Page 254 - Polymer-based Nanocomposites for Energy and Environmental Applications
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226                Polymer-based Nanocomposites for Energy and Environmental Applications


                   2.5
                                  Diiodomethane
                                  method
                   2.0
                  Hydrogen adsorbed (wt%)  1.5  Paraformaldehyde






                   1.0
                                          method

                   0.5



                   0.0
                      0              1               2              3
                                         Pressure (MPa)
         Fig. 8.6 Hydrogen adsorption isotherms determined for PANI hypercross-linked with
         paraformaldehyde (circles) and hypercross-linked with diiodomethane (squares).


                   0.8

                              Deprotonated
                              polyaniline
                 Hydrogen adsorbed (wt%)  0.4
                   0.6









                   0.2                          Protonated
                                                polyaniline



                   0.0
                     0.00   0.02    0.04   0.06   0.08    0.10   0.12
                                         Pressure (MPa)

         Fig. 8.7 Hydrogen adsorption isotherms determined for PANI hypercross-linked with
         paraformaldehyde (circles) and hypercross-linked with diiodomethane (squares).
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