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Carbon fibre from renewable resources: the role of lignin molecular structure on its blendability with biobased poly (ethylene terephthalate)

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posted on 2019-09-23, 08:59 authored by Anne Beaucamp, Yan Wang, Mario Culebras, Maurice N. Collins
Biobased poly(ethylene terephthalate) has been successfully blended with isopropyl alcohol fractioned hardwood organosolv lignin. The blend compatibility was analysed using Gibbs free energy calculation and confirmed by glass transition temperature measurements as well as morphological study. The obtained carbon fibres from this blend displayed a turbostratic carbon phase and their morphology exhibits a one phase smooth surface. The carbon yield of the blend was found to be improved by fractionation reaching values of ~ 40%. The chemical structure of lignin, most notably the amount of available aromatic hydroxyl groups, was critical for the success of this work. The high molecular weight fraction is enriched with aromatic hydroxyl groups that can crosslink as ether type bonds such as β-O-4 and β-5 bonds. When substituted to aliphatic hydroxyls in a modified lignin, the blend with BPET was found to be incompatible and produced a carbon fibre exhibiting two phases, low carbon yield and a low amount of turbostratic phase.

Funding

Study on Aerodynamic Characteristics Control of Slender Body Using Active Flow Control Technique

Japan Society for the Promotion of Science

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Publication

Journal of Green Chemistry;21, pp. 5063-5072

Publisher

Royal Society of Chemistry

Note

peer-reviewed

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ERC

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© 2019 Royal Society of Chemistry. Personal use of this material is permitted. Permission from Royal Society of Chemistry must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works

Language

English

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