Classification and Identification of Cellulose


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2020-09-04

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Classification and Identification of Cellulose
 
Classification of Cellulose Ethers
1. Ionic
Sodium Carboxymethyl Cellulose (NaC Cellulose)
Sodium carboxymethyl hydroxyethyl cellulose (NaCMHEC)
 
2. Non-ionic
Methyl cellulose ether (cellulose)
Hydroxyethyl cellulose ether (HEC)
Hydroxyethyl methyl cellulose ether (MHEC)
Grade: LH40M,LH70M,
Hydroxypropyl methyl cellulose ether (MHPC)
 
cellulose ether quality discrimination:
 
Methoxy content quality impact: water retention thickening function
Hydroxyethoxy/hydroxypropoxy content quality influence: the higher the content, the better the water retention.
Viscosity quality influence: the higher the degree of polymerization, the higher the viscosity, the better the water retention.
Fineness quality impact: the finer the dispersion in the mortar, the faster the more uniform, the better the relative water retention
Transmissivity quality influence: higher indicates a more uniform degree of polymerization and less impurities
Effect of gel temperature quality: the gel temperature for construction is about 75 ℃
Moisture quality impact:<5%, cellulose ether is easy to absorb moisture, to seal preservation
Impact of ash quality:<3%, the higher the ash, the more impurities
PH value quality influence: close to neutral, cellulose ether in PH:2-11 between stable performance
 
 

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