Abstract
AbstractPolyamide 56 (PA56) fibers were prepared by one‐step melt spinning and drawing process. The effects of draw ratio and draw temperature on the structure and properties of PA56 fibers were investigated. Both α‐like‐ and γ‐crystalline phases were formed in PA56 fibers. An increase in the draw ratio at a given draw temperature leads to the significantly increase in crystallinity, chain orientation, and the content of the α‐like crystalline phase in the resultant PA56 fibers. The crystallinity and orientation parameters of the PA56 fibers increase with draw temperature in the range of 130–190°C. The PA56 α‐like crystalline phase is unfavorable at a higher draw temperature. The optimal process parameters for PA56 fibers with good mechanical properties are at draw ratio above 3 and with a draw temperature in the range of 150–190°C.
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