Home > Products > Basic-concepts-of-cellulose-ether > Basic concepts of cellulose ether

Basic concepts of cellulose ether

Cellulose derivatives in which the hydroxyl group on the cellulose or completely replaced cellulose derivative by ether group. In dry-mix mortar products,the addition of cellulose ether is an important additive in dry-mixed mortar products and can significantly improve the performance of the mortar.

Inquire Now

Physical And Chemical Propertices

Classification of cellulose ether.

Ø According to the different chemical structures of ether substituent, cellulose ether can be divided into anionic, cat-ionic and non-ionic cellulose ether.

Ø Non-ionic cellulose ether can be divided into water-soluble cellulose ether and oil-soluble cellulose ether.Non-ionic water-soluble ether is mainly used in mortar products. Mono-substituted ether is cellulose ether have only one type of substituent on the molecular chain,a mixed ether is a cellulose ether with two or more different substituent on the molecular chain.

Ø Ionic cellulose ether is unstable in the presence of calcium ions, but non-ionic water-soluble cellulose ether is widely used in the building materials industry because of their suspension stability and water retention.

Ø Non-ionic cellulose ether can be divided into water-soluble cellulose ether and oil-soluble cellulose ether.Non-ionic water-soluble ether is mainly used in mortar products.

Ø Mono-substituted ether is cellulose ether have only one type of substituent on the molecular chain,a mixed ether is a cellulose ether with two or more different substituent on the molecular chain.

Ø Cellulose ether used in the building materials industry are MC, HPMC, HEMC, HEC, EHEC, etc.HPMC and HEMC are widely used in dry mix mortar products due to their own properties.

Specification

Synthesis mechanism of cellulose ether

1. R—X:inorganic acid ester X: halide, Chloride is used in industrial, R—CL，for example:CH3Cl. reaction consumes equivalent amount of alkali.

2. The Alkali catalyzed epoxides addition to the hydroxyl groups of cellulose does not consume alkali and the reaction can be continued continuously.

Production process

The production process of cellulose ether mainly consists of four parts: preparation of raw materials, alkalization, etherification and neutralization,treatment.

The production process and the control of process parameters are the guarantee of the quality of cellulose ether products.

Packaging And Storage

Molecular structure of cellulose and cellulose ether

MHEC is soluble in water