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Study on the structure and properties of cyanate ester/bentonite nanocomposites
Author(s) -
Feng Yu,
Fang Zhengping,
Mao Wei,
Gu Aijuan
Publication year - 2005
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.21470
Subject(s) - nanocomposite , thermogravimetric analysis , thermal stability , bentonite , materials science , scanning electron microscope , cyanate ester , transmission electron microscopy , toughness , chemical engineering , organoclay , polymer chemistry , composite material , nuclear chemistry , chemistry , nanotechnology , epoxy , engineering
Cyanate ester (CE)/bentonite (BT) nanocomposites were prepared by melt blending of CE with NH 4 + ‐BT. The nanostructure of CE/BT nanocomposites was studied by X‐ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). It was found that partially intercalated and partially exfoliated structures coexisted in CE/BT nanocomposites containing 2.5 wt % BT with respect to that of bulk CE. Below 2.5 wt % BT content, a totally exfoliated and disordered structure was formed in the nanocomposites. The exfoliated BT enhanced the toughness of CE/BT nanocomposites. The impact strength showed a maximum of 7.1kJ/m 2 at 1 wt % BT, compared to 3.8kJ/m 2 of pure CE. Furthermore, results of thermogravimetric analysis (TGA) suggest that CE/BT nanocomposites have higher thermal stability. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 96: 632–637, 2005