Interaction between chitosan-based clay nanocomposites and cellulose in a chemical pulp suspension.
Carbohydr Polym
; 137: 375-381, 2016 Feb 10.
Article
em En
| MEDLINE
| ID: mdl-26686141
ABSTRACT
Quaternized chitosan/organic montmorillonite (QCS/OMMT) nanocomposites were synthesized under microwave irradiation. XRD and TEM analyses confirmed that QCS intercalated into the interlayer of OMMT and clay layers distributed uniformly in QCS matrix. QCS/OMMT nanocomposites were used as retention and drainage-aid agents in pulp suspension, during which the interface behavior of positively charged QCS/OMMT nanocomposites on negatively charged cellulosic substrate and CaCO3 substrate was investigated. With the addition of QCS/OMMT nanocomposites, the particle size of cellulosic substrate increased, while the beating degree and the total residual carbohydrate concentration decreased. The results indicated that QCS/OMMT nanocomposite made a difference in paper making process through the charge patch interaction. Moreover, QCS/OMMT nanocomposites had a strong interaction with CaCO3, which was significant in fiber fines retention and paper production. When the mass ratio of QCS to OMMT was 81, the QCS/OMMT nanocomposite demonstrated the strongest retention and drainage-aid effect.
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Base de dados:
MEDLINE
Assunto principal:
Bentonita
/
Celulose
/
Quitosana
/
Nanocompostos
Idioma:
En
Ano de publicação:
2016
Tipo de documento:
Article