Introduction: microcrystalline cellulose (MCC) is the product of natural cellulose after acid hydrolysis to the ultimate degree of polymerization. Its color is white or near white, odorless and tasteless, and the particle size is generally about 2 ~ 80 μ m. It has the advantages of low density, high modulus, renewable, degradable and wide sources. It can be used as a reinforcing agent to improve the properties of composites.
Properties: microcrystalline cellulose generally has a low density of freeze-dried and high density with spray drying. The moisture content is about 5%. Microcrystalline cellulose can be dispersed but insoluble in water, insoluble in dilute acid, organic solvent and oil, swelled and partially dissolved in dilute alkali solution. In order to disperse the microcrystalline cellulose powder in water, white transparent gel or paste can be obtained.
Chemical properties: l, 4-bonded glucose baseline polymer. White odorless and tasteless substance, containing cellulose particles, which can be compressed by self adhesion and can be quickly dispersed in water. There are various grades, from dense, free flowing powder to rough, fluffy and non flowing materials. Insoluble in water, dilute acids and almost all organic solvents. Slightly soluble in sodium hydroxide solution and hot sodium casein solution. It is hydrophilic and lipophilic, can swell and moisten in water and is negatively charged, so it can adsorb metal ions and cationic substances in the solution.
Purpose 1 Filter aid: anti caking agent, binder; Compatibilizer; Fragmentation agent; dispersant; Tissue improver; Thickening agent; Water treatment agent. EEC regulations for beer purification.
Purpose 2 Suitable for textile, clothing, brewing, food, papermaking and other industries
Purpose 3 Adhesives and disintegrating agents for direct tablet pressing are also food additives
Purpose 4 As an anticoagulant, China can be used for powdered flavor, with a maximum usage of 50g/kg; It can also be used for ice cream, with a maximum dosage of 40g.kg; It can also be used for cream and vegetable fat powder, with a maximum dosage of 20.0g/kg.
Application 5. Anti caking agent; Emulsifier; Binder; Fragmentation agent; dispersant; Tissue improver; No nutritional bulking agent; Dietary fiber; Emulsion stabilizer; Heat stabilizer; Fast drying carrier; Differential powder and tablet pressing agent. According to EEC regulations, it can be used for high fiber bread; Low calorie candy, biscuits, cakes and bread; Fillers for pigments, spices and edible acids; Dehydrated food, snack food and bionic fruit slices, etc.
Uses 6. Many useful products can be derived by esterification or etherification of hydroxyl groups in cellulose polymers. Cellulose esters used in practice include cellulose nitrate, cellulose acetate, cellulose acetate butyrate and cellulose xanthate. Cellulose ethers include methyl cellulose, carboxymethyl cellulose, ethyl cellulose, hydroxyethyl cellulose, cyanoethyl cellulose, hydroxypropyl cellulose and hydroxypropyl methyl cellulose. In addition, there are ester ether mixed derivatives.
Usage 7. Anti caking agent; Emulsifier; Binder; Fragmentation agent; dispersant; Tissue improver; No nutritional bulking agent; Dietary fiber; Emulsion stabilizer; Heat stabilizer; Fast drying carrier; Differential powder and tablet pressing agent. According to EEC regulations, it can be used for high fiber bread; Low calorie candy, biscuits, cakes and bread; Fillers for pigments, spices and edible acids; Dehydrated food, snack food and bionic fruit slices, etc.
Purpose 8 Manufacture of nitric acid or cellulose acetate. For column chromatography. For filtering
Application 9. Microcrystalline cellulose is mainly used as heat free food additive, dispersant, filler for thin layer chromatography and column chromatography, color carrier for dyes and pigments, reinforcing filler, coating and emulsifier for thermosetting resin and thermosetting laminates. It can also be used in water-based paint and ceramic industry.