Abstract
Both unmodified and a range of hydrophobically modified (acetylated) polydextrose and spruce galactoglucomannan preparations have been characterised for their solubility and phase separation in a number of solvents. Intrinsic viscosity and aggregate size determinations were used to establish the solubility parameters of polymers at 298 K. A slightly different polymer solubility parameter was found when pure solvents or solvent mixtures were used. This was interpreted as a difference in preferential solvation. The developed thermodynamic framework was successfully used to calculate solubility parameters of polymers from matching solvent solubility parameter and critical solubility parameters determined at phase boundary.
| Original language | English |
|---|---|
| Pages (from-to) | 302-316 |
| Number of pages | 15 |
| Journal | Physics and Chemistry of Liquids |
| Volume | 51 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - May 2013 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- acetylation
- galactoglucomannan
- intrinsic viscosity
- Martin equation
- polydextrose
- solubility parameter