Effect of LiCl in Polymer Solution on the Instable Part of Electrospinning Nanofibers:Theoretical Analysis and Experimental Verification  

作　　者：覃小红 贾琳 李妮 

机构地区：[1]Key Laboratory of Textile Science & Technology,Ministry of Education,Donghua University [2]College of Materials and Textiles,Zhejiang Science & Technology University

出　　处：《Journal of Donghua University(English Edition)》2010年第3期312-315,共4页东华大学学报（英文版）

基　　金：National Natural Science Foundations of China(No.50973014,No.10902099);the Author of National Excellent Doctoral Dissertation of P.R.China(No.200961);Shanghai Rising-Star Program(No.10QA1400100);Fok Ying Tong Education Foundation(No.121071);the Fundamental Research Funds for the Central Universities,China(No.9D10117)

摘　　要：In this paper,the theoretical analysis proves that the relationship between radius r of jet and the axial distance z from the onset of whipping instability follows an allometric law in the form r∝z-1/4 whatever surface charge parameter α is.Polyvinylalcohol(PVA)was used to study the effect of surface charge on the variation of jet diameter with axial coordinate after the onset of whipping instability during electrospinning by adding LiCl.The experiment shows that the relationship between radius r of jet and the axial distance z from the onset of whipping instability also follows the law in the form r∝z-1/4 when the content of LiCl is from 0.2 wt% to 4 wt%.That is,the law does not depend upon the content of salt,and the theoretical prediction agrees quite well with the experimental data.In this paper,the theoretical analysis proves that the relationship between radius r of jet and the axial distance z from the onset of whipping instability follows an allometric law in the form r∝z-1/4 whatever surface charge parameter α is.Polyvinylalcohol（PVA）was used to study the effect of surface charge on the variation of jet diameter with axial coordinate after the onset of whipping instability during electrospinning by adding LiCl.The experiment shows that the relationship between radius r of jet and the axial distance z from the onset of whipping instability also follows the law in the form r∝z-1/4 when the content of LiCl is from 0.2 wt% to 4 wt%.That is,the law does not depend upon the content of salt,and the theoretical prediction agrees quite well with the experimental data.

关 键 词：ELECTROSPINNING Polyvinylalcohol（PVA） scaling ALLOMETRY 

分 类 号：TQ342.31[化学工程—化纤工业]