Foams of polycaprolactone/MWNT nanocomposites for efficient EMI reduction
- 11 January 2008
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 18 (7), 792-796
- https://doi.org/10.1039/b709864b
Abstract
Nanocomposites of polycaprolactone (PCL) filled with multi-walled carbon nanotubes (MWNTs) were foamed by supercritical CO2 in order to prepare materials with reduced electromagnetic interference (EMI). Two mixing techniques were used, i.e., melt blending and co-precipitation. Shielding efficiency as high as 60 to 80 dB together with a low reflectivity was observed at a very low vol% of MWNTs (0.25 vol%). The reflectivity of the nanocomposites was advantageously decreased upon foaming. The uniformity of the open-cell structure was assessed by scanning electron microscopy. These foamed PCL/MWNT nanocomposites are very promising EMI shielding materials because their performances result from absorption at low filler content and not from reflection at relatively high filler content as was previously the case.Keywords
This publication has 16 references indexed in Scilit:
- Multiwalled Carbon Nanotube/Poly(ε-caprolactone) Nanocomposites with Exceptional Electromagnetic Interference Shielding PropertiesThe Journal of Physical Chemistry C, 2007
- Selective metal pattern formation and its EMI shielding efficiencyApplied Surface Science, 2006
- PAN–PAni nanocomposites obtained in thermocentrifugal fieldsThin Solid Films, 2005
- A Comparative Study of EMI Shielding Properties of Carbon Nanofiber and Multi-Walled Carbon Nanotube Filled Polymer CompositesJournal of Nanoscience and Nanotechnology, 2005
- Electromagnetic shielding efficiency of plasma treated and electroless metal plated polypropylene nonwoven fabricsJournal of Materials Science, 2004
- Effects of conductive fibers and processing conditions on the electromagnetic shielding effectiveness of injection molded compositesPolymer Composites, 2002
- Electromagnetic Interference Shielding Effectiveness of Hybrid Conductive Polymer CompositeJournal of Elastomers & Plastics, 2002
- Electromagnetic interference shielding effectiveness of conductive carbon black and carbon fiber‐filled composites based on rubber and rubber blendsAdvances in Polymer Technology, 2001
- Electromagnetic interference shielding effectiveness of carbon black and carbon fibre filled EVA and NR based compositesComposites Part A: Applied Science and Manufacturing, 2000
- Processing conditions for electromagnetic interference shielding effectiveness and mechanical properties of acrylonitrile‐butadiene‐styrene based compositesPolymer Composites, 1997