Effect of Heat-Treated Process on Tensile Property of PLA Plied-Yarn

摘要

Polylactic acid (PLA) fiber,as a biodegradable synthetic aliphatic polyester fiber,has properties of biocompatibility,biodegradability and processing.Therefore,this study used PLA multifilament to prepare numerous plied yams,respectively 75D,75D×2,75D×3,75D×4 and 75D×5.Afterwards,these yams were twisted with 3,5,7 twist/inch and then heat-treated respectively.The resulting yams were tested for their tensile property tensile tenacity and tensile elongation.Moreover,the heat-treated effect was discussed on influencing tensile property.