Multiscale Molecular Orientation in Polyacrylonitrile Precursors for Carbon Fibers: Processing Regulation, Characterization Methodologies, and Structure–Property Correlations
Polyacrylonitrile (PAN) precursor fibers represent the dominant feedstock for manufacturing high-performance carbon fibers, and the hierarchical molecular orientation established during precursor processing fundamentally determines the tensile strength and elastic modulus of the final products. However, the precise reg...