Layered perovskite nanosheets bearing fluoroalkoxy groups

Their preparation and application in epoxy-based hybrids

Yuta Asai, Yusuke Ariake, Hitomi Saito, Naokazu Idota, Kimihiro Matsukawa, Takashi Nishino, Yoshiyuki Sugahara

    Research output: Contribution to journalArticle

    10 Citations (Scopus)

    Abstract

    Nanosheets bearing CF3(CF2)7C 2H4O groups on their surface were prepared from a CF 3(CF2)7C2H4O derivative of ion-exchangeable layered perovskite HLaNb2O7· xH2O (HLaNb) via exfoliation, and were further utilized to prepare epoxy-based hybrids. The CF3(CF2)7C 2H4O derivative of HLaNb (C10F-HLaNb) was prepared by reacting the n-decoxy derivative of HLaNb with 1H,1H,2H,2H-perfluorodecanol, CF3(CF2)7C2H4OH. TEM and AFM observations revealed that the C10F-HLaNb was exfoliated into individual nanosheets bearing surfaces covered with CF3(CF2) 7C2H4O groups after ultrasonication in acetonitrile. The nanosheet dispersion in acetonitrile was employed to prepare epoxy-based hybrids, and the FE-TEM image of the epoxy-based hybrid with 5 mass% of the nanosheets (C10F-HLaNb/epoxy-5) showed that the nanosheets were dispersed in the epoxy matrix. Thermogravimetry of C10F-HLaNb/epoxy-5 and neat epoxy resin indicated that the initial mass loss due to water decreased and the thermal decomposition retarded by introducing C10F-HLaNb nanosheets. Dynamic mechanical thermal analysis revealed that the glass transition temperature of C10F-HLaNb/epoxy-5 (161 °C) was higher than that of neat epoxy resin (110 °C). These results clearly exhibit that thermal properties were improved by incorporating nanosheets bearing hydrophobic CF3(CF2) 7C2H4O groups in the epoxy resin most likely due to a decrease in water content. A water uptake test demonstrated that the water uptake rate of C10F-HLaNb/epoxy-5 was lower than that of the neat epoxy. This journal is

    Original languageEnglish
    Pages (from-to)26932-26939
    Number of pages8
    JournalRSC Advances
    Volume4
    Issue number51
    DOIs
    Publication statusPublished - 2014

    Fingerprint

    Bearings (structural)
    Nanosheets
    Perovskite
    Epoxy Resins
    Epoxy resins
    Derivatives
    Acetonitrile
    Water
    Transmission electron microscopy
    perovskite
    Thermoanalysis
    Water content
    Thermogravimetric analysis
    Pyrolysis
    Thermodynamic properties
    Ions

    ASJC Scopus subject areas

    • Chemical Engineering(all)
    • Chemistry(all)

    Cite this

    Layered perovskite nanosheets bearing fluoroalkoxy groups : Their preparation and application in epoxy-based hybrids. / Asai, Yuta; Ariake, Yusuke; Saito, Hitomi; Idota, Naokazu; Matsukawa, Kimihiro; Nishino, Takashi; Sugahara, Yoshiyuki.

    In: RSC Advances, Vol. 4, No. 51, 2014, p. 26932-26939.

    Research output: Contribution to journalArticle

    Asai, Yuta ; Ariake, Yusuke ; Saito, Hitomi ; Idota, Naokazu ; Matsukawa, Kimihiro ; Nishino, Takashi ; Sugahara, Yoshiyuki. / Layered perovskite nanosheets bearing fluoroalkoxy groups : Their preparation and application in epoxy-based hybrids. In: RSC Advances. 2014 ; Vol. 4, No. 51. pp. 26932-26939.
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