ABSTRACT
This paper describes the preparation of honeycomb-patterned films from hydrophobic fluorinated copolymers. Micro-porous polymer films from fluorinated copolymers with hexagonally arranged micro-pores were prepared by casting polymer solution under humid condition. The pore size of the honeycomb-patterned film was controlled by changing casting volume. The water contact angles on the honeycomb-patterned films were measured with changing their pore sizes. The water contact angle increased up to 145°, when the pore size decreased. These values fitted the theoretical calculations.
Acknowledgments
We thank Dr. Hirotsugu Yamamoto and Dr. Yuriko Kaida for kindly providing us the fluorinated copolymers. This research is partly supported by the grant-in-aid for scientific research, MEXT, Japan.