Conductive composites based on PVDF-C2F3H and subtituted or pure poly(pyrroles)

Boiteux, Gisèle; Ho-Hoang, Anh; Fache, Fabienne; Lemaire, Marc; Glowaski, I.; Ulański, Jacek

doi:10.1016/0379-6779(94)02538-a

Cited by 11 publications

(6 citation statements)

References 6 publications

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“…(5) that conductivity increasing with increasing of temperature in the range (23-80)ºC, this is due to the release of extra charge carrier with increasing temperature Fig. (6) shows also the relation between (Log σ) and the reciprocal of temperature (1/T), were a linear relationship was obtained were at high temperature thermal movment of polymer chain segments would be improved, which increased the ionic conductivity, such behavior was also observed in amorphous materials due to the defect (31) , while figure (7) shows the relation between(LogJ) and E giving another indicate of ionic conduction through low to high field region were the most of migration of ions are localized barrier height were theses barriers comes from the amorphous structure of polymer chains.…”

Section: -Results and Discussionmentioning

confidence: 90%

“…however, difficulties encountered in processing these materials in the form of solution or melts have hindered. their development in many applications of all the difficult modification techniques available, one of the most medley studied and applied is the formation of blends of different origins, conducting polymers blends are in facts some suitable compositions of a conducting polymer with one or more insulating polymers, so that their desirable properties are combined successfully (5)(6)(7)(8)(9) .…”

Section: -Introductionmentioning

confidence: 99%

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Conduction Mechanism in Polyaniline -Polyacrylic Acid Blend

A.Saleh¹,

Abdullah²,

Hamdi³

et al. 2009

J.Edu.Sci.

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‫الخالصة‬ ‫و‬ ‫بائي‬ ‫الكير‬ ‫التوصيل‬ ‫اسة‬ ‫در‬ ‫تم‬ ‫البحث‬ ‫ىذا‬ ‫في‬ ‫اليات‬ ‫رقيقة‬ ‫ألغشية‬ ‫التنشيط‬ ‫وطاقات‬ ‫التوصيل‬ (PANI-PAA) ‫معدن‬ ‫تركيب‬ ‫وبشكل‬ / ‫بوليمر‬ / ‫معدن‬ ، ‫التوصيل‬ ‫ميكانيكية‬ ‫أن‬ ‫اسة‬ ‫الدر‬ ‫نتائج‬ ‫بينت‬ ‫التيار‬ ‫نوع‬ ‫من‬ ‫كانت‬ ‫بائي‬ ‫الكير‬ ‫االيوني‬ . ً ‫أييا‬ ‫وتم‬ ‫الم‬ ‫لألغشية‬ ‫بائية‬ ‫الكير‬ ‫اص‬ ‫الخو‬ ‫اسة‬ ‫در‬ ‫من‬ ‫ة‬ ‫حير‬ ‫اوحت‬ ‫تر‬ ‫ة‬ ‫ار‬ ‫الحر‬ ‫درجات‬ ‫من‬ ‫مدى‬ ‫تأثير‬ ‫اسة‬ ‫در‬ ‫خالل‬ ‫بين‬ Cº ( 23 -70 ) . ‫التيار‬ ‫ة‬ ‫مميز‬ ‫رسم‬ ‫خالل‬ ‫من‬ ‫تم‬ -‫مساوية‬ ‫انيا‬ ‫ووجد‬ ‫بائية‬ ‫الكير‬ ‫التوصيمية‬ ‫حساب‬ ‫الفولتية‬ ‫إلى‬ ( (5.7x10 -11 (Ω.cm) -1 ‫المستحصمو‬ ‫لتنشيط‬ ‫طاقو‬ ‫وقيمو‬ ، 1.3 eV) ) ‫ال‬ ‫أثبتت‬ ‫و‬ ‫د‬ ‫أن‬ ‫اسة‬ ‫ر‬ ‫تفاع‬ ‫ار‬ ‫ال‬ ‫يؤدي‬ ‫ة‬ ‫ار‬ ‫الحر‬ ‫درجة‬ ‫درجات‬ ‫مدى‬ ‫يمن‬ ‫ة‬ ‫المحير‬ ‫لألغشية‬ ‫بائية‬ ‫الكير‬ ‫التوصيمية‬ ‫مقدار‬ ‫في‬ ‫يادة‬ ‫ز‬ ‫ى‬ ‫أعاله‬ ‫ة‬ ‫ار‬ ‫الحر‬ . Abstract:The electrical properties of polyaniline-polyacrilic acid blend are reported using Al/Polymer/Al structured. The D.C. conductivity is measured in the temperature range (23-70) C˚ via two probe method. The current was measured at steady state conditions. The domains conduction mechanism was identified as Ionic conduction. The D.C conductivity and the activation energy were estimated to be 5.7x10 -11 (Ω.cm) -1 while activation energy is (1.3 eV), and dark DC bulk conductivity of blend was observed to increase orders of magnitude in the investigated temperature range.

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Section: -Results and Discussionmentioning

confidence: 90%

Section: -Introductionmentioning

confidence: 99%

Conduction Mechanism in Polyaniline -Polyacrylic Acid Blend

A.Saleh¹,

Abdullah²,

Hamdi³

et al. 2009

J.Edu.Sci.

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“…15 by electrochemical polymerisation of pyrrole within a swollen inert polymer film, using NBu,BF4 as electrolyte. 15 by electrochemical polymerisation of pyrrole within a swollen inert polymer film, using NBu,BF4 as electrolyte.…”

Section: Methodsmentioning

confidence: 99%

Electrical properties of heterojunctions of PVDF-C2F3H/polypyrrole composites with p- or n‐doped silicon

Jeszka

Sroczyńska

Boiteux

et al. 1996

Adv. Mater. Opt. Electron.

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The temperature dependence of the electrical properties of heterojunctions formed by polypyrrole composites with PVDF copolymer and silicon were studied. We show that using such composites it is possible to prepare junctions with good rectifying properties, comparable with those obtained using polypyrrole or poly(N‐methylpyrrole). The observed forward‐bias current‐voltage characteristics can be satisfactorily fitted using a modified Schottky equation. The temperature dependence of the I‐V characteristics shows that the transport mechanism, especially in the case of p‐Si junctions, is more complicated and probably tunnelling between localised levels plays an important role.

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“…Improvements are expected from composites in which conducting polymers can be dispersed in the insulating polymer matrix which provides a flexible, large area substrate for electronic properties. Composites of conducting PPy prepared by electrochemical and chemical methods with other insulating polymers like polydimethyl siloxane [24], polyindene [25], polyimide [26], polypropylene [27], polyvinylchloride [28], polyoxyphenylene [29], polymethylmethacrylate [30], polyvinylidene fluoride (PVDF) [31,32] are reported in the literature. These composite materials are characterized for their electrical, thermal, chemical and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Electrical Characterization of Self-Supported Conducting Polypyrrole-Poly(vinylidene fluoride) Composite Films

Taunk¹,

Kapil²,

Chand³

2009

TOMACROJ

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We report the synthesis of polypyrrole composite films by chemical oxidation polymerization of pyrrole diffused inside poly(vinylidene fluoride) matrix and temperature dependant dc conductivity study of these composite films. Ammonium persulfate is used as an oxidizing agent and HCl as the dopant in aqueous medium. This technique produces highly conductive, flexible and free standing polymer composite films in semi-interpenetrating architecture. It is observed that conductivity of the composite films can be controlled by varying the dopant concentration. The variation of conductivity with temperature indicates the semiconducting nature of these composite films. The temperature dependence of conductivity is explained in the light of two different models from which activation energy (E a ) and other hopping parameters are determined. Experimental data fits well with variable range hopping model and three dimensional charge transport mechanism is shown to occur in these films.

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Conductive composites based on PVDF-C2F3H and subtituted or pure poly(pyrroles)

Cited by 11 publications

References 6 publications

Conduction Mechanism in Polyaniline -Polyacrylic Acid Blend

Conduction Mechanism in Polyaniline -Polyacrylic Acid Blend

Electrical properties of heterojunctions of PVDF-C2F3H/polypyrrole composites with p- or n‐doped silicon

Synthesis and Electrical Characterization of Self-Supported Conducting Polypyrrole-Poly(vinylidene fluoride) Composite Films

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