Polypyrroles prepared by chemical oxidative polymerization at different oxidation potentials

Whang, Y.E.; Han, Jun Hee; Motobe, Takeharu; Watanabe, Takeshi; Miyata, Seizo

doi:10.1016/0379-6779(91)91799-g

Cited by 21 publications

(9 citation statements)

References 9 publications

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“…[7][8][9] Polypyrrole is a conductive polymer that has the benefits of easy polymerization, high conductivity and excellent atmospheric and thermal stability compared to other conductive polymers. [10][11][12][13] With its excellent adhesion force to various fabric substrates, such as polyester, cotton and nylon, polypyrrole has also been actively used for developing smart fabrics. [14][15][16] The use of in-situ polymerization, in which conductive polymers are diffused into fibers, can form dual-scale roughness for conductivity and superhydrophobicity through a simple process because the nanostructured particles formed by the polymerization of pyrrole monomers into polymer are attached to the fabric surface with micro-scale roughness.…”

mentioning

confidence: 99%

Conductivity, superhydrophobicity and mechanical properties of cotton fabric treated with polypyrrole by in-situ polymerization using the binary oxidants ammonium Peroxodisulfate and ferric chloride

Lee

Park

2018

Textile Research Journal

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In this study, polypyrrole deposition and a superhydrophobic coating were applied to cotton fabrics to develop a self-cleaning and conductive fabric with electric heating performance. The binary oxidants ammonium peroxodisulfate and ferric chloride were introduced during the polymerization to adjust the size of the polypyrrole particles for creating diverse nano-scale roughness on the surface of the cotton fabrics and to prevent degradation in the mechanical properties of textiles. The in-situ polymerization of polypyrrole that introduced the binary oxidants succeeded in depositing polypyrrole particles on the surface of the cotton fabrics. Binary oxidants formed small polypyrrole particles contrary to the single oxidants. In terms of conductivity, the surface resistivity decreased as the FeCl3 ratio in the oxidants increased. The binary oxidants led to a similar level of conductivity even though the amount of polypyrrole deposition was less than that in the case of the single oxidant. The electrical heating performance improved as the surface resistance was decreased, resulting in an up to 20℃ increase in the surface temperature. On the other hand, the duration of the electro-heating effect was shorter with higher surface temperature. In terms of wettability, a superhydrophobicity with a contact angle of 150° or higher and a shedding angle of less than 10° was achieved under all oxidant conditions because of the nano-scale roughness caused by polypyrrole. Polypyrrole deposition reduced the tensile strength of the cotton fabric and increased its stiffness. The binary oxidants exhibited smaller changes in the mechanical properties of the textile than the single oxidants.

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confidence: 99%

Conductivity, superhydrophobicity and mechanical properties of cotton fabric treated with polypyrrole by in-situ polymerization using the binary oxidants ammonium Peroxodisulfate and ferric chloride

Lee

Park

2018

Textile Research Journal

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“…7). The total absorbance in parts c and d was approximately 40% lower due to the smaller amount of cylindrical material as compared to a lamellar layer, which also contributes to the relative high amount of noise in part c. to yield the best quality products [12], and by using solvent mixtures of methanol and acetonitrile or adding FeCl 2 even more suitable oxidation potentials could be realized [10,12]. However, these studies were performed on systems where FeCl 3 was used as an oxidizing agent, and solvents may have a different influence on the oxidation potential of CuCl 2 solutions.…”

Section: Templated Pyrrole Polymerizationmentioning

confidence: 99%

“…The electrochemical method has remained far more popular due to the superior properties of the obtained material as compared to chemically prepared polypyrrole, which is usually obtained as a powdery precipitate. Its properties very much depend on the reaction conditions, such as the nature and concentration of the oxidant, reactant stoichiometry, reaction medium, temperature, and reaction time [9][10][11][12]. Nevertheless, an advantage of the chemical method is that it can be used to polymerize polypyrrole onto a polymeric template, for example to obtain material with better mechanical properties or to obtain nanostructured polypyrrole [13,14].…”

Section: Introductionmentioning

confidence: 99%

Nanostructured polystyrene-block-poly(4-vinyl pyridine)(pentadecylphenol) thin films as templates for polypyrrole synthesis

Zoelen

Bondzic

Landaluce

et al. 2009

Polymer

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Polypyrrole has been chemically synthesized on thin film nanostructures obtained from comb-shaped supramolecules of polystyrene-block-poly(4-vinyl pyridine) (PS-b-P4VP) hydrogen bonded with pentadecylphenol (PDP). PDP was washed from thin films of cylindrical and lamellar self-assembled combcopolymer systems, which resulted in removal of the upper layers of microdomains, leaving single cylindrical and lamellar layers covering a substrate, with P4VP segregated at the bottom as well as at the free air interface. This P4VP was complexed with Cu 2þ ions, after which chemical oxidation polymerization of pyrrole resulted in a thin polypyrrole layer covering the nanostructured block copolymer. The use of a catalytic amount of bipyrrole greatly improved the quality of the obtained product. The conductivity was measured to be w0.7 S cm À1 .

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“…In the literature, PPy is reported to have been polymerized either through electrochemical processes or by chemical oxidation [5][6][7] . Although the mechanism of the chemical polymerization of PPy is unclear, the possible steps is given below 8 where Py represents the repeating unit An earlier paper 9 by the first author of this work has investigated the effect of PPy deposition on the interfacial bonding of carbon fibre reinforced composites. However, in that paper, the deposition was performed through the electrochemical process.…”

Section: Introductionmentioning

confidence: 99%

Effect of Chemical Oxidation on the Interfacial Bonding between Carbon Fibre and Epoxy Resin

Lin¹,

Huang

Chiu

2001

Polymers and Polymer Composites

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Polypyrrole (PPy) was deposited on carbon fibres via the oxidation-polymerization of pyrrole (Py) with ferric ions. These PPy-deposited carbon fibres were then made into composite boards with epoxy resin. The interfacial bonding between carbon fibre and epoxy resin was evaluated by measuring the interlaminar shear strength (ILSS), tensile strength before and after impact (TAI), and flexural strength. Experimental results show that deposition of PPy can improve the ILSS, tensile strength, and flexural strength. Furthermore, TAI is also reduced by the deposition of PPy. The interfacial bonding was the highest when the carbon fibre was immersed in 20 wt% FeCl3(aq) and then reacted with 0.5 M Py in acetonitrile for 20 min.

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Polypyrroles prepared by chemical oxidative polymerization at different oxidation potentials

Cited by 21 publications

References 9 publications

Conductivity, superhydrophobicity and mechanical properties of cotton fabric treated with polypyrrole by in-situ polymerization using the binary oxidants ammonium Peroxodisulfate and ferric chloride

Conductivity, superhydrophobicity and mechanical properties of cotton fabric treated with polypyrrole by in-situ polymerization using the binary oxidants ammonium Peroxodisulfate and ferric chloride

Nanostructured polystyrene-block-poly(4-vinyl pyridine)(pentadecylphenol) thin films as templates for polypyrrole synthesis

Effect of Chemical Oxidation on the Interfacial Bonding between Carbon Fibre and Epoxy Resin

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