Polyaniline (PANI)-Ag nanocomposites were synthesized by in situ chemical polymerization approach using ammonium persulfate and silver nitrate as oxidant. Characterizations of nanocomposites were done by ultraviolet-visible (UV-vis), Fourier transform infrared (FTIR), X-ray diffraction (XRD), scanning electron microscopy, and transmission electron microscopy (TEM). UV-vis, XRD and FTIR analysis established the formation of PANI/Ag nanocomposites and face-centered-cubic phase of silver. PANInanofibers were of average diameter ∼ 30 nm and several micrometers in length. Morphological analysis showed that the spherical-shaped silver nanoparticles decorate the surface of PANI nanofibers. Silver nanoparticles of average diameter ∼ 5-10 nm were observed on the TEM images for the PANI-Ag nanocomposites. Such type of PANI-Ag nanocomposites can be used as bistable switches as well as memory devices. Copyright © 2013 Wiley Periodicals, Inc.

SANATAN CHATTOPADHYAY

Electronic Science

DIPANKAR CHATTOPADHYAY

Polymer Science and Technology

B BHOWMICK

D MONDAL

D MAITY

MOLLICK M M RAHAMAN

BAIN M KANTI

BERA N KUMAR

University of Calcutta (informally known as Calcutta University or CU) is a collegiate public state university located in Kolkata, West Bengal, India.&nbsp;Within India it is recognized as a &quot;Five-Star University&quot; and accredited &quot;A&quot; Grade by National Assessment and Accreditation Council.

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The University of Calcutta has secured the Fifth position among the Universities of India in the prestigious &quot;Indian University Ranking 2019&quot; list, released by the NIRF of the Ministry of Human Resource Development, Government of India.

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It was established on 24 January 1857, and was one of the first institutions in Asia to be established as a multidisciplinary and Western-style university. Its alumni and faculty include several heads of state, heads of government, social reformers, prominent artists, only academy award winner and Dirac medal winner in India, many Fellows of the Royal Society and five Nobel laureates as of 2019 which is highest in South Asia.

University Of Calcutta

Journal of Applied Polymer Science

Polyaniline nanofibers have been successfully synthesized using Lutrol F 127 (Poloxamer 407) and Gelatin gel template. In both the cases nanofibers offer adequate stability and suitability for different applications. A rapid polymerization technique was successfully employed to synthesize interconnected polyaniline (PANI) nanofibers using chemical oxidative polymerization inside a soft template. The thermoreversible hydrogels of Lutrol F 127 and gelatin were used as templates where the interstices present in the hydrogel were responsible for the formation of PANI nanofibers with a diameter in the range ca 70-75 nm and ca 50-55 nm respectively and several micrometers in length. The doped emeraldine salt of PANI was confirmed by Fourier transform infrared spectroscopy and ultraviolet-visible spectroscopy. The crystallinity of as-synthesized PANI nanofibers for both cases was verified by an X-ray diffraction study while thermogravimetric analysis was performed to compare the relative stability of the synthesized PANI nanofibers. The electrical conductivities of polymerized PANI are of the order of 10-3 S cm-1 and are compared with those of template fabricated PANI. The Lutrol F 127 gel guided PANI nanofibers showed a rectifying property while the gelatin gel guided PANI provided a simple ohmic nature. © 2013 Society of Chemical Industry.

Polymer International

Poloxamer and gelatin gel guided polyaniline nanofibers: Synthesis and characterization

Electrically conductive nanocomposites of HCl-doped polyaniline (PANI-HCl) nanocolloid particles with water-soluble and film-forming polymers such as polyvinyl alcohol) (PVA) and methylcellulose (MC) were prepared by the redispersion of preformed MC-coated submicrometric PANI-HCl particles in PVA and MC solutions under sonication. for 1 h and the casting of the films from the dispersions followed by drying. The submicrometric polyaniline (PANI) particles were prepared by the oxidative dispersion polymerization of aniline in an acidic (1.25M HCl) aqueous ethanol (30 : 70) medium with MC as a steric stabilizer. The particles contained 4.7 wt % MC and had a conductivity of 7.4 S/cm. They had an oblongshape of 203 nm (length) and 137 nm (breadth). Sonication broke the oblong-shaped particles to sizes of ∼10 nm in the PVA matrix and ∼60 nm in the MC matrix. The electrical conductivity of these films was measured, and the percolation threshold was determined. The composites had the characteristics of a low percolation threshold at a volume fraction of PANI of 2.5 × 10-2 in the PVA matrix and at a volume fraction of 3.7 × 10-2 in the MC matrix. © 2008 Wiley Periodicals, Inc.

Electrically conductive nanocomposites of polyaniline with poly(vinyl alcohol) and methylcellulose

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Ultrasound assisted miniemulsion synthesis of polyaniline/Ag nanocomposite and its application for ethanol vapor sensing

Single pot synthesis of polyaniline protected silver nanoparticles by interfacial polymerization and study its application on electrochemical oxidation of hydrazine

British Journal of Pharmacology

Involvement of protein kinase C and Src tyrosine kinase in acute tolerance to ethanol inhibition of spinal NMDA-induced pressor responses in rats

Polymers for Advanced Technologies

UV-curing synthesis of sulfonated polyaniline-silver nanocomposites by anin situreduction method

In situ fabrication of polyaniline-silver nanocomposites using soft template of sodium alginate

Journal	Data powered by TypesetJournal of Applied Polymer Science
Publisher	Data powered by TypesetWILEY-BLACKWELL
ISSN	0021-8995
Open Access	No