These results indicated that SR-loaded chitosan film on a titanium surface promotes osteoblast proliferation and differentiation in a dose-dependent manner, which may represent a new approach in the treatment of a titanium implant.

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Zirconium hydrogen phosphate / sulfonated poly (arylyene ether) s composite membranes has been prepared and evaluated by the unit cell test for direct methanol fuel cell (DMFC) applications. The comparison between the performances of zirconium hydrogen phosphate/ sulfonated poly (arylyene ether) s composite membranes and Nafion 115 shows that the unit cell performance with composite membrane was superior to that of Nafion, which makes zirconium hydrogen phosphate/ sulfonated poly (arylyene ether) s composite membrane a potential candidate for direct methanol fuel cells.

Sodium dodecyl sulfate/Pt composites and sodium dodecyl sulfate/Pd composites have been synthesized and used to modify the surface of Nafion membrane. Modified Nafion membranes have been characterized by Fourier transform infrared spectroscopy (FTIR). The properties of the modified membranes, in terms of their conductivity and the performance of the membrane electrode assembly (MEA) in the direct methanol fuel cells (DMFCs), have been analyzed and compared with those of the bare Nafion. It is found that the DMFC performance of the membranes modified by two kinds of catalytic materials are better than that of the bare Nafion when operated with 2.0 M methanol. The good conductivity and high cell performance makes the modified Nafion interesting candidates for DMFCs applications.

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