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Cure behavior and thermal stability analysis of multiwalled carbon nanotube/epoxy resin nanocomposites
Author(s) -
Yang Kai,
Gu Mingyuan,
Jin Yanping
Publication year - 2008
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.28898
Subject(s) - thermogravimetric analysis , nanocomposite , materials science , epoxy , thermal stability , differential scanning calorimetry , carbon nanotube , curing (chemistry) , ethylenediamine , composite material , activation energy , tetrahydrofuran , amine gas treating , chemical engineering , polymer chemistry , chemistry , organic chemistry , solvent , physics , engineering , thermodynamics
As‐received multiwalled carbon nanotubes (MWCNTs) were first treated by a 3 : 1 (v/v) mixture of concentrated H 2 SO 4 /HNO 3 and further functionalized by ethylenediamine/dicyclohexylcarbodiimide/tetrahydrofuran solution. MWCNT/epoxy nanocomposites were prepared. Their cure behaviors were investigated by dynamic differential scanning calorimetry. Quantitative analysis of the activation energy as a function of the degree of curing was carried out by the Flynn‐Wall‐Ozawa method. The fitted multiple regression equations for values of the activation energy of different systems were obtained. MWCNTs have the retardation effect on the cure reaction of epoxy resin, while the functional groups on the surface of amine‐modified MWCNTs could accelerate the cure reactions. Thermal stability was studied by thermogravimetric analysis. The filling of amine‐modified MWCNTs is beneficial to lower the cure activation energy and improve thermal stability of the nanocomposite. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008