Contact angle vs surface energy

[Arun81]

Dear all,

I am using a polymer thin film which shows a high contact angle, high surface energy when i took a XPS spectrum it shows a low F:C ratio which means the high contact angle might be contributed from the roughness. But still i couldnt correlate how could the surface energy be high which is calculated from contact angle data of water,diiodomethane and ethanol.

Anyone has any idea?

Thanks

Arun