Structure and properties relationships for aromatic polyimides and their derived carbon membranes: Experimental and simulation approaches

Article Abstract:

The factors of the chemical structure and physical properties of rigid polyamides in determining the performance of derived carbon membranes were investigated through both the experimental and simulation methods. The high FFV values and low thermal stability of polyimide produce carbon membranes with bigger pore and higher gas permeability at low pyrolysis temperatures.

Carbon, Pyrolysis, Properties, Chemical properties

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Formation and growth of copper nanoparticles from ion-doped precursor polyimide layers

Article Abstract:

The process of formation of hybrid nanocomposites consisting of a thin polyimide layer containing copper nanoparticles of varying sizes (3-10 nm in diameter) is described. In this system, precursor layers in which copper ions are fully or modestly doped in a chemically modified polyimide matrix are annealed in a hydrogen atmosphere at a constant heating rate.

Research and Development in the Physical, Engineering, and Life Sciences, Science & research, Physics, Research, Copper, Atomic properties

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Enhancement of conductivity by diameter control of polyimide-based electrospun carbon nanofibers

Article Abstract:

A study explains the effects of molecular weight, bias voltage, spinning rate and the diameter control on the morphology of the polyimide-based electrospun carbon nanofibers. The analysis reveals that the conductivity of the carbon nanofibers decreases with the increasing nanofiber diameter.

Electric properties, Electrical conductivity, Chemical synthesis, Gel permeation chromatography

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