Premium
Microwave absorption of poly‐ N ‐vinylcarbazole–polyaniline composites
Author(s) -
Basavaraja C.,
Jo Eun Ae,
Kim Bong Seong,
Kim Dae Gun,
Huh Do Sung
Publication year - 2011
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.21780
Subject(s) - polyaniline , materials science , thermogravimetric analysis , aniline , composite material , composite number , thermal stability , microwave , fourier transform infrared spectroscopy , absorption (acoustics) , conductive polymer , nanocomposite , polymer , chemical engineering , polymerization , organic chemistry , chemistry , physics , quantum mechanics , engineering
Abstract Poly‐ N ‐vinylcarbazole–polyaniline (PANI) composites were synthesized using different loading concentration of aniline (0.025–0.1 M) for their microwave absorption characteristics. The obtained composites were studied by Fourier transform infrared spectroscopy, thermogravimetric analysis technique, and atomic force microscope for their chemical structure, thermal stability, and the surface modifications, respectively. The conductivity increased much with the increase of aniline concentration in the composites. The composite sheets exhibited a strong microwave absorption in the microwave range of 1–10 GHz and achieved a maximum absorption value of 33 dB. The position of absorbing peak shows a mixed trend moving from lower to higher and again to lower with an increasing the concentration of aniline in the poly‐ N ‐vinylcarbazole–PANI. The new polymer composite exhibited an appreciable electromagnetic interference shielding efficiency compared with the previously reported PANI composites. POLYM. ENG. SCI., 2011. © 2010 Society of Plastics Engineers