The Electrophysiological Effect of Fibroblast to the Defibrillation in Aged or Diseased Heart

Tang, Wei; Chen, Po‐Yuan; Chen, Min H.; Luo, Ching Hsing

doi:10.4020/jhrs.27.op45_4

Cited by 20 publications

(23 citation statements)

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“…Generally, it is thought that the NTC effect is due to the redistribution of CB particles and CB-CB interaction. 21 When the temperature was in the melting range of PP, the restrained CB particles could be redistributed into a new amorphous area and connected to one another to set up new conductive paths, which resulted in a reduction of the resistivity of CP-2. Because of the redistribution of CB particles and CB-CB aggregation during the cooling process, an unrepeatable characteristic of resistivity for CP-2 appeared.…”

Section: Resultsmentioning

confidence: 99%

Nylon 6 induced morphological developments and electrical conductivity improvements of polypropylene/carbon black composites

Chen¹,

Yang²,

Guo³

2009

J of Applied Polymer Sci

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In this study, a polar conductive filler [carbon black (CB)], a nonpolar polymer [polypropylene (PP)], and a polar polymer [nylon 6 (PA6)] were chosen to fabricate electrically conductive polymer composites by melt blending and compression molding. The morphological developments of these composites were studied. Scanning electron microscopy results showed that in a CB-filled PP/ PA6 (CPA) composite, CB particles were selectively dispersed in PA6 phases and could make the dispersed particles exist as microfiber particles, which could greatly improve the electrical conductivity. The PA6 and CB contents both could affect the morphologies of these composites. The results of electrical resistivity measurements of these composites proved the formation of conductive networks. The resistivity-temperature behaviors of these composites were also studied. For CB-filled PP (CP) composites, there were apparent positive temperature coefficient (PTC) and negative temperature coefficient (NTC) effects and an unrepeatable resistivity-temperature characteristic. However, for CPA composites, there were no PTC or NTC effects from room temperature to 180 C, and the resistivity-temperature behavior showed a repeatable characteristic; this proved that CB particles were selectively dispersed in the PA6 phase from another point of view. All experimental results indicated that the addition of PA6 to a CP composite could lead to an expected morphological structure and improve the electrical conductivity of the CP composite.

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Section: Resultsmentioning

confidence: 99%

Nylon 6 induced morphological developments and electrical conductivity improvements of polypropylene/carbon black composites

Chen¹,

Yang²,

Guo³

2009

J of Applied Polymer Sci

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show abstract

“…Besides, the formation of some new conductive network from the rearrangement of GNPs simultaneously occurs at elevated temperatures. 21,22 At high temperature (>120 C), this phenomena is predominant and results in the NTC effect.…”

Section: Resultsmentioning

confidence: 99%

Temperature dependence of the conductivity behavior of graphite nanoplatelet‐filled epoxy resin composites

Zheng

Fan

Wei

et al. 2009

J of Applied Polymer Sci

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In this article, epoxy/graphite nanoplatelet (GNP) conductive composites with the low percolation threshold of $ 0.5 vol % were prepared. The effect of microstructure, particularly the spatial distribution of fillers in the matrix on the resistivity and its dependence on temperature, also was investigated. It is suggested that the high aspect ratio and good distribution of GNPs in the matrix contribute to the low threshold of the composite. The thermal-electrical behavior of the composite is also significantly influenced by the GNP content and microstructure of the composite. When the GNP content is greater than percolation threshold, a noticeable positive temperature coefficient of resistivity disappears. It is explained by the unique conductive network formed by plane contact between GNPs, which is hardly affected by the expansion of matrix during heating.

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“…Effect of processing conditions on the dynamic mechanical behavior of carbon black (CB) filled ethylene/ethylacrylate copolymer (EEA) composites was investigated [116]. The compounds were prepared by two methods, solution blending and mechanical mixing.…”

Section: Mechanical Properties Of Polymer Microcompositesmentioning

confidence: 99%

Mechanical and Viscoelastic Characterization of Multiphase Polymer Systems

Varghese

Thomas

2011

Handbook of Multiphase Polymer Systems

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The Electrophysiological Effect of Fibroblast to the Defibrillation in Aged or Diseased Heart

Cited by 20 publications

References 0 publications

Nylon 6 induced morphological developments and electrical conductivity improvements of polypropylene/carbon black composites

Nylon 6 induced morphological developments and electrical conductivity improvements of polypropylene/carbon black composites

Temperature dependence of the conductivity behavior of graphite nanoplatelet‐filled epoxy resin composites

Mechanical and Viscoelastic Characterization of Multiphase Polymer Systems

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