Surface structure and water repellent mechanism of fluoroalkyl acrylate polymer thin films

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

Research output: Contribution to conferencePaper

Abstract

Effect of side chain length on the molecular aggregation states and surface properties of poly(fluoroalkyl acrylate)s [PFA-Cy, where y is fluoromethylene number in Rf group] thin films were systematically investigated. Spincoated PFA-Cy 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-Cy with short side chain (y≤6) and increased above y≥8. It has been revealed that fluoroalkyl side chain of PFA-Cy 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
Pages3832-3833
Number of pages2
Publication statusPublished - Dec 1 2005
Event54th SPSJ Symposium on Macromolecules - Yamagata, Japan
Duration: Sep 20 2005Sep 22 2005

Other

Other54th SPSJ Symposium on Macromolecules
CountryJapan
CityYamagata
Period9/20/059/22/05

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Honda, K., Sasaki, S., Sakata, O., Kobayashi, M., Otsuka, H., & Takahara, A. (2005). Surface structure and water repellent mechanism of fluoroalkyl acrylate polymer thin films. 3832-3833. Paper presented at 54th SPSJ Symposium on Macromolecules, Yamagata, Japan.