Small-Scale Processing of High-Performance BNNT Fiber for Space and Electronics Applications.

ABSTRACT: A method to process boron nitride nanotube (BNNT) fibers with a high degree of alignment, high modulus, and good tensile strength is presented. This has been achieved by dispersing BNNTs in a polymer solution, spinning the resulting polymer/BNNT dispersion into fibers, and removing the polymer. Significant alignment is imparted to the BNNTs within the fiber during drawing and heat treatment under tension. These BNNT fibers are characterized structurally and elementally to confirm the BNNT structure. This work has resulted in a highly oriented BNNT fiber with a modulus as high as 396 GPa and a tensile strength as high as 500 MPa. These tensile values represent the current state of the art for BNNT fibers, and the alignment of BNNTs in the fiber is the highest ever achieved for nanotubes-bas

SUBMITTER: Smith CL 

PROVIDER: S-EPMC12645434 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature