Nanoporous Crystalline Phases of Poly(2,6-Dimethyl-1,4-phenylene)oxide

• DOI: 10.1021/cm200546r
• Publication Date: 2011-06-20T22:27:12Z
• Authors: Christophe Daniel; Simona Longo; Gianluca Fasano; Jenny G. Vitillo; Gaetano Guerra
• Keywords: Nanoporous

Crystalline modifications, exhibiting largely different X-ray diffraction patterns, have been obtained for poly(2,6-dimethyl-1,4-phenylene)oxide (PPO), by gel desiccation procedures as well solvent-induced crystallization of amorphous films. The choice the solvent allows controlling nature crystalline phase. Both and semicrystalline samples this commercial thermoplastic polymer exhibit a high uptake large guest molecules (like, e.g., benzene or carbon tetrachloride), both from vapor phases diluted aqueous solutions. Surprisingly, PPO present solubility much higher than fully samples. These sorption experiments, density measurements classical Brunauer–Emmett–Teller (BET) clearly indicate that are nanoporous. For these thermally stable PPO-based materials nanoporous phases, many applications predictable.