Abstract:
Polybenzoxaxine (PBZ), a new type of additional-cure phenolic system, has been successfully synthesized by sol-gel method and ambient drying process to use as a precursor for producing carbon xerogels. In this work, we aim to study the effect of non-ionic (Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) on the pore structure of polybenzoxazine-based carbon xerogels. The chemical structure of the polybenzoxazine xerogel was confirmed by FTIR measurements. Thermal properties were characterized by DSC and TGA. The microstructure of organic xerogels was observed by field emission scanning electron microscope (FE-SEM, Hitachi/S-4800 model) and Quantachrome-Autosorp1-MP. The mesopore diameters in the range of 3.59-4.58 nm was obtained by using different concentrations of (Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol). At the concentration 0.030 M of surfactant showed the highest mesoporosity of 0.11 cc/g and At the concentration 0.090 M show the highest BET surface area of 19 m²/g.
