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

doi:10.1039/c4ra01777c

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^*

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Contribution to journal › Article › peer-review

15 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 language	English
Pages (from-to)	26932-26939
Number of pages	8
Journal	RSC Advances
Volume	4
Issue number	51
DOIs	https://doi.org/10.1039/c4ra01777c
Publication status	Published - 2014

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

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10.1039/c4ra01777c

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title = "Layered perovskite nanosheets bearing fluoroalkoxy groups: Their preparation and application in epoxy-based hybrids",

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",

author = "Yuta Asai and Yusuke Ariake and Hitomi Saito and Naokazu Idota and Kimihiro Matsukawa and Takashi Nishino and Yoshiyuki Sugahara",

year = "2014",

doi = "10.1039/c4ra01777c",

language = "English",

volume = "4",

pages = "26932--26939",

journal = "RSC Advances",

issn = "2046-2069",

publisher = "Royal Society of Chemistry",

number = "51",

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T1 - Layered perovskite nanosheets bearing fluoroalkoxy groups

T2 - Their preparation and application in epoxy-based hybrids

AU - Asai, Yuta

AU - Ariake, Yusuke

AU - Saito, Hitomi

AU - Idota, Naokazu

AU - Matsukawa, Kimihiro

AU - Nishino, Takashi

AU - Sugahara, Yoshiyuki

PY - 2014

Y1 - 2014

N2 - 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

AB - 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

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Layered perovskite nanosheets bearing fluoroalkoxy groups: Their preparation and application in epoxy-based hybrids

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