Abstract
Commercial nylon 66 fiber was dipped in a chloroform solution of dicumyl peroxide (DCP) by refluxing under N2 atmosphere for predetermined days and then it was heated at 150°C for 2hr resulting in crosslinking. The fiber became insoluble in hot formic acid after 5 days of dipping. By the treatment the crystalline region was little changed and a part of DCP was crystallized in the amorphous region. Tenacity and elongation decreased and modulus increased with crosslinking. Upon water absorption, decrease of tenacity and elongation was not observed for the crosslinked fibers.
