Smectic ordered structure and water repellency of a poly(fluoroalkyl acrylate) with a carbamate linker

Yi Liu, Yuji Higaki, Masaru Mukai, Noboru Ohta, Taizo Kabe, Atsushi Takahara

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Thermal behavior, molecular aggregation structure, and water repellency for poly{2-[(perfluorooctylethyl)carbamate]ethyl}acrylate (PFAUr-C8) were studied by differential scanning calorimetry (DSC), polarized optical microscopy (POM), wide-angle X-ray diffraction (WAXD), grazing-incidence wide-angle X-ray diffraction (GI-WAXD), contact angle measurements, and X-ray photoelectron spectroscopy (XPS). The impact of the carbamate linker was verified by comparison with poly[2-(perfluorooctyl)ethyl]acrylate (PFA-C8). PFAUr-C8 exhibited two phase transitions at 357 K and 416 K, whereas PFA-C8 showed a single-phase transition at 347 K. Both PFAUr-C8 and PFA-C8 formed a bilayered hexatic smectic-B phase at room temperature. Although the lamellar structure for the fluoroalkyl (Rf) groups was immediately lost in PFA-C8 after disordering of the lateral translational order, PFAUr-C8 maintained a stacked lamellar structure without lateral translational order. PFAUr-C8 exhibited excellent water repellency at room temperature similar to PFA-C8. The outstanding thermal stability of the lamellar structure in PFAUr-C8 is attributed to the cohesive interaction of the carbamate linkage.

Original languageEnglish
Pages (from-to)189-198
Number of pages10
JournalPolymer Journal
Volume51
Issue number2
DOIs
Publication statusPublished - Feb 1 2019

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Materials Chemistry

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