Highly conducting carbon nanotube/polyethyleneimine composite fibers

Edgar Muñoz, Dong Seok Suh, Steve Collins, Miles Selvidge, Alan B. Dalton, Bog G. Kim, Joselito M. Razal, Geoffrey Ussery, Andrew G. Rinzler, M. Teresa Martínez, Ray H. Baughman

Research output: Contribution to journalArticlepeer-review

126 Scopus citations


The spinning of single-walled carbon nanotube (SWNT)/polyethyleneimine (PEI) composite fibers using a PEI solution as a coagulant and different SWNT materials and surfactants in the spinning solution was discussed. It was found that the strong interfacial bonding between PEI and the nanotubes provided interfiber stress transfer. The fibers exhibited moderate tensile strengths and toughness and over a hundred of times the electronic conductivity previously reported SWNT/polymer composite fibers. Analysis suggests that the fiber strength and modulus can likely be significanly increased by crosslinking the PEI.

Original languageEnglish
Pages (from-to)1064-1067
Number of pages4
JournalAdvanced Materials
Issue number8
StatePublished - 18 Apr 2005


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