Fast and scalable production of crosslinked polyimide aerogel fibers for ultrathin thermoregulating clothes.

ABSTRACT: Polyimide aerogel fibers hold promise for intelligent thermal management fabrics, but their scalable production faces challenges due to the sluggish gelation kinetics and the weak backbone strength. Herein, a strategy is developed for fast and scalable fabrication of crosslinked polyimide (CPI) aerogel fibers by wet-spinning and ambient pressure drying via UV-enhanced dynamic gelation strategy. This strategy enables fast sol-gel transition of photosensitive polyimide, resulting in a strongly-crosslinked gel skeleton that effectively maintains the fiber shape and porous nanostructure. Continuous production of CPI aerogel fibers (length of hundreds of meters) with high specific modulus (390.9 kN m kg^-1) can be achieved within 7 h, more efficiently than previous methods (>48 h). Mo

SUBMITTER: Xue T 

PROVIDER: S-EPMC10725485 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature