A study on rheological behavior of MWCNTs/epoxy composites

作者：Park Soo Jin^*; Bae Kyong Min; Seo Min Kang

来源：Journal of Industrial and Engineering Chemistry, 2010, 16(3): 337-339.

DOI：10.1016/j.jiec.2010.01.051

• Multiwalled carbon nanotubes
• Epoxy resins
• Composites
• Rheological properties

Rheological behaviors of multiwalled carbon nanotubes (MWCNTs)/epoxy composites with various MWCNT contents were investigated by using a time sweep and frequency sweep experiment with oscillatory rheometry. The functional groups on the acid-treated MWCNTs were investigated by fourier transfer-infrared spectroscopy (FT-IR). The composites containing acid-treated MWCNTs exhibited faster gel time than pure epoxy resins. The storage (G') and loss (G '') moduli of the composites showed solid-like behavior owing to interaction between the MWCNTs and the epoxy resins. The 1.0 wt% MWCNT composites had the highest crosslinking activation energy (E(c)) due to good dispersion and strong interfacial bonding. These results imply that three-dimensional crosslinking might take place among the hydroxyl group in epoxy resins and the carbonyl or hydroxyl group in acid-treated MWCNTs.

• 出版日期2010-5-25