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《China Synthetic Fiber Industry》 2006-05
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Study on melt spinning process and properties of trilobal profiled polylactic acid fiber

Yan Yurong,Zhao Yaoming , Zhan Huaiyu, Mo Junying (Department of Polymer Materials Science and Engineering, College of Material Science and Engineering, South China University of Technology, Guangzhou 510640;State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640)  
Trilobal profiled polylactic acid (PLA) fiber with a profiled degree of 52% was prepared from PLA with intrinsic viscosity 1.51 dL/g using trilobal profiled spinneret via melt spinning process. The thermal and mechanical properties of the trilobal profiled PLA fiber were studied. The results showed that the breaking strength and initial modulus were increased with the increase of draw ratio and reached to 2. 39 cN/dtex and 17. 27 cN/dtex at 4-time drawing, respectively. The crystalline structure was formed with different crystal layerthickness during the slow cool crystallization process of PLA. A certain degree of free fibrillar structure was observed on the fiber surface due to the sheath structure of the fiber subjected to the greater drawing and orientation.
【CateGory Index】: TQ342.29
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