Abstract
Waterborne polyurethane (WBPU)/clay nanocomposites were synthesized using prepolymer process with different clay content (0-5 wt%) of organoclay cioisite 15A. The optimum dispersion temperature of clay in polyot was found to be 8o°C at 3 hours. The XRD confirmed the exfoliation dispersion of clay by polyol in WBPU/clay nanocomposite. IR and 1H-NMR spectroscopy confirmed the unreacted condition of clay component. Particle size of the WBPU/clay nanocomposite dispersion was increased with increasing of clay concentration. Water swelling was decreased with increasing of clay up to the optimum content (2 wt %) and then leveled off. The thermal stability, mechanical property and adhesive strength were increased with increasing clay content up to 2 wt% to reach its maximum value.
| Original language | English |
|---|---|
| Pages (from-to) | 251-258 |
| Number of pages | 8 |
| Journal | Macromolecular Symposia |
| Volume | 249-250 |
| DOIs | |
| State | Published - 2007 |
| Externally published | Yes |
Keywords
- Adhesion
- Clay
- Nanocomposites
- Polyurethanes
- Waterborne
ASJC Scopus subject areas
- Condensed Matter Physics
- Organic Chemistry
- Polymers and Plastics
- Materials Chemistry