부산대학교 도서관

In the present work the liquid morphology, under partially saturated conditions inside two carbon aerogel and xerogel samples, was investigated using the low-field nuclear magnetic resonance (NMR) relaxometry. Information about the tortuosity of the two samples was also extracted using pulse field gradient NMR diffusometry. The molecules under investigation were water and cyclohexane. They were chosen due to their different interaction with the carbonaceous matrix. It was found a non-uniform coverage of molecules on the pore surface except for the case of cyclohexane filled carbon xerogel when the distribution was uniform. It was also observed an influence of the cyclohexane-surface interaction on the tortuosity factor characterizing the xerogel sample. [ABSTRACT FROM AUTHOR]