Effect of Preparation Method on the Morphology of a Novel Nanoclay –Reinforced Phenolic -derived Carbon Aerogel Synthesized by the pressurized sol -gel polymerization

This research used the pressurized sol-gel polymerization method and ambient drying conditions, followed by the carbonization step to synthesize carbon nanocomposite aerogel based on novolac/nanoclay with more than ۹۰% porosity. To check the effect of preparation method on the effective dispersion and distribution of clay nanoparticles in the novolac polymer base, two preparation methods, with using methanol and ۲-propanol, with ۶ units of difference in solubility parameter, as the nanoparticle dispersing media have been used. It was found that the use of methanol solvent in the synthesis of Novolac/nanoclay aerogel resulted in a significant improvement in the distribution of clay nanoparticles and the creation of an intercalated microstructure in the final nanocomposite.

کلیدواژه ها:

Polymer aerogel ، Novolac ، Nanoclay ، Organic solvent ، Sol-Gel polymerization