Synthesis and characterization of sodiumcarboxymethylcellulose from cotton, powder, microcrystalline and nanocellulose

Cotton cellulose, powder cellulose, microcrystalline cellulose and nanocellulose were carboxymethylated with monochloroacetic acid by the suspension method in an ethyl alcohol medium. The effects of reaction conditions such as cellulose materials, sodium hydroxide concentration, molar NaOH/anhydrogl...

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Bibliographic Details
Published in:Polymer engineering and science 2022-03, Vol.62 (3), p.677
Main Authors: Abdullaevich, Yuldoshov Sherzod, Ergashovich, Yunusov Khaydar, Abdukhalilovich, Sarymsakov Abdushkur, Shavkatogli, Goyipnazarov Ilhom
Format: Article
Language:English
Subjects:
Alcohol
Alcohol, Denatured
Cellulose
Composition
Cotton
Hydroxides
Methods
Polymerization
Polymers
Properties
Structure
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Summary:Cotton cellulose, powder cellulose, microcrystalline cellulose and nanocellulose were carboxymethylated with monochloroacetic acid by the suspension method in an ethyl alcohol medium. The effects of reaction conditions such as cellulose materials, sodium hydroxide concentration, molar NaOH/anhydroglucose unit ratio, monochloroacetic acid consumption, reaction temperature and etherification time on product quality, especially the degree of substitution, degree of polymerization and water solubility of sodium-carboxymethylcellulose, were studied. By controlling these parameters, completely water-soluble sodium-carboxymethyl-cellulose samples with a high degree of substitution within 0.75, 1.47, 0.88, and 1.23 were obtained from cotton cellulose, powder cellulose, microcrystalline and nanocellulose. The boundaries of complete solubility of the obtained sodium-carboxymethylcellulose were at low degrees of substitution (0.6, 0.44, 0.43, 0.33) and degrees of polymerization (880, 490, 240,150) obtained from cotton cellulose, powder cellulose, microcrystalline cellulose and nanocellulose, respectively.
ISSN:0032-3888
1548-2634
DOI:10.1002/pen.25874