期刊
POLYMER
卷 99, 期 -, 页码 193-203出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2016.06.058
关键词
Multiwalled carbon nanotubes; Polystyrene; Polylactic acid; Bicontinuity; Double percolation; Electrical conductivity
资金
- Campania Region (MASTRI Excellence Network - Materiali, and strutture intelligenti - POR Campania)
Selective localization of multi-walled carbon nanotubes (MWCNT) in polylactic acid/polystyrene (PLA/PS) bicontinuous blends is presented in this work. A masterbatch of PS with a 2 wt% content of MWCNT is prepared and then melt mixed with different amounts of PLA. This two-step process results in a double percolated morphology where PS percolates the PLA phase, and MWCNTs percolate the PS phase. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) evidence, respectively, the bicontinuous morphology and the high selectivity of MWCNT localization in the system. Double percolation leads to a very low electrical percolation threshold of about 0.45 vol% MWCNT on total volume and an electrical conductivity of 10(-9) S/cm. (C) 2016 Elsevier Ltd. All rights reserved.
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