Surface Properties of Self-Organized Honeycomb-Patterned Films

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.

Keywords:

• honeycomb-pattern
• polymer film
• self-organization
• super hydrophobic

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.