THERMAL-CONDUCTIVITY OF PRESSURE POLYMERIZED C-60

We have studied the kinetics of C-60 polymerization in the temperature interval 450-500 K at pressures below 1 GPa by measurements of the ti me dependence of the thermal conductivity. It has been found at 450 K that the polymerization process at 0.8 GPa is slower than the reverse transformation from ''polymeric'' to ''monomeric'' phase at 0.08 GPa. The thermal conductivity lambda of polymerized C-60 was measured in th e temperature range 100-430 K and found to increase with increasing te mperature, which reflects strong phonon scattering. Both the presence of non-bonded C-60 molecules and a high degree of structural disorder in the crystalline lattice of the polymeric phase might be responsible for the behaviour of lambda(T). The results for lambda(T) are qualita tively similar to those reported previously for C-60 polymerized at hi gher p, T but an order of magnitude smaller.