A General Strategy to Electrospin Nanofibers with Ultrahigh Molecular Chain Orientation

作     者：Xian Wen Jian Xiong Zhaoyang Sun Liming Wang Jianyong Yu Xiaohong Qin Xian Wen;Jian Xiong;Zhaoyang Sun;Liming Wang;Jianyong Yu;Xiaohong Qin

作者机构：Key Laboratory of Textile Science and TechnologyMinistry of EducationCollege of TextilesDonghua UniversityShanghai 201620China State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsDonghua UniversityShanghai 201620China Innovation Center for Textile Science and TechnologyDonghua UniversityShanghai 201620China 

出 版 物：《Engineering》 (工程（英文）)

年 卷 期：2023年第29卷第10期

页      面：179-187页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：partly supported by the grants(51973027 and 52003044)from the National Natural Science Foundation of China the Fundamental Research Funds for the Central Universities(2232020A-08) International Cooperation Fund of Science and Technology Commission of Shanghai Municipality(21130750100) Major Scientific and Technological Innovation Projects of Shandong Province(2021CXGC011004) supported by the Chang Jiang Scholars Program the Innovation Program of Shanghai Municipal Education Commission(2019-01-07-00-03-E00023)to Prof.Xiaohong Qin Young Elite Scientists Sponsorship Program by China Association for Science and Technology,State Key Laboratory for Modification of Chemical Fibers and Polymer Materials(KF2216) Donghua University Distinguished Young Professor Program to Prof.Liming Wang 

主　　题：Molecular orientation Electrospinning Nanofibers Electric field Polyethylene oxide 

摘      要：The degree of polymer chain orientation is a key structural parameter that determines the mechanical and physical properties of ***,understanding and significantly tuning the orientation of fiber macromolecular chains remain ***,we propose a novel electrospinning technique that can efficiently modulate molecular chain orientation by controlling the electric *** contrast to the typical electrospinning method,this technique can piecewise control the electric field by applying high voltage to the metal ring instead of the *** from this change,a new electric field distribution can be realized,leading to a non-monotonic change in the drafting *** a result,the macromolecular chain orientation of polyethylene oxide(PEO)nanofibers was significantly improved with a recordhigh infrared dichroic *** was further confirmed by the sharp decrease in the PEO jet fineness of approximately 80%and the nanofiber diameter from 298 to 114 ***,the crystallinity can also be adjusted,with an obvious drop from 74.9%to 31.7%,which is different from the high crystallinity caused by oriented chains in common *** work guides a new perspective for the preparation of advanced electrospun nanofibers with optimal orientation–crystallinity properties,a merited feature for various applications.