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Water dispersible nanometer avicel, its prep.and colloid therefrom

A technology of microcrystalline cellulose and nano-microcrystalline, which is applied in the field of easily water-dispersible nano-microcrystalline cellulose powder and its preparation method and the colloid formed by it, can solve the problems of high gel strength and the like, achieve high gel strength, The effect of broad application prospects

Inactive Publication Date: 2008-01-09
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the deficiency of the nano-microcrystalline cellulose that does not relate to easy water dispersion and high colloidal strength in the prior invention, and provides a kind of nano-microcrystalline cellulose powder that is easy to water disperse and can form a colloid, which not only It can effectively solve the agglomeration of nanocellulose crystals due to hydrogen bonding, and can be redispersed in water quickly and evenly to form a stable colloid with high gel strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 160g of wet cake of microcrystalline cellulose with a particle size of 30-50nm, after being subjected to ultrasonic treatment with 200 watts of power for 12 minutes, and 15g of medium viscosity carboxymethyl cellulose are placed in a mixer. The proportion of solids composing the mixture is: 50 parts by weight of nanocrystalline cellulose and 15 parts by weight of carboxymethyl cellulose. Turn on the mixer until the composition is uniformly mixed. Then it is dried and crushed to obtain the finished product.

Embodiment 2

[0027] 150g of the wet cake of microcrystalline cellulose with an average particle size of 55nm was subjected to 200 watts of ultrasonic treatment for 10 minutes, and 72.5g of KAPPA Type I carrageenan was placed in a mixer. The solid ratio of the composition mixture is: 50 parts by weight of nanocrystalline cellulose and 72.5 parts by weight of KAPPA I type carrageenan. Turn on the mixer until the composition is uniformly mixed. Then it is dried and crushed to obtain the finished product.

Embodiment 3

[0029] After 100 g of the wet cake of microcrystalline cellulose with an average particle size of 65 nm was treated with 200 watts of ultrasonic for 8 minutes, and 15 g of a mixture of carboxymethyl cellulose and hydroxypropyl starch were placed in a mixer. The proportion of solids composing the mixture is: 50 parts by weight of nanocrystalline cellulose, 7 parts by weight of carboxymethyl cellulose, and 8 parts by weight of hydroxypropyl starch. Turn on the mixer until the composition is uniformly mixed. Then it is dried and crushed to obtain the finished product.

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PUM

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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 [0001] The invention relates to an easily water-dispersible nano microcrystalline cellulose powder, a preparation method thereof, and a colloid formed by the nanometer microcrystalline cellulose powder. technical background [0002] Cellulose is the most widely available source in nature, an inexhaustible and inexhaustible renewable resource. After the emergence of the crisis of non-renewable energy such as petroleum on the earth, the degradation of cellulose and deep processing to obtain chemical raw materials and intermediates have always been research hotspots in various countries. [0003] Ultrafine and nano cellulose crystals have a wide range of uses, can be used as additives and fillers in the food and medical fields, and can also be used as raw materials in the preparation of new materials. [0004] The Chinese invention patent application (application number 00117261.1, application number 01107523.6) has disclosed the use of natural cellulose to prepare n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L1/02C08J3/12
Inventor 丁恩勇
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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