Physical Chemistry or Biological Interfaces A. Baszkin & W. Norde,editors. Marcel Dekker,Inc. New York, 1999, hardbound,pp. ix + 836; $225 |
| |
| Authors: | Caret Jan van Oss |
| |
| Institution: | 1. CEOLUS R&2. D Department , Performance Materials R&3. D Center, Asahi Kasei Chemicals Corp. , Nobeoka, Miyazaki, Japan yaginuma.yb@om.asahi-kasei.co.jp;5. Department of Applied Chemistry , Faculty of Engineering, Miyazaki University , Nobeoka, Miyazaki, Japan |
| |
| Abstract: | The size distribution and morphology of microcrystalline cellulose (MCC) particles and the effect of pH on the rheological properties of their dilute aqueous dispersion were studied. The 0.3 wt% aqueous dispersion of fine particles (89 nm) also showed solid‐like dynamic viscoelastic behavior at low pHs (below pH 3), in contrast to liquid‐like behavior at high pHs. These findings suggest that at lower pHs the electrostatic repulsion force between MCC particles decreases to induce the aggregation of particles into a three‐dimensional network structure. The minimum empty space in the network structure is expected to be 450 nm or more. |
| |
| Keywords: | Microcrystalline cellulose dispersion dynamic viscoelasticity zeta potential network structure |
|
|
