Preparation of Novel Isotropic Pitch with High Softening Point and Solvent Solubility for Pitch-based Electrospun Carbon Nanofiber

Author(s): Byung-Jun Kim, Hyunsig Kil, Naoki Watanabe, Min-Hyun Seo, Bo-Hye Kim, Kap Seung Yang, Osamu Kato, Jin Miyawaki, Isao Mochida, Seong-Ho Yoon.

Journal Name: Current Organic Chemistry

Volume 17 , Issue 13 , 2013

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The novel isotropic pitch that exhibits both high solvent solubility (100% soluble in THF) and a high softening point (over 200°C) was successfully synthesized by the bromination of 2-methylnaphthalene followed by dehydrobromination/polymerization and extraction in n-hexane to eliminate lighter constituents. The molecular structure of the pitch was relatively linear with flexible methylene cross-linkages between naphthalene molecules. During bromination, a reaction temperature of 180°C was necessary to induce bromine substitution of methyl hydrogen. Methylene cross-linkages were formed after the dehydrobromination reaction. The obtained pitch is a suitable precursor for electrospinning and meltspinning to prepare carbon nanofibers and carbon fibers, respectively.

Keywords: Pitch, 2-methylnaphthalene, Bromination, Dehydrobromination, Electrospinning, Carbon nanofiber, Meltspinning, Carbon fiber.

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Article Details

Year: 2013
Page: [1463 - 1468]
Pages: 6
DOI: 10.2174/1385272811317130013
Price: $58

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