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Preparation and characterization of SU8–carbon nanotube composites
Author(s) -
Mionić Marijana,
Jiguet Sébastien,
Judelewicz Moshe,
Forró László,
Magrez Arnaud
Publication year - 2009
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200982274
Subject(s) - materials science , carbon nanotube , composite material , epoxy , composite number , percolation threshold , nanotube , polymer , carbon nanotube metal matrix composites , electrical resistivity and conductivity , engineering , electrical engineering
SU8–carbon nanotube composites have been produced to enhance the mechanical, electrical, and thermal properties of SU8 photoresists. Homogeneous composites materials have been obtained when multiwalled carbon nanotubes (MWCNTs) functionalized with COOH groups were used. Indeed, COOH groups can react with the epoxy ring of the SU8 molecule yielding an improved interaction between carbon nanotubes (CNTs) and the polymer matrix. Impedance spectroscopy was used to study the conducting percolation path in the composites, that is the quality of the nanotube dispersion in the epoxy matrix. It turns out that propylene glycol methyl ether acetate (PGMEA) as well as gamma‐butyrolacton (GBL) are very suitable solvent to prepare SU8‐MWCNTs composites of good homogeneity.