TY - JOUR
T1 - Electrical behavior of polymer grafted nanotubes/polymer nanocomposites using N-doped carbon nanotubes
AU - Fragneaud, Benjamin
AU - Masenelli-Varlot, Karine
AU - González-Montiel, Alfonso
AU - Terrones, Mauricio
AU - Cavaillé, Jean Yves
N1 - Funding Information:
We are grateful to the Programa Cooperativo de Posgrado (PCP) between IPICYT and INSA-Lyon for financial support. ‘BF thanks IPICYT, CID and GEMPPM for the PhD Scholarship’. We are grateful to H. Terrones, A.L. Elías, J.A. Rodríguez-Manzo, A. Zamudio, D. Ramírez and L. Noyola for providing nanotube samples. We also thank CONACYT-México for financial support grants: 56787 (Laboratory for Nanoscience and Nanotechnology Research – LINAN), 45762 (MT), 41464-Inter American Collaboration (MT), 2004-01-013/SALUD-CONACYT (MT), PUE-2004-CO2-9 Fondo Mixto, and the Laboratory for Nanoscience and Nanotechnology Research (LINAN) – through Grant No. 56787. The Centre Technique des Microstructures (Lyon-I University) is also thanked for the access to the (cryo) ultramicrotomes.
PY - 2007/8/17
Y1 - 2007/8/17
N2 - We describe the fabrication of nanocomposites and study their electrical properties using two different types of polymers: polystyrene (PS) and poly(butadiene-co-styrene) (PSBS), in conjunction with N-doped multi-walled carbon nanotubes (CNx MWNTs). The N-doped tubes were embedded in the polymer matrix in two ways: as produced and PS-grafted using an atomic transfer radical polymerization (ATRP). We found that the grafted tube composites displayed higher percolation thresholds when compared to ungrafted tubes: from 0.45 vol.% for ungrafted to 1 vol.% for PS-grafted tubes in PS matrices, and from 1 vol.% for ungrafted tubes to almost 2.5 vol.% for PS-grafted tubes in PSBS matrices. The results demonstrate that PS coated tubes result in more efficient dispersions but exhibit higher percolation thresholds, whereas pristine doped-tubes result in better electrical conducting nanocomposites.
AB - We describe the fabrication of nanocomposites and study their electrical properties using two different types of polymers: polystyrene (PS) and poly(butadiene-co-styrene) (PSBS), in conjunction with N-doped multi-walled carbon nanotubes (CNx MWNTs). The N-doped tubes were embedded in the polymer matrix in two ways: as produced and PS-grafted using an atomic transfer radical polymerization (ATRP). We found that the grafted tube composites displayed higher percolation thresholds when compared to ungrafted tubes: from 0.45 vol.% for ungrafted to 1 vol.% for PS-grafted tubes in PS matrices, and from 1 vol.% for ungrafted tubes to almost 2.5 vol.% for PS-grafted tubes in PSBS matrices. The results demonstrate that PS coated tubes result in more efficient dispersions but exhibit higher percolation thresholds, whereas pristine doped-tubes result in better electrical conducting nanocomposites.
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U2 - 10.1016/j.cplett.2007.06.107
DO - 10.1016/j.cplett.2007.06.107
M3 - Article
AN - SCOPUS:34547678305
SN - 0009-2614
VL - 444
SP - 1
EP - 8
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 1-3
ER -