Articles with "mesophase" as a keyword



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Coalescence of mesophase spheres and microstructure of graphitic carbon revealed by scanning electron microscopy

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Published in 2017 at "Journal of Materials Science"

DOI: 10.1007/s10853-017-1364-3

Abstract: The structural characteristics of mesophase spheres slowly coalesced in a petroleum pitch by high-temperature centrifugation were studied by high-resolution SEM, after stabilization and carbonization. The patterns of lamellae stacking as well as fine structural defects… read more here.

Keywords: microscopy; spheres microstructure; mesophase spheres; mesophase ... See more keywords
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Effects of pressure-controlled reaction and blending of PFO and FCC-DO for mesophase pitch

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Published in 2019 at "Carbon Letters"

DOI: 10.1007/s42823-019-00022-2

Abstract: The mesophase pith was synthesized based on effects of a high-pressure thermal condensation and feed (PFO/FCC-DO) blending. The reaction conditions were designed by fluidity and reactivity of each feed during the thermal reaction. The high-pressure… read more here.

Keywords: mesophase; reaction; pfo fcc; pressure ... See more keywords
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Adverse effect of mesophase pitch draw-down ratio on carbon fiber strength

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Published in 2020 at "Carbon"

DOI: 10.1016/j.carbon.2020.06.062

Abstract: Abstract The adverse effect of draw-down ratio (DDR) during melt-spinning of mesophase pitch on resulting properties of carbon fibers (CFs) is reported. Precursor fibers were obtained using spinneret capillaries of various diameters. For CFs with… read more here.

Keywords: strength; pitch; carbon; draw ratio ... See more keywords
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Thermodynamics and phase relationship of carbonaceous mesophase appearing during coal tar pitch carbonization

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Published in 2020 at "Fuel"

DOI: 10.1016/j.fuel.2020.117899

Abstract: Abstract Carbonaceous mesophase appears as an intermediate product in production of electrical and mechanical carbon materials, needle coke for graphite electrodes used in electric-arc furnaces, pitch-based fibers and aluminum-smelting prebaked electrodes through carbonization process. A… read more here.

Keywords: phase; carbonaceous mesophase; carbonization; thermodynamics ... See more keywords
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Effects of the addition of conductive graphene on the preparation of mesophase from refined coal tar pitch

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Published in 2019 at "Journal of Analytical and Applied Pyrolysis"

DOI: 10.1016/j.jaap.2019.04.004

Abstract: Abstract Refined coal tar pitch (RCTP) and conductive graphene were used as raw materials to prepare the mesophase pitch (MP) by pyrolysis and the forming mechanism of MP was also inferred. Polarizing microscope, thermogravimetric analysis… read more here.

Keywords: preparation; graphene; mesophase; refined coal ... See more keywords
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Synthesis and mesophase behaviour of Schiff base/ester 4-(arylideneamino)phenyl-4″-alkoxy benzoates and their binary mixtures

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Published in 2019 at "Journal of Molecular Liquids"

DOI: 10.1016/j.molliq.2018.10.035

Abstract: Abstract Four new groups of Schiff base ester liquid crystal compounds, 4-(arylideneamino)phenyl-4″-alkoxy benzoates, Ina–d, were prepared and investigated for their mesophase formation and stability. An alkoxy group of variable chain length (n = 6, and 16 carbons)… read more here.

Keywords: arylideneamino phenyl; base ester; mesophase; alkoxy benzoates ... See more keywords
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Mesophase in melt-spun poly(ϵ-caprolactone) filaments: Structure–mechanical property relationship

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Published in 2020 at "Polymer"

DOI: 10.1016/j.polymer.2020.122870

Abstract: Abstract Fine poly(ϵ-caprolactone) (PCL) filaments (diameter: 59–92 μm) were successfully melt-spun with modified drawing setups to prevent draw instabilities. Depending on the production parameters, different mechanical properties were obtained (tensile strength: 302–456 MPa, elongation at break: 69–88%).… read more here.

Keywords: melt spun; mesophase; poly caprolactone; mesophase melt ... See more keywords
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Effect of Carbonaceous Precursors on the Structure of Mesophase Pitches and Their Derived Cokes

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Published in 2018 at "Energy & Fuels"

DOI: 10.1021/acs.energyfuels.8b01824

Abstract: Using six representative feedstocks as carbonaceous precursors, various mesophase pitches and their derived cokes were obtained by a heat-soaking method at a temperature range of 400–450 °C and a pyrolysis treatment at 900 °C, respectively.… read more here.

Keywords: mesophase pitches; derived cokes; carbonaceous precursors; pitches derived ... See more keywords
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Effects of Inductive Condensation on Mesophase Development during Aromatic-Rich Oil Carbonization

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Published in 2019 at "Energy & Fuels"

DOI: 10.1021/acs.energyfuels.9b01337

Abstract: A novel method was discussed for the preparation of petroleum-based mesophase pitch with a large domain structure and an ordered microcrystal structure. A condensation pitch with a certain amount of anisotropic structures was generated from… read more here.

Keywords: aromatic rich; mesophase; oil; pitch ... See more keywords
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Mesophase Pitch-Derived Carbons with High Electronic and Ionic Conductivity Levels for Electric Double-Layer Capacitors

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Published in 2019 at "ACS Omega"

DOI: 10.1021/acsomega.9b02243

Abstract: We develop a temperature-programmed pretreatment strategy for converting aliphatic-rich petroleum pitch into a mesophase framework, which can then be activated using KOH to produce high-performance carbons for electric double-layer capacitors (EDLCs). In the pretreatment of… read more here.

Keywords: pitch; layer capacitors; electric double; double layer ... See more keywords
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High strain actuation liquid crystal elastomers via modulation of mesophase structure.

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Published in 2017 at "Soft matter"

DOI: 10.1039/c7sm01380a

Abstract: Control of the mesophase in liquid crystalline elastomers (LCEs) is a critical aspect in harnessing their unique stimuli-responsive properties. Few studies have compared nematic and smectic main-chain LCEs in a direct way. Traditionally, it is… read more here.

Keywords: modulation; spacer; liquid; high strain ... See more keywords