%0 Journal Article %1 noauthororeditor %D 2009 %E Epstein, A. J. %J Materials Chemistry and Physics %K CNT, Conducting EMI FTIR, MWCNT, Microwave Polyaniline, Polymers, SWCNT, TGA, absorption, carbon conductivity, electrical graphene nanocomposite, nanotube, shielding, %P 919-926 %T Polyaniline–MWCNT nanocomposites for microwave absorption and EMI shielding %V 113 %X Highly conducting polyaniline (PANI)–multi-walled carbon nanotube (MWCNT) nanocomposites were prepared by in situ polymerization. The FTIR and XRD show systematic shifting of the characteristic bands and peaks of PANI, with the increase inMWCNT phase, suggesting significant interaction between the phases. The SEM and TEM pictures show thick and uniform coating of PANI over surface of individual MWCNT. Based on observed morphological features in SEM, the probable formation mechanism of these composites has been proposed. The electrical conductivity of PANI–MWCNT composite (19.7 S cm−1) was even better thanMWCNT (19.1 S cm−1) or PANI (2.0 S cm−1). This can be ascribed to the synergistic effect of two complementing phases (i.e. PANI and MWCNT). The absorption dominated total shielding effectiveness (SE) of −27.5 to −39.2 dB of these composites indicates the usefulness of these materials for microwave shielding in the Ku-band (12.4–18.0 GHz). These PANI coatedMWCNTs with large aspect ratio are also proposed as hybrid conductive fillers in various thermoplastic matrices, for making structurally strong microwave shields.

@article{noauthororeditor, abstract = {Highly conducting polyaniline (PANI)–multi-walled carbon nanotube (MWCNT) nanocomposites were prepared by in situ polymerization. The FTIR and XRD show systematic shifting of the characteristic bands and peaks of PANI, with the increase inMWCNT phase, suggesting significant interaction between the phases. The SEM and TEM pictures show thick and uniform coating of PANI over surface of individual MWCNT. Based on observed morphological features in SEM, the probable formation mechanism of these composites has been proposed. The electrical conductivity of PANI–MWCNT composite (19.7 S cm−1) was even better thanMWCNT (19.1 S cm−1) or PANI (2.0 S cm−1). This can be ascribed to the synergistic effect of two complementing phases (i.e. PANI and MWCNT). The absorption dominated total shielding effectiveness (SE) of −27.5 to −39.2 dB of these composites indicates the usefulness of these materials for microwave shielding in the Ku-band (12.4–18.0 GHz). These PANI coatedMWCNTs with large aspect ratio are also proposed as hybrid conductive fillers in various thermoplastic matrices, for making structurally strong microwave shields.}, added-at = {2012-09-24T09:31:44.000+0200}, biburl = {https://www.bibsonomy.org/bibtex/291b4d2033ffca0825bd08bea95e861c3/pksaini}, editor = {Epstein, A. J.}, interhash = {d5c5efdc6a37e921e8edfcb127e47972}, intrahash = {91b4d2033ffca0825bd08bea95e861c3}, journal = {Materials Chemistry and Physics}, keywords = {CNT, Conducting EMI FTIR, MWCNT, Microwave Polyaniline, Polymers, SWCNT, TGA, absorption, carbon conductivity, electrical graphene nanocomposite, nanotube, shielding,}, pages = {919-926}, timestamp = {2012-09-24T09:31:45.000+0200}, title = {Polyaniline–MWCNT nanocomposites for microwave absorption and EMI shielding}, volume = 113, year = 2009 }