熔融纺丝法制备PGA长丝的工艺与性能  

Process of melt-spun poly(glycolic acid)filament and its properties

作　　者：王睿[1] 张玉梅[2] 周芬[1] 钱振超 WANG Rui;ZHANG Yumei;ZHOU Fen;QIAN Zhenchao(Shanghai Research Institute of Petrochemical Technology SINOPEC,Shanghai 201208,China;State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620,China)

机构地区：[1]中国石油化工股份有限公司上海石油化工研究院,上海201208 [2]东华大学材料科学与工程学院,纤维材料改性国家重点实验室,上海201620

出　　处：《上海纺织科技》2023年第4期27-31,41,共6页Shanghai Textile Science & Technology

基　　金：中国石油化工股份有限公司委托项目(421063-8)。

摘　　要：为了纺制高品质聚乙醇酸(PGA)长丝,研究了熔融纺丝工艺路线中全流程纺丝工艺参数,包括泵供量、纺丝速度、热拉伸倍数对PGA长丝力学性能的影响,并结合直径、结晶度、取向度等数据确定了最佳的纺丝工艺。研究了PGA初生纤维和牵伸纤维的体外降解性能。试验结果表明:当泵供量为22mL/min,纺丝速度为600m/min,热拉伸倍数为5.0时,PGA长丝的断裂强度达到6.09cN/dtex,断裂伸长率为24.26%;纤维的结晶度越高,相同降解时间内质量损失率越小。In order to spin the high quality polyglycolic acid filaments,the influence of the whole process parameters(pump throughput,spinning speed,drawing ratio)on the mechanical properties of PGA filaments in the melt spinning process route is studied.Combined with the structural changes of diameter,crystallinity,orientation,etc.,the optimal spinning process is finally determined.The in vitro degradation performance of PGA primary fiber and draft fiber were also studied.The results show that when the pump throughput is 22 mL/min,the spinning speed is 600 m/min and the drawing ratio is 5.0,the breaking strength of PGA filaments reaches 6.09 cN/dtex and the elongation at break is 24.26%.The higher the crystallinity of fiber is,the lower the weight loss rate within the same degradation time is.

关 键 词：聚乙醇酸长丝 熔融纺丝 纺丝工艺 降解 力学性能 

分 类 号：TS154[轻工技术与工程—纺织材料与纺织品设计]