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Title: Preparation of poly(o-toluidine)/polyacrylonitrile composite fibres using CrO3
Authors: Üçhöyük, Canan
Karakışla, Meral
Saçak, Mehmet
Keywords: Composite
Conducting fibre
CrO3 oxidant
Polyacrylonitrile
Poly(o-toluidine)
Issue Date: Jun-2012
Publisher: NISCAIR-CSIR, India
Abstract: Poly(o-toluidine) (POT) and polyacrylonitrile (PAN) fibres have been used to prepare conducting composite fibres by in situ chemical polymerization using CrO3 as oxidant. The POT content and surface resistivity of POT/PAN composite fibres have been systematically evaluated as a function of the polymerization temperature and time, types of oxidant and dopant, and concentrations of monomer, oxidant and dopant. At the polymerization carried out at 30 °C for 4 h by 0.125 M o-toluidine, 0.08 M CrO3 and 1.2 M HCl, the composite fibres having the highest POT content (about 2.3 %) and the lowest surface resistivity (about 0.12 Mohm/cm2) are obtained. Surface resistivity measurements together with FTIR, TGA and SEM techniques have been used for the characterization of composite fibres prepared. Furthermore, the mechanical properties of composite such as tensile strength and elongation-at-break are also measured. SEM images show that the surface of fibre is coated by POT with a flaky shape and there are accumulation of large and small POT particles at some regions.
Page(s): 120-126
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-1025 (Online); 0971-0426 (Print)
Source:IJFTR Vol.37(2) [June 2012]

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