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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/3134
Title: Optical studies of polyaniline nanostructures
Authors: Goel S.
Gupta A.
Singh K.P.
Mehrotra R.
Kandpal H.C.
Published in: Materials Science and Engineering A
Abstract: An investigative infrared spectroscopic study is undertaken of nano polyaniline (PANI) samples differing in size and morphology in order to explore the sensitivity of spectral behavior on these factors. IR spectroscopy is used for studying the changes in the interaction between polymeric molecules as parts of nanodimensional structures. A time dependent interfacial oxidative polymerization of aniline monomer is conducted in order to obtain the desired nano PANI samples in doped form. The morphological changes in samples so obtained are characterized using scanning electron microscopy (SEM). The SEM images of samples obtained using the time dependent interfacial polymerization show preferential formation of 1D nano/micro structures with dimensions varying with reaction time intervals, which is also confirmed by transmission electron microscopy (TEM). X-ray diffraction study is undertaken to assess the crystalline nature of the samples. The IR spectra and the X-ray diffraction pattern of samples reflect these morphological variations. A comparative study of bulk polyaniline sample obtained using standard procedures is also undertaken. Significant variations in the conductivity of different polyaniline samples are also observed. The 10 min sample shows significantly enhanced conductivity as compared to the 20 min and 24 h. PANI samples having well defined nanofibers. © 2006.
Citation: Materials Science and Engineering A (2007), 443(43832): 71-76
URI: https://doi.org/10.1016/j.msea.2006.08.035
http://repository.iitr.ac.in/handle/123456789/3134
Issue Date: 2007
Keywords: Conducting polymer
FTIR study of nanomaterials
Polyaniline nanostructures
Scanning electron microscopy
ISSN: 9215093
Author Scopus IDs: 57209185565
56183857300
7404763806
16031906700
7003383488
Author Affiliations: Goel, S., Dyal Singh College, Delhi University, Lodhi Road, New Delhi, 110003, India
Gupta, A., Dyal Singh College, Delhi University, Lodhi Road, New Delhi, 110003, India
Singh, K.P., Dyal Singh College, Delhi University, Lodhi Road, New Delhi, 110003, India
Mehrotra, R., Optical Radiation Standards, National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi, 110012, India
Kandpal, H.C., Optical Radiation Standards, National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi, 110012, India
Funding Details: Research has been carried out under a scheme sponsored by Council of Scientific and Industrial Research, New Delhi. (Scheme no. 80(0047)/03/EMR-II). The authors thank the Director, National Physical Laboratory and the Principal, Dyal Singh College for providing the facilities and for their constant encouragement.
Corresponding Author: Mehrotra, R.; Optical Radiation Standards, National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi, 110012, India; email: ranjana@mail.nplindia.ernet.in
Appears in Collections:Journal Publications [CY]

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