Rheological and Electrical Properties of CB/HDPE Composites

Chen, Xi Liang; Cui, Peng; Ji, Yan Pei

doi:10.4028/www.scientific.net/amm.333-335.1872

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…The present system had a critical exponent β of 2.4, somewhat larger than the stated range. In our previous studies using a CB with a substantially higher surface area, a similar value of β (2.3) was found, but a value as high as 2.9 was recently reported for CB/HDPE systems …”

Section: Resultssupporting

confidence: 82%

Electrically conductive polymeric bi‐component fibers containing a high load of low‐structured carbon black

Nilsson

Rigdahl

Hagström

2015

J of Applied Polymer Sci

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Melt spinning at semi‐industrial conditions of carbon black (CB) containing textiles fibers with enhanced electrical conductivity suitable for heating applications is described. A conductive compound of CB and high density polyethylene (HDPE) was incorporated into the core of bi‐component fibers which had a sheath of polyamide 6 (PA6). The rheological and fiber‐forming properties of a low‐structured and a high‐structured CB/HDPE composite were compared in terms of their conductivity. The low‐structured CB gave the best trade‐off between processability and final conductivity. This was discussed in terms of the strength of the resulting percolated network of carbon particles and its effect on the spin line stability during melt spinning. The conductivity was found to be further enhanced with maintained mechanical properties by an in line thermal annealing of the fibers at temperatures in the vicinity of the melting point of HDPE. By an adequate choice of CB and annealing conditions a conductivity of 1.5 S/cm of the core material was obtained. The usefulness of the fibers for heating applications was demonstrated by means of a woven fabric containing the conductive fibers in the warp direction. By applying a voltage of 48 V the surface temperature of the fabric rose from 20 to 30°C. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42255.

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Section: Resultssupporting

confidence: 82%

Electrically conductive polymeric bi‐component fibers containing a high load of low‐structured carbon black

Nilsson

Rigdahl

Hagström

2015

J of Applied Polymer Sci

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“…The initial dispersion contained 5 wt % carbon black, a sufficient amount to reach the percolation threshold as the solvent evaporates so that the carbon aggregates are in contact with each other throughout the entire volume of the final mixture. 35,36 We found that the carbon black was so hydrophobic that it would not disperse in water without copresence of PEG. 10 wt % PEG could provide a homogeneous stable dispersion of the carbon black, although we did not investigate in detail the effect of the PEG amount on the stability.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Tracking Single DNA Nanodevices in Hierarchically Meso-Macroporous Antimony-Doped Tin Oxide Demonstrates Finite Confinement

Mieritz

Volosin

et al. 2017

Langmuir

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Housing bio-nano guest devices based on DNA nanostructures within porous, conducting, inorganic host materials promise valuable applications in solar energy conversion, chemical catalysis, and analyte sensing. Herein, we report a single-template synthetic development of hierarchically porous, transparent conductive metal oxide coatings whose pores are freely accessible by large biomacromolecules. Their hierarchal pore structure is bimodal with a larger number of closely packed open macropores (∼200 nm) at the higher rank and with the remaining space being filled with a gel network of antimony-doped tin oxide (ATO) nanoparticles that is highly porous with a broad size range of textual pores mainly from 20-100 nm at the lower rank. The employed carbon black template not only creates the large open macropores but also retains the highly structured gel network as holey pore walls. Single molecule fluorescence microscopic studies with fluorophore-labeled DNA nanotweezers reveal a detailed view of multimodal diffusion dynamics of the biomacromolecules inside the hierarchically porous structure. Two diffusion constants were parsed from trajectory analyses that were attributed to free diffusion (diffusion constant D = 2.2 μm/s) and to diffusion within an average confinement length of 210 nm (D = 0.12 μm/s), consistent with the average macropore size of the coating. Despite its holey nature, the ATO gel network acts as an efficient barrier to the diffusion of the DNA nanostructures, which is strongly indicative of physical interactions between the molecules and the pore nanostructure.

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Rheological and Electrical Properties of CB/HDPE Composites

Cited by 2 publications

References 2 publications

Electrically conductive polymeric bi‐component fibers containing a high load of low‐structured carbon black

Electrically conductive polymeric bi‐component fibers containing a high load of low‐structured carbon black

Tracking Single DNA Nanodevices in Hierarchically Meso-Macroporous Antimony-Doped Tin Oxide Demonstrates Finite Confinement

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