2019年2月25日
Smectic ordered structure and water repellency of a poly(fluoroalkyl acrylate) with a carbamate linker
POLYMER JOURNAL
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- 巻
- 51
- 号
- 2
- 開始ページ
- 189
- 終了ページ
- 198
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1038/s41428-018-0139-2
- 出版者・発行元
- NATURE PUBLISHING GROUP
Thermal behavior, molecular aggregation structure, and water repellency for poly{2-[(perfluorooctylethyl)carbamate]ethyl} acrylate (PFAUr-C-8) were studied by differential scanning calorimetry (DSC), polarized optical microscopy (POM), wideangle 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-C-8). PFAUr-C-8 exhibited two phase transitions at 357 K and 416 K, whereas PFA-C-8 showed a single-phase transition at 347 K. Both PFAUr-C-8 and PFA-C-8 formed a bilayered hexatic smectic-B phase at room temperature. Although the lamellar structure for the fluoroalkyl (R-f) groups was immediately lost in PFA-C-8 after disordering of the lateral translational order, PFAUr-C-8 maintained a stacked lamellar structure without lateral translational order. PFAUr-C-8 exhibited excellent water repellency at room temperature similar to PFA-C-8 . The outstanding thermal stability of the lamellar structure in PFAUr-C-8 is attributed to the cohesive interaction of the carbamate linkage.
- リンク情報
- ID情報
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- DOI : 10.1038/s41428-018-0139-2
- ISSN : 0032-3896
- eISSN : 1349-0540
- ORCIDのPut Code : 49783739
- Web of Science ID : WOS:000457747500009