The first example of hollow polynaphthoylenebenzimidazole fiber preparationстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 17 апреля 2024 г.
Аннотация:A new unique two-stage method for spinning hollowpolynaphthoylenebenzimidazole (PNBI) fibers has beenproposed. Polyacrylonitrile (PAN) fiber having a porousmorphology was coated with poly(o-aminophenylene)-naphthoylenimide (PANI-O) precursor to form a compositefiber with a core–shell structure and subsequently this compositefiber precursor was heat treated in air. The inner PANfiber underwent oxidative cyclization, accompanied by itshigh shrinkage, while the PANI-O shell, due to heterocyclization,turned into a PNBI-O shell, and the inner space ofthe hollow fiber was only partially filled with cyclized PAN.