitution value of the cyanoethyl cellulose in described step a is not less than 2.4.
5. preparation method according to claim 1, is characterized in that: the ethanol in described step b is dehydrated alcohol.
6. preparation method according to claim 1, is characterized in that: in described step c, drying mode is that lyophilize or supercritical co are dry.
7. preparation method according to claim 6, is characterized in that: the drying conditions of described supercritical co drying is 50 DEG C, 16MPa.
8. a cyanoethyl cellulose porous material, is characterized in that: according to the method preparation in claim 1 to 7 described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510024058.4A CN104530464A (en) | 2015-01-16 | 2015-01-16 | Cyanoethyl cellulose porous material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510024058.4A CN104530464A (en) | 2015-01-16 | 2015-01-16 | Cyanoethyl cellulose porous material and preparation method thereof |
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| CN201510024058.4A Pending CN104530464A (en) | 2015-01-16 | 2015-01-16 | Cyanoethyl cellulose porous material and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0919285A (en) * | 1995-07-06 | 1997-01-21 | Nisshinbo Ind Inc | Plant tissue culture medium |
| CN101088183A (en) * | 2004-12-22 | 2007-12-12 | Lg化学株式会社 | Organic/inorganic composite microporous membrane and electrochemical device prepared thereby |
| CN102517673A (en) * | 2011-11-23 | 2012-06-27 | 浙江大学 | Method for preparing polymer porous nanofiber through mixed phase separation |
| CN103562284A (en) * | 2011-03-25 | 2014-02-05 | 丝路技术公司 | Cellulose-based materials comprising nanofibrillated cellulose from native cellulose |
-
2015
- 2015-01-16 CN CN201510024058.4A patent/CN104530464A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0919285A (en) * | 1995-07-06 | 1997-01-21 | Nisshinbo Ind Inc | Plant tissue culture medium |
| CN101088183A (en) * | 2004-12-22 | 2007-12-12 | Lg化学株式会社 | Organic/inorganic composite microporous membrane and electrochemical device prepared thereby |
| CN103562284A (en) * | 2011-03-25 | 2014-02-05 | 丝路技术公司 | Cellulose-based materials comprising nanofibrillated cellulose from native cellulose |
| CN102517673A (en) * | 2011-11-23 | 2012-06-27 | 浙江大学 | Method for preparing polymer porous nanofiber through mixed phase separation |
Non-Patent Citations (1)
| Title |
|---|
| 吕晓文等: ""离子液体再生纤维素水凝胶的形成机理及其在凝胶电泳中的应用"", 《高分子学报》 * |
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Application publication date: 20150422 |
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