Polymeric Macroporous Structures Prepared via Pickering Emulsion Polymerization Targeted Applied for Solid Acid Catalysis
Paper ID : 1241-ICNS
Authors:
Saeed Ghanooni *1, naser nikfarjam2, Babak Karimi3
1Department of chemistry,Institute for advanced studies in basic sciences, Zanjan, Iran
2Institute for Advanced Studies in Basic Sciences, Zanjan, Iran
3Department of Chemistry, IASBS
Abstract:
In this work, a polymeric macroporous structures were successfully prepared through Pickering high internal phase emulsion polymerization [poly(HIPPE)]. For this, Fe3O4@SiO2 nanoparticles was synthesized via co-precipitation and then modified using triethoxyoctylsilane to bring hydrophobic nature to the nanoparticles to be act as water droplet solid stabilizer in the oil-in-water HIPPEs. Highly macroporous composite polymers were obtained by polymerization of HIPPEs followed by extraction of internal aqueous phase. The effect of nanoparticle and surfactant concentration as well as monomer/crosslinking agent molar ratio on morphology, pore and void size were investigated and optimized. Finally, the macroporous polymer was then modified using chlorosulfonic acid. This structure with high content of solid acid has been explored to investigate its catalytic efficiency towards eco-friendly production of biodiesel products via esterification of long-chain free fatty acids (FFA) to the respective fatty acid monoalkyl esters (FAMEs) with high efficiency (Yield ≥ 95%) at room temperature and under very mild reaction conditions.
Keywords:
Poly(HIPPE), Esterification, Long fatty acids, Magnetic nanoparticle, Crosslinked polystyrene.
Status : Abstract Accepted (Poster Presentation)