On the mechanism of mass transport of low molecular weight compounds in polyimides: Modelling and 2D-FTIR analysis (Contributo in atti di convegno)

Type
Label
  • On the mechanism of mass transport of low molecular weight compounds in polyimides: Modelling and 2D-FTIR analysis (Contributo in atti di convegno) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Alternative label
  • Mensitieri G., Lavorgna M., Scherillo G. Ragosta G. Musto P. Mensitieri, G.; Lavorgna, M.; Scherillo, G.; Ragosta, G.; Musto, P (2008)
    On the mechanism of mass transport of low molecular weight compounds in polyimides: Modelling and 2D-FTIR analysis
    in IVth International Conference on Times of Polymers (TOP) and Composites., Ischia( Naples), Italy
    (literal)
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  • Mensitieri G., Lavorgna M., Scherillo G. Ragosta G. Musto P. Mensitieri, G.; Lavorgna, M.; Scherillo, G.; Ragosta, G.; Musto, P (literal)
Rivista
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  • Abstract: Mass transport mechanism of low molecular weight compounds (water and carbon dioxide) into polyimide films has been analysed and modelled on the basis of the relevant findings of an in situ FTIR spectroscopic analysis. In particular, in the case of water, it has been assumed that concurrent diffusion occurs of single water molecules and water dimers, which display different mobilities. A non-linear instantaneous equilibrium between the local concentrations of these two species has been imposed, based on a two layers BET theory. The proposed approach Is able to give a good qualitative and quantitative Interpretation of both sorption equilibrium and of sorption/desorption kinetics data. © 2008 American Institute of Physics. AIP Conference Proceedings 1042, pag. da 32 a 34 (literal)
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  • Institute of Chemistry and Technology of Polymers (ICTP), National Research Council of Italy (CNR), Pozzuoli, Naples. Department of Materials and Production Engineering, University of Naples Federico II. Institute of Composite and Biomedical Materials, National Research Council of Italy (CNR), Naples. (literal)
Titolo
  • On the mechanism of mass transport of low molecular weight compounds in polyimides: Modelling and 2D-FTIR analysis (literal)
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