CN1448427A - Water dispersible nanometer avicel, its prep.and colloid therefrom - Google Patents
Water dispersible nanometer avicel, its prep.and colloid therefrom Download PDFInfo
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Abstract
The nanometer microcrystal cellulose powder is surface modified nanometer microcrystal cellulose with added hydrophilic colloid in the amount of 5-150 wt% of nanometer microcrystal cellulose and has grain size of 6.3-100 nanometers. During its preparation, hydrophilic colloid is dispersed homogeneously into water dispersed medium of surface modified nanometer microcrystal cellulose and the mixture is then dried and crushed. The nanometer microcrystal cellulose is easy to be water dispersed to form colloid, which is homogeneous and high in gluing strength and has the small size of microcrystal cellulose maintained, so that it has wide and unique application foreground in food production, medicine, papermaking, textile, new material preparation and other fields.
Description
Technical field
The present invention relates to the colloid of a kind of easy water dispersion nano microcrystal cellulose powder end and preparation method thereof and its formation.
Technical background
Mierocrystalline cellulose is the most extensive, the inexhaustible renewable resources in source that occurring in nature exists.Occur on earth after the crisis of Nonrenewable energy resources such as oil Mierocrystalline cellulose being degraded, deep processing is to obtain the focus that industrial chemicals and intermediate are various countries' research always.
Ultra-fine and nano cellulose crystal has been widely used, and can be used as the additive and the weighting agent of food, field of medicaments, also can be used as the raw material in the novel material preparation.
At Chinese invention patent application (application number 00117261.1, application number 01107523.6) disclosed the method that has cellulose I crystal formation, crystal form of cellulose II and cellulose I and the nano cellulose crystal of II mixing crystal formation with natural cellulose preparation in, its profile can be bar-shaped, spherical or the ellipsoid shape, and the size of particle is between 5～100nm.These nano cellulose crystals have the physics-chem characteristic of the ordinary microcrystalline cellulose of differing from, but nano-cellulose has the shortcoming that is easy to reunite.
In United States Patent (USP) 3539365, disclosed in microfine cellulose crystallite (the particle diameter minimum reaches micron order) by blend adding carboxymethyl cellulose, to overcome the reunion that the microfine cellulose crystallite takes place because of surperficial hydrogen bond action.But little during to nano level for the particle diameter of Microcrystalline Cellulose, this patent is not done any relating to.
U.S. FMC Corp. has disclosed the novel stabilising preparation of compositions and the purposes of peptization fast in Chinese invention patent CN1317989A, it contains the wet filter mud cake of ground colloidal microcrystalline cellulose, with ι-carrageenin dry processing together; Its purposes in stable aqueous food has also been described in this invention.The particle diameter to used Microcrystalline Cellulose is not illustrated in claims of this patent.In the specification sheets of this patent, point out that specially this invents described its particle diameter of colloidal state body Microcrystalline Cellulose is the 0.1-10 micron, does not relate to the Microcrystalline Cellulose of particle diameter less than 100 nanometers.
U.S. food machinery and chemical company have disclosed the ultra-fine microcrystalline cellulose compositions of producing high stable suspension and/or dispersion in Chinese invention patent CN1278830A.Said composition includes: have the abrasive of dual-use function, promptly help to reduce the particle diameter of Microcrystalline Cellulose and the performance or the batching of hope added in the dispersion or other products of wherein having used said composition.The median size of pointing out used Microcrystalline Cellulose in claims of this patent does not specially relate to the Microcrystalline Cellulose of particle diameter less than 100 nanometers yet in the scope of 0.1-0.7 micron.In addition, this patent needs the blending abrasive, by mechanical effect the levigate scope of Microcrystalline Cellulose to the 0.1-0.7 micron.
In Chinese invention patent application 02115281.0 (publication number CN1386763A, open day on December 25th, 2002), a kind of Yishui River dispersive nano cellulose crystal and method for making have been disclosed.This method is carried out carboxymethyl-modification by the nano micro crystal cellulose surface, resulting nano micro crystal cellulose powder is easy to water-dispersion, the profile of Microcrystalline Cellulose is bar-shaped, spherical or the ellipsoid shape, the size of particle is between 5～100nm, particulate inside still is Mierocrystalline cellulose, both can have cellulose I crystal formation, crystal form of cellulose II, also can have the crystal formation that mixes of cellulose I and II.But it is not very big that the Microcrystalline Cellulose that this method makes becomes the intensity behind the glue.
Summary of the invention
The objective of the invention is to overcome in the existing invention and do not relate to easy water-dispersion and big this deficiency of nano micro crystal cellulose of gelling strength, providing a kind of is easy to water-dispersion and can forms colloidal nano micro crystal cellulose powder, it not only can solve the reunion that takes place because of hydrogen bond action between the nano cellulose crystal effectively, redispersion is in water and form stable colloid more fast and equably, and gelling strength is big.
Another object of the present invention provides this easy water-dispersion and becomes the preparation method of the good nano micro crystal cellulose powder of colloidality.
A further object of the present invention provides the colloid that is formed by this nano micro crystal cellulose powder.
Provided by the inventionly be easy to water-dispersion and can form colloidal nano micro crystal cellulose powder, be to be added with the lyophilic colloid that accounts for nano micro crystal cellulose weight 5%～150% in the nano micro crystal cellulose of surface modification, the size of particles of Microcrystalline Cellulose is between 6.3～100 nanometers.
Wherein surface modification is for carrying out carboxymethyl-modification, hydroxyethylation modification, hydroxypropylation modification or the ultrasonic activation modification being carried out on the surface of nano micro crystal cellulose to the surface of nano micro crystal cellulose.
Lyophilic colloid can be selected from dextran, gelling gum, xanthan gum, Viscogum BE, konjak gum, guar gum, gum arabic, tragacanth gum, carrageenin, sodium alginate, Protanal Ester SD-LB, agar-agar, methylcellulose gum, Natvosol, hydroxypropylcellulose, carboxymethyl cellulose, Xylo-Mucine, cationic starch, amphoteric starch, hydroxyethylamyle, hydroxypropylated starch, carboxymethyl starch, sodium starch glycolate, cyclodextrine, gelatin, Sodium Caseinate, high methoxyl pectin, the mixture of the different proportionings of one or more in the low-methoxy pectin.
Lyophilic colloid accounts for the weight preferred 15%～75% of nano micro crystal cellulose.
Preferred 30～100 nanometers of the size of particles of Microcrystalline Cellulose.
Provided by the inventionly be easy to water-dispersion and form colloidal nano micro crystal cellulose powder, its preparation method is in the water dispersion medium of the nano micro crystal cellulose of surface modification, add the lyophilic colloid account for nano micro crystal cellulose weight 5%～150% and homodisperse in addition, make through super-dry, pulverizing then.
Wherein surface modification is for carrying out carboxymethyl-modification, hydroxyethylation modification, hydroxypropylation modification or the ultrasonic activation modification being carried out on the surface of nano micro crystal cellulose to the surface of nano micro crystal cellulose.
Wherein the ultrasonic activation modification is at normal temperatures, to wet cake of nano micro crystal cellulose or water dispersion, carries out ultrasonication that power is at least 1 watt/gram nano micro crystal cellulose more than 5 minutes, preferred 5～30 minutes.Nano micro crystal cellulose through supersound process not only can be uniformly dispersed, and more active site also appears in its surface.
This nano micro crystal cellulose forms colloid through water-dispersion.
Provided by the inventionly be easy to water-dispersion and can form colloidal nano micro crystal cellulose powder, the size of particles of its Microcrystalline Cellulose is between 6.3 nanometers～100 nanometers, its profile is bar-shaped, spherical or the ellipsoid shape, and microcrystal grain inside remains the mixing crystal formation of cellulose I crystal formation, crystal form of cellulose II or cellulose I and cellulose II.This nano micro crystal cellulose powder both had been easy to water-dispersion and had formed colloid, and gelling strength is big, and the grain of Microcrystalline Cellulose is through little.
The carboxymethyl-modification of nano micro crystal cellulose, hydroxyethylation modification or the modification of hydroxypropylation modified surface can be adopted prior art in the preparation of this nano micro crystal cellulose powder.Add the lyophilic colloid homodisperse in the water dispersion medium of the nano micro crystal cellulose after the modification again, dry then, pulverize, employing all be ordinary method.
Be easy to water-dispersion and form colloidal nano micro crystal cellulose powder owing to provided by the invention, can make the nano micro crystal cellulose particle easily be dispersed in the aqueous medium, and gelling strength is big, Microcrystalline Cellulose keeps grain through little characteristics, thereby makes this material have wide unique application prospect at aspects such as food, medicine, papermaking, weaving and novel material preparations.
Embodiment
Embodiment 1
With the 160g particle diameter at the wet cake of the Microcrystalline Cellulose of 30～50nm, through the ultrasonication of 200 watts of power after 12 minutes and the moderately viscous carboxymethyl cellulose of 15g place mixing tank.The solids ratios of forming this mixture is: 50 weight part nano micro crystal celluloses, 15 weight part carboxymethyl celluloses.Open mixing machine, till this composition mixes.Dry then, pulverize, get product.
Embodiment 2
With the 150g median size is the wet cake of Microcrystalline Cellulose of 55nm, through the ultrasonication of 200 watts of power after 10 minutes and 72.5g KAPPA I type carrageenin place mixing tank.The solids ratios of composition mixture is: 50 weight part nano micro crystal celluloses, 72.5 weight part KAPPA I type carrageenins.Open mixing machine, till composition mixes.Dry then, pulverize, get product.
Embodiment 3
With the 100g median size is the wet cake of Microcrystalline Cellulose of 65nm, through the ultrasonication of 200 watts of power after 8 minutes and the mixture of 15g carboxymethyl cellulose and hydroxypropylated starch place mixing tank.The solids ratios of forming this mixture is: 50 weight part nano micro crystal celluloses, 7 weight part carboxymethyl celluloses, 8 weight part hydroxypropylated starchs.Open mixing machine, till composition mixes.Dry then, pulverize, get product.
Embodiment 4
With the 100g particle diameter at the wet cake of the Microcrystalline Cellulose of 50～80nm, through the ultrasonication of 200 watts of power after 10 minutes and 40g high methoxyl pectin and 20g Protanal Ester SD-LB place mixing tank together.The solids ratios of forming this mixture is: 50 weight part nano micro crystal celluloses, 40 weight part high methoxyl pectin and 20 weight part Protanal Ester SD-LBs.Open mixing machine, till composition mixes.Dry then, pulverize, get product.
Embodiment 5
In the water dispersion of 1000g nano cellulose crystal, wherein contain the nano cellulose crystal of 50g particle diameter at 30～50nm.Add 12.5g NaOH therein, stir and dissolve fully until NaOH.Add Mono Chloro Acetic Acid 5g again, constantly stir.Handle 12h with sonic oscillation under 45 ℃, washing and dehydration get the wet cake of the Microcrystalline Cellulose that has carried out carboxymethyl-modification in the 103g surface.
The 103g surface is placed mixing tank through the wet cake of Microcrystalline Cellulose and the 45g cyclodextrine of carboxymethyl-modification.The solids ratios of composition mixture is: 53 weight part surfaces are through the nano micro crystal cellulose of carboxymethyl-modification, 45 weight part cyclodextrines.Open mixing machine, till composition mixes.Dry then, pulverize, get product.
Embodiment 6
In the water dispersion of 1000g nano cellulose crystal, wherein contain the nano cellulose crystal of 50g particle diameter at 50～80nm.Add 12.5g NaOH therein, stir and dissolve fully until NaOH.Add oxyethane 5g again, constantly stir.Handle 2.5h with sonic oscillation under 80 ℃, washing and preliminarily dried get the wet cake of the Microcrystalline Cellulose that has carried out the hydroxyethylation modification in the 103g surface.
The 103g particle diameter at 50～80nm, the wet cake of surperficial Microcrystalline Cellulose through the hydroxyethylation modification, is placed mixing tank with 20g cyclodextrine and 10g guar gum.The solids ratios of composition mixture is: 52 weight part surfaces are through the nano micro crystal cellulose of hydroxyethylation modification, 20 weight part cyclodextrines, 10 parts of guar gums.Open mixing machine, till composition mixes.Dry then, pulverize, get product.
Embodiment 7
In the water dispersion of 1000g nano cellulose crystal, wherein contain the nano cellulose crystal of 50g particle diameter at 50～80nm.Add 12.5g NaOH therein, stir and dissolve fully until NaOH.Add propylene oxide 7g again, constantly stir.Handle 2.5h with sonic oscillation under 80 ℃, washing and preliminarily dried get the wet cake of the Microcrystalline Cellulose that has carried out the hydroxypropylation modification in the 130g surface.
The 130g particle diameter at 50～80nm, the wet cake of surperficial Microcrystalline Cellulose through the hydroxypropylation modification, is placed mixing tank with 25g konjak gum and 20g hydroxypropylcellulose.The solids ratios of composition mixture is: 53 weight part surfaces are through the nano micro crystal cellulose of hydroxypropylation modification, 25 weight part konjak gums, 20 weight part hydroxypropylcelluloses.Open mixing machine, till composition mixes.Dry then, pulverize, get product.
Embodiment 8
To join in the 1900g deionized water by the Microcrystalline Cellulose powder 100g of embodiment 1 preparation, after preliminary the stirring, with the clarifixator homogeneous once, get the water-dispersion jello of nano micro crystal cellulose.Leave standstill after three months and observe, find that this gel is still very stable.
Claims (9)
1, a kind ofly is easy to water-dispersion and can form colloidal nano micro crystal cellulose powder, be to be added with the lyophilic colloid that accounts for nano micro crystal cellulose weight 5%～150% in the nano micro crystal cellulose of surface modification, the size of particles of Microcrystalline Cellulose is between 6.3～100 nanometers.
2, the nano micro crystal cellulose powder of claim 1, wherein surface modification is carboxymethyl-modification, hydroxyethylation modification, hydroxypropylation modification or ultrasonic activation modification.
3, claim 1 or 2 nano micro crystal cellulose powder, wherein lyophilic colloid is selected from dextran, gelling gum, xanthan gum, Viscogum BE, konjak gum, guar gum, gum arabic, tragacanth gum, carrageenin, sodium alginate, Protanal Ester SD-LB, agar-agar, methylcellulose gum, Natvosol, hydroxypropylcellulose, carboxymethyl cellulose, Xylo-Mucine, cationic starch, amphoteric starch, hydroxyethylamyle, hydroxypropylated starch, carboxymethyl starch, sodium starch glycolate, cyclodextrine, gelatin, Sodium Caseinate, high methoxyl pectin, the mixture of the different proportionings of one or more in the low-methoxy pectin.
4, claim 1 or 2 nano micro crystal cellulose powder, wherein to account for the weight of nano micro crystal cellulose be 15%～75% to lyophilic colloid.
5, claim 1 or 2 nano micro crystal cellulose powder, wherein the size of particles of Microcrystalline Cellulose is 30～100 nanometers.
6, the preparation method of the arbitrary nano micro crystal cellulose powder of claim 1～5, be in the water dispersion medium of the nano micro crystal cellulose of surface modification, add the lyophilic colloid account for nano micro crystal cellulose weight 5%～150% and homodisperse in addition, make through super-dry, pulverizing then.
7, the preparation method of claim 6, wherein the ultrasonic activation modification is at normal temperatures, to wet cake of nano micro crystal cellulose or water dispersion, carries out power and is at least the ultrasonication of 1 watt/gram nano micro crystal cellulose more than 5 minutes.
8, the preparation method of claim 7, wherein ultrasonic treatment time is 5～30 minutes.
9, the arbitrary nano micro crystal cellulose powder of claim 1～5 is through the colloid of water-dispersion formation.
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| CN102471537A (en) * | 2009-06-30 | 2012-05-23 | 阿尔伯塔创新技术未来 | Aircraft anti-icing fluids formulated with nanocrystalline cellulose |
| CN103174046A (en) * | 2013-04-11 | 2013-06-26 | 浙江理工大学 | Method for preparing nanometer microcrystalline cellulose by combining acid hydrolysis and ultrasonic treatment |
| CN104114037A (en) * | 2012-02-14 | 2014-10-22 | 旭化成化学株式会社 | Cellulose composition |
| CN105597101A (en) * | 2015-09-28 | 2016-05-25 | 广东国源国药制药有限公司 | Innovative pharmaceutic adjuvant colloidal microcrystalline cellulose and preparation method thereof |
| CN105916929A (en) * | 2014-01-17 | 2016-08-31 | 日本制纸株式会社 | Dry solid of anion-modified cellulose nanofiber and method for producing same |
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| CN108137864A (en) * | 2015-09-17 | 2018-06-08 | 王子控股株式会社 | Composition, microfibre shape cellulose contain the preparation method that object and microfibre shape cellulose contain object |
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| JPH0770365A (en) * | 1993-09-02 | 1995-03-14 | Asahi Chem Ind Co Ltd | Water-dispersible composition |
| CN1164617C (en) * | 2002-05-27 | 2004-09-01 | 中国科学院广州化学研究所 | Surface modified nano cellulose crystal and its preparing process |
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| CN107252082A (en) * | 2012-02-14 | 2017-10-17 | 旭化成株式会社 | Cellulose composition |
| CN103174046A (en) * | 2013-04-11 | 2013-06-26 | 浙江理工大学 | Method for preparing nanometer microcrystalline cellulose by combining acid hydrolysis and ultrasonic treatment |
| CN103174046B (en) * | 2013-04-11 | 2015-08-26 | 浙江理工大学 | A kind of acid hydrolysis and ultrasonic process coordinate system are for the method for nano micro crystal cellulose |
| CN105916929A (en) * | 2014-01-17 | 2016-08-31 | 日本制纸株式会社 | Dry solid of anion-modified cellulose nanofiber and method for producing same |
| US11603415B2 (en) | 2014-01-17 | 2023-03-14 | Nippon Paper Industries Co., Ltd. | Dry solids of anionically modified cellulose nanofibers and processes for preparing them |
| CN108137864B (en) * | 2015-09-17 | 2021-10-22 | 王子控股株式会社 | Composition, microfibrous cellulose-containing material, and process for producing microfibrous cellulose-containing material |
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| CN105597101A (en) * | 2015-09-28 | 2016-05-25 | 广东国源国药制药有限公司 | Innovative pharmaceutic adjuvant colloidal microcrystalline cellulose and preparation method thereof |
| CN107915869A (en) * | 2017-11-21 | 2018-04-17 | 厦门欧凯科技有限公司 | A kind of water dispersible microcrystalline cellulose, Preparation method and use |
| CN108547176A (en) * | 2018-04-20 | 2018-09-18 | 中国人民大学 | A method of repairing paper material face crack |
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Assignee: Fujian Quanzhou Weibo Food Co.,Ltd. Assignor: Guangzhou Inst. of Chemistry, Chinese Academy of Sciences Contract fulfillment period: 2009.2.15 to 2015.2.15 contract change Contract record no.: 2009440000264 Denomination of invention: Water dispersible nanometer avicel, its prep.and colloid therefrom Granted publication date: 20080109 License type: Exclusive license Record date: 2009.4.16 |
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