Title of article :
Electrical behavior of polymer grafted nanotubes/polymer nanocomposites using N-doped carbon nanotubes
Author/Authors :
B. Fragneaud، نويسنده , , Benjamin and Masenelli-Varlot، نويسنده , , Karine and Gonzلlez-Montiel، نويسنده , , Alfonso and Terrones، نويسنده , , Mauricio and Cavaillé، نويسنده , , Jean-Yves، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2007
Pages :
8
From page :
1
To page :
8
Abstract :
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.
Journal title :
Chemical Physics Letters
Serial Year :
2007
Journal title :
Chemical Physics Letters
Record number :
1922412
Link To Document :
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