Skip to Main content Skip to Navigation
Journal articles

Influence of ZnO on the properties of dilute and semi-dilute cellulose-NaOH-water solutions

Abstract : The influence of ZnO as cellulose-8%NaOH-water solution stabilizer against gelation is studied. Cellulose intrinsic viscosity in 8%NaOH-water as a function of solution temperature is investigated in the presence and absence of ZnO. The addition of ZnO did not bring any improvement in terms of solvent thermodynamic quality. Non-dissolved ZnO particles were observed above 0.8-0.9% ZnO in 8%NaOH-water. Gelation of cellulose-8%NaOH solutions with and without ZnO are studied for various cellulose and ZnO concentrations (4-6% and 0-1.5%, respectively) in a wide range of temperatures (-5 °C to 50 °C). Gelation times were exponentially increasing with increasing ZnO concentration and with decreasing cellulose concentration and solution temperature. Gelation times of cellulose-NaOH-water-ZnO systems were found to follow a semi-empirical model correlating these three parameters. We suggest that ZnO is acting as water molecular "binder" stabilizing cellulose-NaOH-water solutions.
Document type :
Journal articles
Complete list of metadata

Cited literature [28 references]  Display  Hide  Download

https://hal-mines-paristech.archives-ouvertes.fr/hal-00595331
Contributor : Magalie Prudon <>
Submitted on : Tuesday, December 11, 2012 - 4:40:43 PM
Last modification on : Thursday, September 24, 2020 - 5:22:55 PM
Long-term archiving on: : Tuesday, March 12, 2013 - 2:25:11 AM

File

Liu-Cellulose_2012.pdf
Files produced by the author(s)

Identifiers

Citation

Weiqing Liu, Tatiana Budtova, Patrick Navard. Influence of ZnO on the properties of dilute and semi-dilute cellulose-NaOH-water solutions. Cellulose, Springer Verlag, 2011, 18 (4), pp.911-920. ⟨10.1007/s10570-011-9552-9⟩. ⟨hal-00595331⟩

Share

Metrics

Record views

395

Files downloads

1208