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Title: Structure – directing effect of renewable resource based amphiphilic dopants on the formation of conducting polyaniline-clay nanocomposite
Authors: Sudha, J D
Reena, V L
Keywords: Clay
Conducting
Dopant
Micelle
Nanocomposite
Polyaniline
Structure-directing agent
Issue Date: Aug-2007
Publisher: Wiley-VCH Verlag GmbH
Citation: Macromolecular Symposia 254(1):274-283;Aug 2007
Abstract: The structure-directing effect of two amphiphilic dopants on the nucleation and growth mechanism during the formation of micro/ nanostructured polyaniline (PANI) and polyaniline-clay nanocomposites (PANICNs) is described. PANIs and PANICNs were prepared by in-situ intercalative emulsion polymerization of aniline using the amphiphilic dopants, 3-pentadecyl phenyl phosphoric acid (3-PDPPA) and 3-pentadecyl phenol–4-sulphonic acid (3-PDPSA), derived from cashew nut shell liquid, a renewable resource. These molecules act as intercalating agents, dopants and also as structure-directing agents. X- ray diffraction (XRD) and scanning electron microscopic (SEM) studies revealed the formation of lamellar/fibrillar – network in PANI- PDPPA and cylinder/rod morphology in PANI-PDPSA. Experimental data reveal that fibrillar morphology arises from the heterogeneous nucleation followed by an indefinite growth mechanism. On the other hand rod-like structures are formed from the self-assembled rod-like micelle guided polymerization through homonucleation followed by an anisotropic growth mechanism. Electrical conductivity measurement revealed lower conductivities for PANICNs than that of PANIs.
URI: http://hdl.handle.net/123456789/70
Appears in Collections:2007

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