https://doi.org/10.1351/goldbook.M03851
Mesophase pitch
-based carbon fibres (MPP-based carbon fibres) are carbon fibres
obtained from mesogenic pitch
after it has been transformed into mesophase pitch
(MPP) at least during the process of spinning, and after the spun mesophase pitch
fibres have been made non-fusible (stabilized) and carbonized.