Conductive composites from polyvinyl alcohol and polypyrrole

Lindsey, S. E.; Street, G. B.

doi:10.1016/0379-6779(84)90080-8

Cited by 215 publications

(44 citation statements)

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“…In the present report, we describe related investigations concerning the synthesis of composite polymer fibers comprised of either poly(3-MT) or polypyrrole [3,4,5,6] and nonconductive Kevlar or polyester strings. In contrast to the single-phase poly fibers, which are extremely brittle and mechanical weak, the composite fibers exhibit excellent mechanical properties, while maintaining the electrical conductivity and electrochemical properties associated with thin films of poly(3-MT) or polypyrrole.…”

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confidence: 99%

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Synthesis of Conducting Polymer Composite Fibers in Electrochemical Flow Cells

White

1993

J. Electrochem. Soc.

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A one‐step electrochemical synthesis of polymer and composite polymer fibers of macroscopic dimensions (>10 cm length and 0.2 mm diam) is reported. Poly(3‐methylthiophene) and polypyrrole fibers are grown from the tip of a Pt microelectrode by oxidation of 3‐methylthiophene and pyrrole, respectively, in a capillary flow cell. Hydrodynamic fields within the capillary cell result in unidirectional growth of the polymer along the axis of the flow cell. High strength, conductive, and flexible composite polymer fibers are synthesized by deposition of poly(3‐methylthiophene) or polypyrrole on a nonconductive Kevlar or polyester string suspended in the solution along the axis of the capillary flow cell. Composite fiber growth rates as large as 30 cm/h are obtained under optimal conditions.

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confidence: 99%

“…2. As with the growth of poly(3-MT) fibers [5], the deposition of polypyrrole occurs at the end of the growing fiber, resulting in a fiber of uniform diameter.…”

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confidence: 99%

Synthesis of Conducting Polymer Composite Fibers in Electrochemical Flow Cells

White

1993

J. Electrochem. Soc.

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“…This has initiated another area of research, the production of composite materials. The electrochemical polymerisation of pyrrole on a platinum electrode covered with a film of poly(vinyl alcohol) has produced flexible films which combine the advantageous mechanical properties o f the host polym er with the electrical properties of the PPy (Lindsey and Street, 1984). Using the same technique, composites of PPy and poly(vinyl chloride) have also been prepared (De Paoli, et al 1985).…”

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Conducting Polymers and Polymer Electrolytes

Rubinson¹,

Mark²

2002

ACS Symposium Series

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UMI Number: U547216All rights reserved INFORMATION TO ALL U SE R S The quality of this reproduction is d ep endent upon the quality of the copy submitted.In the unlikely event that the author did not sen d a com plete manuscript and there are m issing p a g es, th e se will be noted. Also, if material had to be removed, a note will indicate the deletion. Disscrrlation PublishingUMI CONDUCTING POLYMERS AND POLYMER ELECTROLYTESby Walkiria Santos Schlindwein Abstract Polymers are mostly used as insulator materials. Since the late sixties, two new classes of polymeric materials possessing either ionic or electronic conductivities have been extensively studied. The work carried out in this thesis concerns of the study of polymer electrolytes based on poly (ethylene oxide) (PEO) complexed with divalent salts (ionic conductors) and polypyrroles (PPy) electrochem icdly and chemically prepared (electronic conductors). DiÉerent techniques were used to study their properties including Differential Scanning Calorimetry 03SC), Variable Temperature Polarising M icroscopy (VTPM), Extended X-ray Absorption Fine Structure (EXAFS), a.c. Impedance, Cyclic Voltammetry, and Fourier Transform Infra-Red Spectroscopy (FTIR).W ater-cast film s o f P E 0n:Z nX 2 (X = Cl, Br, I) were prepared at a range of stoichiometries. The effects of either residual presence of water or thermal treatment related to the formation of high melting crystalline materials were investigated. The morphology of the zinc halides films differs from similar films cast from acetonitrile/methanol mixtures. The presence of high melting crystalline material in the water cast samples is influenced mostly by the concentration, type of anion and drying procedure applied to the samples. The high melting crystalline materials in the zinc samples are more affected by the drying regime. In some cases, solvent effects can be removed by using a high temperature (e.g. 180°C) drying regime. The presence of water normally depresses the melting temperature of the crystalline structures.Films of PE0 n:CaBr2 and PE0 n:NiBr2 cast from water were also examined. The high melting crystalline materials in the calcium samples are more affected by the presence of water. The nickel samples are highly crystalline and the presence of high melting material does not seem to be influenced by either the presence of solvent or the drying procedure.EXAFS was used as a suitable technique to probe the local structure surrounding the cation. The results of the zinc halide samples gave some indication o f the interionic and polym er-cation interactions. It was demonstrated that the halogen provides the most substantial contribution for the total EXAFS spectrum and the oxygen contribution is much less significant, except in the case of PEOn:ZnCl2 samples. This could be due to the size of the nearest neighbour atoms and/or to the interaction polymer-cation. The presence of neutral "ion pairing" is suggested for the PEOn:ZnBr2 samples. The EXAFS results for the samples containing NiBr2 indicated a stro...

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“…Its insolubility in many commonly used solvents limits its processability with solution process or melting process methods [4,5]. Improvement in the processability of polyaniline can be achieved by preparing copolymer, composite or blends with other polymers or inorganic materials [6][7][8][9].…”

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confidence: 99%

Synthesis and Characterization of Polyaniline/Ignimbrite Nano-Composite Material

Ertekin¹,

Cimen²

2016

J Material Sci Eng

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In this study, Polyaniline-ignimbrite (PAN-IB) which is a novel nanocomposite material consisting of electrically conductive Polyaniline (PAn) polymer and Ignimbrite (IB) natural insulating material was synthesized chemically using KIO 3 as a radical initiator in aqueous media with conventional radical polymerization method. The synthesized nanocomposites including ignimbrite with various monomer-ignimbrite percentages were monitored with scanning electron microscopy (SEM) and structural characterizations were examined with FTIR spectroscopy. Thermogravimetric analysis (TGA), particle size analysis with dynamic light scattering, magnetic susceptibility and conductivity measurements were also examined for all synthesized composites. With making a composite with aniline, the conductivity of ignimbrite (3 × 10 -7 Scm -1 ) reached to 2.7 × 10 -5 Scm -1 . However increasing the ratio of monomer which is added to ignimbrite did not make a significant change on conductivity of the resulting composite.

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Conductive composites from polyvinyl alcohol and polypyrrole

Cited by 215 publications

References 5 publications

Synthesis of Conducting Polymer Composite Fibers in Electrochemical Flow Cells

Synthesis of Conducting Polymer Composite Fibers in Electrochemical Flow Cells

Conducting Polymers and Polymer Electrolytes

Synthesis and Characterization of Polyaniline/Ignimbrite Nano-Composite Material

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