Equipe Physico-Chimie des Polymères / Polymer Chemical Physics

Equipe Physico-Chimie des Polymères / Polymer Chemical Physics Team
Diffusion coefficients of NaOH and NMMO during regeneration of
Avicel/8%NaOH/water gels and Solucell/NMMO solutions in a water bath of 25°C.
Cellulose concentration, wt%
0
3
5
6
7
DNaOH, × 10-10 m2/s
15.1a)
2.09
1.42
1.21
1.10
Cellulose
0
concentration,
wt%
0.3
DNMMO, × 10- 7.04b) 1.42
10
m2/s
1.1
2.3
3
6c)
8c)
10c)
12c)
1.31
1.20
1.25
1.10
0.98
0.81
0.50
a) Taken from: Handbook of Tables for Applied Engineering Science, 2nd ed.; CRC, Press:
Boca Raton, FL, 1983.
b) Calculated from the size of NMMO, using Stoke-Einstein formula.
c) Taken from: Biganska, O.; Navard, P. Biomacromolecules 2005, 6, 1948.
R.GAVILLON, T.BUDTOVA
« Kinetics of cellulose regeneration from cellulose-NaOH-water gels and comparison with cellulose-NMMOwater solutions », Biomacromolecules, 8, 424-432 (2007).
R.GAVILLON.
PhD thesis. Ecole des Mines de Paris, Sophia-Antipolis, France, 2007.
CEMEF – Mines ParisTech
http://www.cemef.mines-paristech.fr/
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