Preparation and properties of conducting polypyrrole-sulfonated polycarbonate composites

Lee, Wan-Jin; Kim, Yong-Ju; Jung, Mi-Ok; Kim, Do‐Heyoung; Cho, Dong Lyun; Kaang, Shinyoung

doi:10.1016/s0379-6779(01)00302-2

Cited by 28 publications

(10 citation statements)

References 21 publications

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“…This jump in DC conductivity can be attributed to the formation of an infinite agglomerate pathway, which allows electrons to travel a macroscopic distance through the polymer composite. This general behavior has been observed in a significant number of conducting polymer composite systems [2,[22][23][24][25][26]. All the concentrations in series B and C are higher than the threshold / c .…”

Section: Resultssupporting

confidence: 53%

Prediction of the DC electrical conductivity of carbon black filled polymer composites

et al. 2015

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Different DC electrical conductivity models have been proposed to predict the properties of composite materials. Among these, the Mamunya model gives a good agreement with experimental data for different carbon black nanocomposites below the threshold concentration. In this paper, we extend the study using the Scarisbrick model. However, the percolation phenomenon is not observed and a modified model which takes into account some parameters, such as the aspect ratio and surface area to volume ratio of fillers, is used to accurately justify the conductive network formation. The modified Scarisbrick model shows clearly the percolation phenomenon and gives satisfactory results for the series samples which present high percolation threshold.

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Section: Resultssupporting

confidence: 53%

Prediction of the DC electrical conductivity of carbon black filled polymer composites

et al. 2015

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“…The conductivity of an order of 10 À2 S/cm was obtained in a PPy/polymer composite containing 15 wt.-% of PPy as reported earlier. [11] In our case, resultant high conductivity with low PPy content might be ascribed to accumulating PPy on the surface of the composite films and to differences in sample preparation. To achieve the electroactive shape memory in tensile mode, the materials should have a high elongation in addition to suitable conductivity because the usual shape memory materials are actuated after fixation at high elongation of at least 50% or more.…”

Section: Resultsmentioning

confidence: 62%

Conducting Shape Memory Polyurethane‐Polypyrrole Composites for an Electroactive Actuator

Sahoo

Jung

Goo

et al. 2005

Macro Materials & Eng

101

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Summary: Electroactive shape memory composites were prepared using polyurethane block copolymer and conducting polypyrrole by chemical oxidative polymerization. The electrical conductivity, thermal and mechanical properties, and morphology of the composites were investigated, and a voltage‐triggered shape memory effect was demonstrated. The polyurethane synthesized had a transition temperature near 46 °C. The presence of polypyrrole increased the conductivity of the composites, and a high conductivity of the order of 10−2 S/cm was obtained at 6–20 wt.‐% polypyrrole. Such a conductivity of composites was enough to show electroactive shape recovery by heating above the transition temperature of 40–45 °C due to melting of the polycaprolactone soft segment domain. Thus a good shape recovery of 85–90% could be obtained in the shape recovery test with bending mode when an electric field of 40 V was applied.

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“…The peaks at 1450 cm -1 and 1105 cm -1 are corresponding to the C-N stretching vibration in the ring and the C-H in-plane vibration. 3 Besides, the peak around 2965 cm -1 and 2850 cm -1 , can be attributed to the stretching vibration mode of the methylene and methane 23 and the typical peaks of SO 3 H are absorption at 1250-1150 cm -1 (the stretch vibration for S=O) and 1060-1030 cm -1 (the symmetric stretching band), 24 confirms the presence of the surfactant of SDBS.…”

Section: Resultsmentioning

confidence: 79%

Polypyrrole nanocapsules via interfacial polymerization

Zhang

Liu

et al. 2010

Macromol. Res.

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The interfacial polymerization technique was developed for the preparation of the polypyrrole (PPy) nanocapsules in toluene/water microemulsion under static and stirring conditions. Transmission electron microscopy (TEM) demonstrated a hollow morphology. The morphology of the resulting PPy nanocapsules was also affected significantly by the feeding ratio of the monomer and water. The formation of micelles was considered to be the driving force for the formation and stability of the capsules, and the surfactant (sodium dodecyl benzene sulfonate (SDBS)) can also act as a doping reagent. The doping level was examined by UV-visible spectroscopy (UVvis) and electrical conductivity. The intact PPy capsules were obtained with the same microemulsion composition to determine if the stirring was employed. A comparison of the resulting PPy and polyaniline (PANi) capsules prepared using the interfacial polymerization method was also given.

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Preparation and properties of conducting polypyrrole-sulfonated polycarbonate composites

Cited by 28 publications

References 21 publications

Prediction of the DC electrical conductivity of carbon black filled polymer composites

Prediction of the DC electrical conductivity of carbon black filled polymer composites

Conducting Shape Memory Polyurethane‐Polypyrrole Composites for an Electroactive Actuator

Polypyrrole nanocapsules via interfacial polymerization

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