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 | |
| Publication status | Published - 2014 |
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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 journal › Article
}
TY - JOUR
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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U2 - 10.1039/c4ra01777c
DO - 10.1039/c4ra01777c
M3 - Article
AN - SCOPUS:84903589812
VL - 4
SP - 26932
EP - 26939
JO - RSC Advances
JF - RSC Advances
SN - 2046-2069
IS - 51
ER -