Potentials of Polyacrylonitrile Substitution by Lignin for Continuous Manufactured Lignin/Polyacrylonitrile-Blend-Based Carbon Fibers

Autor: Daniel Sebastian Jens Wolz, Robert Seidel-Greiff, Thomas Behnisch, Iris Kruppke, Irina Kuznik, Paul Bertram, Hubert Jäger, Maik Gude, Chokri Cherif
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Fibers, Vol 12, Iss 6, p 50 (2024)
Druh dokumentu: article
ISSN: 2079-6439
DOI: 10.3390/fib12060050
Popis: While carbon fibers (CFs) are still the most attractive reinforcement material for lightweight structures, they are mostly manufactured using crude oil-based process chains. To achieve a higher eco-efficiency, the partial substitution of polyacrylonitrile (PAN) by renewable materials, such as lignin, is investigated. So far, this investigation has only been carried out for batch manufacturing studies, neglecting the transfer and validation to continuous CF manufacturing. Therefore, this work is the first to investigate the possibility of partial substituting lignin for PAN in a continuous process. Lignin/PAN-blended CFs with up to 15 wt.-% lignin were able to attain mechanical properties comparable to unmodified PAN-based carbon fibers, achieving tensile strengths of up to 2466 MPa and a Young’s Modulus of 200 Pa. In summary, this study provides the basis for continuous Lignin/PAN-blended CF manufacturing.
Databáze: Directory of Open Access Journals