Carbon fibre compositions comprising lignin derivatives
First Claim
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1. A method of producing a carbon fibre composition, comprising the steps of:
- a. melt spinning a lignin derivative into fibres, wherein the lignin derivative is a self-precipitated lignin derivative or a precipitated lignin derivative obtained from biomass by a pulping process and has a carbon content of 66.5 wt % or greater;
b. stabilizing the fibres; and
c. carbonizing the fibres.
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Abstract
The present disclosure provides derivatives of native lignin suitable for production of carbon fibres wherein the derivatives of native lignin have a certain alkoxy content and/or a certain carbon content. The present lignin derivatives can have acceptable spinnability performance characteristics for producing carbon fibres having acceptable tensile strengths and acceptable modulus of elasticity.
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Citations
14 Claims
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1. A method of producing a carbon fibre composition, comprising the steps of:
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a. melt spinning a lignin derivative into fibres, wherein the lignin derivative is a self-precipitated lignin derivative or a precipitated lignin derivative obtained from biomass by a pulping process and has a carbon content of 66.5 wt % or greater; b. stabilizing the fibres; and c. carbonizing the fibres. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification