Surface molecular aggregation structure and surface physicochemical properties of poly(fluoroalkyl acrylate) thin films

K. Honda, H. Yamaguchi, M. Kobayashi, M. Morita, A. Takahara

研究成果: Contribution to journalArticle査読

15 被引用数 (Scopus)

抄録

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. Spin-coated PFA-Cy thin films were characterized by static and dynamic contact angle measurements, X-ray photoelectron spectroscopy (XPS), and grazing- incidence X-ray diffraction (GIXD). The receding contact angles showed small values for PFA-Cy with short side chain (y≤6) and increased above y≥8. GIXD revealed that fluoroalkyl side chain of PFA-Cy with y≥8 was crystallized and formed ordered structures at the surface region as well as bulk one. These results suggest that water repellent mechanism of PFA-Cy 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. The surface nanotextured PFA-C8 through imprinting of anodic aluminum oxide mold showed extremely high hydrophobicity as well as high oleophobicity.

本文言語英語
論文番号012035
ジャーナルJournal of Physics: Conference Series
100
1
DOI
出版ステータス出版済み - 3 1 2008

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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