Please use this identifier to cite or link to this item:
|Title:||Preparation and characterization of semi-conductive poly(vinylidene fluoride)/polyaniline blends and membranes||Authors:||Wang, P.
|Issue Date:||5-Jun-2002||Citation:||Wang, P., Tan, K.L., Kang, E.T., Neoh, K.G. (2002-06-05). Preparation and characterization of semi-conductive poly(vinylidene fluoride)/polyaniline blends and membranes. Applied Surface Science 193 (1-4) : 36-45. ScholarBank@NUS Repository. https://doi.org/10.1016/S0169-4332(01)01031-5||Abstract:||Semi-conductive membranes from poly(vinylidene fluoride)/polyaniline (PVDF/PANi) blends in N-methyl-2-pyrrolidone (NMP) solution were prepared by phase inversion in an aqueous solution of poly(styrenesulfonic acid) (PSSA). Entrapment of a "stoichiometric" amount of PSSA dopant molecules (with respect to the PANi content) into the membrane occurred during the phase inversion process and gave rise to a semi-conductivity membrane. The PSSA-doped (protonated) PVDF/PANi blend membranes were studied by FT-IR spectroscopy, UV-visible absorption spectroscopy, X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). It was found that the PANi and PSSA chains dispersed uniformly in the doped PVDF/PANi blend membranes. The morphology of the membranes was studied by scanning electron microscope (SEM). The membrane was found to have an asymmetry structure with a dense skin layer and a porous inner layer. The membrane exhibited excellent stability in doping/protonation level (and thus conductivity), even after prolonged exposures to an aqueous medium, as revealed by XPS and surface resistance measurements. © 2002 Elsevier Science B.V. All rights reserved.||Source Title:||Applied Surface Science||URI:||http://scholarbank.nus.edu.sg/handle/10635/66767||ISSN:||01694332||DOI:||10.1016/S0169-4332(01)01031-5|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Aug 14, 2019
WEB OF SCIENCETM
checked on Jul 2, 2019
checked on Aug 18, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.