Abstract

An x-ray structure analysis found that increasing the apparent jet spinning of polypropylene complex threads (PCT) from 1400 to 16,300% had practically no effect on the orientation of polymer crystallites but decreased substantially the ability to form a*-oriented packed lamellae in which the molecular chains were perpendicular to the thread axes. It was shown that increasing the jet spinning of PCT enhanced polymer crystallization with formation of fibrillar crystallites of spun threads.

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