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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.2c01024
|2 doi
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|a DE-627
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|a eng
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| 100 |
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|a Kojima, Keiko
|e verfasserin
|4 aut
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|a Liquid Crystalline Behaviors of Single-Walled Carbon Nanotubes in an Aqueous Sodium Cholate Dispersion
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 26.07.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Controlling the alignment of single-walled carbon nanotubes (SWCNTs) on the macroscopic scale is critical for practical applications because SWCNTs are extremely anisotropic materials. One efficient technique is to create an effective SWCNT dispersion, which shows a liquid crystal (LC) phase. A strong acid treatment can realize SWCNT liquid crystalline dispersions. However, strong acids pose a substantial safety risk, which renders the process unfit for mass production. Herein, an isolated SWCNT dispersion displaying an LC behavior is prepared using sodium cholate without an acid treatment, and its phase transition behaviors are systematically investigated across the isotropic to biphasic to nematic phases. As the SWCNT concentration increases, the dispersion undergoes an isotropic-to-nematic phase transition in which the spindle-shaped LC droplets, or the so-called tactoids, and the Schlieren textures can be observed in the intermediate biphasic state and the nematic phase, respectively. The arrangements of SWCNTs in the tactoids and the Schlieren structures are directly investigated by polarized optical microscopy. The clear LC behaviors of the CNT dispersion suggest that the CNT orientations can be controlled by the normal surfactant-assisted method, which is a crucial advantage for the liquid-phase processing of CNT fibers and films
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|a Journal Article
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|a Aizawa, Miho
|e verfasserin
|4 aut
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1 |
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|a Yamamoto, Takahiro
|e verfasserin
|4 aut
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1 |
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|a Muroga, Shun
|e verfasserin
|4 aut
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1 |
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|a Kobashi, Kazufumi
|e verfasserin
|4 aut
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|a Okazaki, Toshiya
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 38(2022), 29 vom: 26. Juli, Seite 8899-8905
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:38
|g year:2022
|g number:29
|g day:26
|g month:07
|g pages:8899-8905
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|u http://dx.doi.org/10.1021/acs.langmuir.2c01024
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