化学
溶剂
纳米纤维
溶解度
卤化
聚合
亚甲基
材料科学
高分子化学
碳纤维
水溶液
化学工程
复合材料
有机化学
聚合物
工程类
复合数
作者
Byung Jun Kim,Hyun-Sig Kil,Naoki Watanabe,Min Hyun Seo,Bo Hye Kim,Kap Seung Yang,Osamu Katoh,Jin Miyawaki,Isao Mochida,Seong Ho Yoon
标识
DOI:10.2174/1385272811317130013
摘要
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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