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http://dx.doi.org/10.5714/CL.2011.12.2.070

Molecular structure effects of the pitches on preparation of activated carbon fibers from electrospinning  

Kim, Bo-Hye (Alan G. MacDiarmid Energy Research Institute, Chonnam National University)
Wazir, Arshad Hussain (Alan G. MacDiarmid Energy Research Institute, Chonnam National University)
Yang, Kap-Seung (Alan G. MacDiarmid Energy Research Institute, Chonnam National University)
Bang, Yun-Hyuk (R&D Business Labs, Hyosung Corporation)
Kim, Sung-Ryong (R&D Business Labs, Hyosung Corporation)
Publication Information
Carbon letters / v.12, no.2, 2011 , pp. 70-80 More about this Journal
Abstract
Two pitches with different average molecular structures were electrospun and compared in terms of the properties of their fibers after oxidative stabilization, carbonization, and activation. The precursor with a higher molecular weight and greater content of aliphatic groups (Pitch A) resulted in better solubility and spinnability compared to that with a lower molecular weight and lower aliphatic group content (Pitch B). The electrical conductivity of the carbon fiber web from Pitch A of 67 S/cm was higher than that from Pitch B of 52 S/cm. The carbon fiber web based on Pitch A was activated more readily with lower activation energy, resulting in a higher specific surface area compared to the carbon fiber based on Pitch B (Pitch A, 2053 $m^2/g$; Pitch B, 1374 $m^2/g$).
Keywords
pitch; electrospinning; carbon fiber; spinnability; molecular structure; activation;
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