Preparation and Properties of Melting Electrospun Polylactide/ Polypropylene Core Spun Yarns by Air Vortex Spinning Method

• Main Authors: JO-CHENG CHIANG, 江若誠
• Other Authors: Chang-Mou Wu
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/9e3t5m

碩士 === 國立臺灣科技大學 === 材料科學與工程系 === 104 === This research combined the techniques of melting electronspun and air vortex spinning to form the polylactide (PLA) yarn, through hot drawing, heat setting of PLA and PP core spun yarn. Not only single nozzle, in order to study mass production, multi nozzle melting electronspspun of air vortex PLA yarn was also developed. This research contains three parts. First part, the single nozzle system we discussed. We derived the best PLA electronspspun fiber with the take up speed 120 cm/min and air flow 100 L/min. The results also shows that under 90℃ for heat setting and stretch ratio 2 and 80℃ for the hot drawing with best breaking strength as 2.74 cN/tex. Second part, PLA/PP core spun yarn with best performance under the take up speed 80 cm/min and air flow 100 L/min. The results also shows that without heat setting and stretch ratio 1.2 and 70℃ for the hot drawing with best breaking strength as 2.75 cN/tex. The surface morphology after and before hot drawing and heat setting behaviors were also researched. The last part, we discuss the multi nozzle system. We found the best parameter for the breaking strength, 1.5 cN/tex, as take up speed 140 cm/min. From the deposition morphology, we can realize the shorter working distance have better yarn structure which may meet the minimizing of machine size for the real industrial application.