Nanocomposites with percolated microporous networks were synthesized that are potentially applicable in molecular transport membrane. Nanoparticles were synthesized from tetrakis(4-aminophenyl)methane and hexamethylene diisocyanate by organic sol-gel polymerization to produce the 3D microporous organic molecular network. The nanoparticles dispersions were mixed with poly(amic acid) using various dianhydrides and diamines. Casting onto the glass plate followed by thermal curing gave nanocomposite film. We investigated on the morphological structures subjected to different reaction time and composition of nanoparticles. Continuous interconnected nanostructures in polymer matrix were prepared by controlling spinodal decomposition and reaction between numerous reactive amino and isocyanato functional groups of nanoparticles and polyimide chains. The microporosity of synthesized nanocomposite was characterized by carbon dioxide isotherm at 273K and their permeability of the membranes to small molecules such as water, carbon dioxide, and nitrogen was also measured.

Synthesis of nanocomposites with percolated microporous networks using organic sol-gel methods

243rd National Meeting (2012)

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