Water repellent mechanism of fluoroalkyl acrylate polymer thin films

Koji Honda, Sono Sasaki, Osami Sakata, Hideyuki Otsuka, Atsushi Takahara

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Effect of side chain length on the molecular aggregation states and surface properties of poly(fluoroalkyl acrylate)s [PFA-C y, where y is fluoromethylene number in R f group] thin films were systematically investigated. Spin-coated PFA-C y thin films were characterized by static and dynamic contact angle measurements, X-ray photoelectron spectroscopy (XPS), differential scanning calorimetry and wide-angle X-ray diffraction. The receding contact angles showed small values for PFA-C y with short side chain (y≤6) and increased above y≥8. It has been revealed that fluoroalkyl side chain of PFA-C y with y≥8 was crystallized and formed ordered structures. These results suggest that water repellent mechanism of PFA-C y can be attributed to the presence of highly ordered fluoroalkyl side chains at the outermost surfaces. The results of XPS in the dry and hydrated states and contact angle measurement in water support the mechanism of lowering contact angle for water by exposure of carbonyl group to the water interface through reorientation of short fluoroalkyl chains.

Original languageEnglish
Title of host publication54th SPSJ Annual Meeting 2005 - Polymer Preprints, Japan
Number of pages1
Publication statusPublished - 2005
Event54th SPSJ Annual Meeting 2005 - Yokohama, Japan
Duration: May 25 2005May 27 2005


Other54th SPSJ Annual Meeting 2005

All Science Journal Classification (ASJC) codes

  • Engineering(all)


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