MEASUREMENT OF SURFACE-TENSION FOR POLYSILANES

From contact angle measurements using water and methylene iodide, surface tensions for solid films of 35 poly(silylene) polymers were obtained using the geometric-mean method. The surface tensions of poly(silylene)s depend strongly on the nature of the substituent groups, and span a very wide range from 25.0 to 52.8 dyne cm-1. Particularly high values were found for poly(aralkylsilylene)s. Surface tensions for two polysilanes were also measured by the equation of state method, giving results in good agreement with those obtained by the geometric-mean method.