Polyacrylonitrile sheath and polyacrylonitrile/lignin core bi-component carbon fibers. (August 2019)

• Record Type: Journal Article
• Authors: Liu, H. Clive; Luo, Jeffrey; Chang, Huibin; Bakhtiary Davijani, Amir A.; Wang, Po-Hsiang; Kumar, Satish
• Is Part Of: Carbon. Volume 149(2019)
• Page Start: 165
• Page End: 172
• Publication Date: 2019-08
• Subjects: Powder properties -- Total phenolic content -- Anthocyanins -- Response surface methodology; Carbon -- Periodicals; Carbone -- Périodiques; Koolstof; Toepassingen; Electronic journals; 546.681
• DOI: 10.1016/j.carbon.2019.04.004
• Languages: English
• ISSNs: 0008-6223

Abstract

Abstract: Polyacrylonitrile (PAN) sheath and PAN/lignin core bi-component fibers have been processed using gel spinning and subsequently carbonized by batch process. By varying the sheath-core volume fraction in the bi-component fibers, solid-sheath/solid-core or solid-sheath/porous-core low density carbon fibers have been manufactured. The solid core fiber, with a lignin content of ∼31 wt%, can be stabilized and carbonized to carbon fiber with a tensile modulus as high as 274 GPa. Carbon fibers with a porous, honeycomb-structured core is reported with a tensile modulus value of 242 GPa. While the lignin incorporation enhances the cost-effectiveness and renewability of carbon fibers, the methods and results in this work demonstrate an approach to harness the design and manufacturing of robust PAN/lignin blend carbon fibers and porous low-density carbon fibers enabled by lignin utilization. Graphical abstract: Image 1