CN102817265A - Preparation method of arc-shaped microcrystalline cellulose - Google Patents
Preparation method of arc-shaped microcrystalline cellulose Download PDFInfo
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- CN102817265A CN102817265A CN2012102952556A CN201210295255A CN102817265A CN 102817265 A CN102817265 A CN 102817265A CN 2012102952556 A CN2012102952556 A CN 2012102952556A CN 201210295255 A CN201210295255 A CN 201210295255A CN 102817265 A CN102817265 A CN 102817265A
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- microcrystalline cellulose
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Abstract
The invention discloses a preparation method of an arc-shaped microcrystalline cellulose. The method is characterized by adopting wood pulp as raw materials to prepare the arc-shaped microcrystalline cellulose. The arc-shaped microcrystalline cellulose is prepared by the following raw materials in parts by weight: 1 part of wood pulp, 2-4 parts of water, and 0.05-0.15 part of concentrated sulfuric acid. The method adopts the wood pulp as raw materials to prepare the arc-shaped microcrystalline cellulose, so that the cost of the arc-shaped microcrystalline cellulose is greatly reduced, the yield of the arc-shaped microcrystalline cellulose is improved, and the application of the arc-shaped microcrystalline cellulose is expanded.
Description
Technical field
The present invention relates to a kind of preparation method of arc microcrystal cellulose.
Background technology
Microcrystalline cellulose is a kind of pure cellulose depolymerization product.By the native cellulose preparation, be odorless, tasteless, the free-pouring crystalline powder of ability.Acid and most organic solvents of water insoluble, dilution are slightly soluble in 20% aqueous slkali.Product is useful as drug excipient, tablet disintegrant, flow aid, filler, disintegrant, antiplastering aid, adsorbent, capsule diluent etc. on medical industry; In food industry, can make important function property foodstuff base material-dietary cellulosic, be a kind of desirable food supplement, shows multiple functions such as thickening, suspension, emulsification, stable, conformal, film forming, expanded, fresh-keeping, acidproof and health care; The thickener and the emulsifying agent that on coatings industry, utilize its thixotropy and thickening property to can be used as water based paint; It integrates filler, thickening and emulsification on cosmetics, and oily matter is had good emulsifying capacity; , wet method manufacturer fabricate-leather, make artificial leather surface smoothing, thickness even in producing as tackify and filler use.
The patent No. is 200710095908.5, denomination of invention is the Chinese invention patent of " a kind of preparation of sheet-like microcrystal cellulose and modification processing method ", discloses a kind of preparation method of sheet-like microcrystal cellulose and its surface modifying treatment.Its method for making is in water dispersion medium, and through obtaining sheet-like microcrystal cellulose with effect of sulfuric acid, the surface prepares through washing, filtration, drying through acetic acid esterification or SURFACTANT ADSORPTION modification more then.Wherein water and cellulosic mass ratio are 3-25: 1, and the sulfuric acid volumetric concentration is 30-80%, and temperature is 10-85 ℃, and the time is 5-120 minute.The mass ratio of acetates modifier or surfactant and microcrystalline cellulose is 0.1-5 in the modifying process: 100.This method mild condition, raw material is easy to get, and is simple to operate.The good physical and mechanical property that the modifier that makes not only keeps cellulose itself to have, its dispersive property also improves significantly, and has improved the compatibility with macromolecular material widely, has widened its Application Areas.
And the present report that also is not seen in the preparation method of arc microcrystal cellulose.
Summary of the invention
The technical issues that need to address of the present invention just are to overcome the defective of prior art; A kind of preparation method of arc microcrystal cellulose is provided, and it uses wood pulps to be the raw material production arc microcrystal cellulose, with the cost that reduces arc microcrystal cellulose greatly; Improve its output, enlarge its purposes.
For addressing the above problem, the present invention adopts following technical scheme:
The invention provides a kind of preparation method of arc microcrystal cellulose, said method prepares arc microcrystal cellulose for being raw material with the wood pulps.
The parts by weight of raw materials proportioning of preparation arc microcrystal cellulose is: 1 part of wood pulps: water 2-4 part, concentrated sulfuric acid 0.05-0.15 part;
Concrete preparation process is:
The first step is pulverized: become the fritter of about 2 centimetres of diameters to send into agitated reactor the wood pulps mechanical disintegration;
In second step, feed intake: in agitated reactor by weight wood pulps: the ratio of water=1:2-4 adds entry, adds the concentrated sulfuric acid by weight the ratio of wood pulps: the concentrated sulfuric acid=1:0.05-0.15;
The 3rd step, reaction: temperature 80-100 ℃, normal pressure, reaction time 0.5-4 hour;
In the 4th step, the pH value is regulated: regulate pH to 5-7 with NaOH;
The 5th step, washing, water soluble salt is removed in the soft water washing;
The 6th step, drying: weight content＜5% that is dried to water;
The 7th one, pulverize: semi-finished product are crushed to 100 orders;
The 8th step, packing.
The present invention uses wood pulps to be the raw material production arc microcrystal cellulose, with the cost that reduces arc microcrystal cellulose greatly, improves its output, enlarges its purposes.
The specific embodiment
The parts by weight of raw materials proportioning of preparation arc microcrystal cellulose is: 1 part of wood pulps: water 2-4 part, concentrated sulfuric acid 0.05-0.15 part;
Concrete preparation process is:
The first step is pulverized: become the fritter of about 2 centimetres of diameters to send into agitated reactor the wood pulps mechanical disintegration;
In second step, feed intake: in agitated reactor by weight wood pulps: the ratio of water=1:2-4 adds entry, adds the concentrated sulfuric acid by weight the ratio of wood pulps: the concentrated sulfuric acid=1:0.05-0.15;
The 3rd step, reaction: temperature 80-100 ℃, normal pressure, reaction time 0.5-4 hour;
In the 4th step, the pH value is regulated: regulate pH to 5-7 with NaOH;
The 5th step, washing, water soluble salt is removed in the soft water washing;
The 6th step, drying: weight content＜5% that is dried to water;
The 7th one, pulverize: semi-finished product are crushed to 100 orders;
The 8th step, packing.
The present invention uses wood pulps to be the raw material production arc microcrystal cellulose, with the cost that reduces arc microcrystal cellulose greatly, improves its output, enlarges its purposes.
What should explain at last is: obviously, the foregoing description only be for clearly the present invention is described and is done for example, and be not qualification to embodiment.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being amplified out thus or change still are among protection scope of the present invention.
Claims (2)
1. the preparation method of an arc microcrystal cellulose is characterized in that, said method prepares arc microcrystal cellulose for being raw material with the wood pulps.
2. the preparation method of arc microcrystal cellulose as claimed in claim 1 is characterized in that, the parts by weight of raw materials proportioning of preparation arc microcrystal cellulose is: 1 part of wood pulps: water 2-4 part, concentrated sulfuric acid 0.05-0.15 part;
Concrete preparation process is:
The first step is pulverized: become the fritter of about 2 centimetres of diameters to send into agitated reactor the wood pulps mechanical disintegration;
In second step, feed intake: in agitated reactor by weight wood pulps: the ratio of water=1:2-4 adds entry, adds the concentrated sulfuric acid by weight the ratio of wood pulps: the concentrated sulfuric acid=1:0.05-0.15;
The 3rd step, reaction: temperature 80-100 ℃, normal pressure, reaction time 0.5-4 hour;
In the 4th step, the pH value is regulated: regulate pH to 5-7 with NaOH;
The 5th step, washing, water soluble salt is removed in the soft water washing;
The 6th step, drying: weight content＜5% that is dried to water;
The 7th one, pulverize: semi-finished product are crushed to 100 orders;
The 8th step, packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102952556A CN102817265A (en) | 2012-08-20 | 2012-08-20 | Preparation method of arc-shaped microcrystalline cellulose |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102952556A CN102817265A (en) | 2012-08-20 | 2012-08-20 | Preparation method of arc-shaped microcrystalline cellulose |
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| CN102817265A true CN102817265A (en) | 2012-12-12 |
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| CN2012102952556A Pending CN102817265A (en) | 2012-08-20 | 2012-08-20 | Preparation method of arc-shaped microcrystalline cellulose |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103966878A (en) * | 2014-01-02 | 2014-08-06 | 大连工业大学 | Method for preparing microcrystalline cellulose by ionic liquid |
| CN103981749A (en) * | 2014-01-02 | 2014-08-13 | 大连工业大学 | Method used for preparing microcrystalline cellulose from reed pulp |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1340651A (en) * | 2000-08-29 | 2002-03-20 | 上海大杨保健品科技发展有限公司 | Process for preparing arc microcrystal cellulose |
| WO2002057540A1 (en) * | 2001-01-05 | 2002-07-25 | International Paper Company | Microcrystalline cellulose manufacture |
| CN101070352A (en) * | 2007-03-27 | 2007-11-14 | 鲁东大学 | Method for preparing sheet-like microcrystal cellulose and modification processing method |
| RU2395636C1 (en) * | 2009-07-13 | 2010-07-27 | Учреждение Российской академии наук Институт химии и химической технологии Сибирского отделения РАН (ИХХТ СО РАН) | Method for production of microcrystalline cellulose from autohydrolised wood |
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2012
- 2012-08-20 CN CN2012102952556A patent/CN102817265A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1340651A (en) * | 2000-08-29 | 2002-03-20 | 上海大杨保健品科技发展有限公司 | Process for preparing arc microcrystal cellulose |
| WO2002057540A1 (en) * | 2001-01-05 | 2002-07-25 | International Paper Company | Microcrystalline cellulose manufacture |
| CN101070352A (en) * | 2007-03-27 | 2007-11-14 | 鲁东大学 | Method for preparing sheet-like microcrystal cellulose and modification processing method |
| RU2395636C1 (en) * | 2009-07-13 | 2010-07-27 | Учреждение Российской академии наук Институт химии и химической технологии Сибирского отделения РАН (ИХХТ СО РАН) | Method for production of microcrystalline cellulose from autohydrolised wood |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103966878A (en) * | 2014-01-02 | 2014-08-06 | 大连工业大学 | Method for preparing microcrystalline cellulose by ionic liquid |
| CN103981749A (en) * | 2014-01-02 | 2014-08-13 | 大连工业大学 | Method used for preparing microcrystalline cellulose from reed pulp |
| CN103966878B (en) * | 2014-01-02 | 2016-05-11 | 大连工业大学 | Ionic liquid is prepared the method for microcrystalline cellulose |
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Application publication date: 20121212 |