静电纺丝工艺参数对纤维直径影响的研究_实验及数值模拟.pdf

»35 »6ù2009M12ê¿vÐÐ(1– SÐñ)JOURNAL OF DONGHUA UNIVERSITY(NATURAL SCIENCE)Vol135, No. 6Dec. 2009ÓcI|: 1671-0444( 2009)06-0632-07áÈa´ý\•”8»°å•Y¥ùî:L#”´E*肖婉红,曾泳春(ê¿vÐa®Ðý,Z201620)K 1: 采用聚氧化乙烯(PEO)为原料对静电纺丝过程的实验参数进行研究,探讨了溶液质量分数a外加电压a接收距离和溶液流速4个参数对纤维直径和纤维网形态的影响.同时,通过数值模拟的方法对外加电压a接收距离及溶液弹性模量3个参数对纤维直径的影响进行研究,并和实验结果进行比较.1oM: 静电纺丝;聚氧化乙烯(PEO) ;参数;模拟Ïms Ë|: TS 102. 6 ÓDS½’: AEffects of Parameters on Fiber Diameter in Electrospinning:Experimental and Numerical SimulationXI A O W an-hong , ZEN G Yong-chun( College of Textiles, Donghua University, Shanghai 201620, China)Abstract: Polyethylene oxide ( PEO) is used to study the effects of parameters including concentration,applied voltage, collect distance and flow rate on fiber diameter and morphology. Meanwhile, numericalsimulation is used to study the effects of applied voltage, collect distance and elastic modulus on fiberdiameter. The results of experimental and simulation study are compared with each other.Key words: electrospinning; polyethylene oxide ( PEO); parameter; simulation®,Ü8»Å,3þDÐaVr‹a +¨[#ý,Œ^’És”rž9%H,a´·A*þv,*ÌE ï9Vv[ 10] ,P¤@MŸþµ,a´VñM¤  ’4.m2 ‚]PEOÉs”îa¥,Ü8»SEMmËFig. 2 SEM photos of the nanofibers of differentPEO concentration1. 4. 2 接收距离的影响%çPEOÉs”¹5%aÈâ10 kVa·A@Î0. 5 mL /haŒh=å1. 0 mm,sY¤l Ö¹15, 20, 25 cm¥Hq/É›a´,TÂV2îU.V2 ‚]¤l  Öî¤a´ë„°åTable 2 The mat areas and fiber average diameterswith different collect distance¤l  Ö/cma´ë/cm2Ü (°å/nm15 57. 2 12220 79. 8 11925 87. 6 108VV2 V[ A,Û"¤l  Ö¥9F,8»¥°åhl,a´ë9v.¤l  Ö8»°å¥•YµñZë¥yÍ:BZë  Ö¥9FP¤»6ùo¢£,©:áÈa´ý\•”8»°å•Y¥ùî:L#”´E635 @µ÷ ˜%„Gî¥ö,V7P8»¥°åM¤÷l;6BZëÈÆ ïÛ"¤l  Ö¥9F7hl,P¤8»¥FÎMl,7¤ Y¥8».¤l  Ö8»°å¥•Y^ƒñyÍ F™¥²T.'ÓN¤l  ÖS¶=,Û"¤l  Ö¥9v,8» ˜%„Gî¥  Ö9v,a´ë¥9v9ªüGî–¥9v,y7¤ %¥8».Âm3îU¹¤l  ÖsY¹15„25 cmHîa¥8»¥SEMm.®m3 V A,Û"¤l Ö¥9F,8»°åöhl.¤l  Ö¿áÈa´“×1,Ϥl  Öþ,·4Î Ÿ‚#è?,“¸^l"žü·A,YVáíÈä?C,žr¤sÂ8»Ð8»WMºŒ*B,•Y8»¥Ÿ?.ÂT¤l  ÖVv,ÈÆ ïüöMÐ,8»¥Y% (9ö/†.m3 ‚]¤l  Ö/îa¥,Ü8»SEMmËFig. 3 SEM photos of the nanofibers of differentcollect distance1. 4. 3 外加电压的影响%ç¤l  Ö20 cmaPEOÉs”5%aŒ d=å1. 0 mma·A@Î0. 5 mL /h,sYÈâ¹10, 15, 20, 25 kVÉ›a´,L²TÂV3îU.V3 ‚]Èâî¤a´ë„°åTable 3 The mat areas and fiber average diameterswith different voltageÈâ/kVa´ë/cm2Ü (°å/nm10 79. 8 11915 72. 2 12720 71. 2 13125 74. 3 123áÈa´VñÏáÈâ^a´Vñ¥zî ï,a´°å„×矕YüA,8»°åÛÈâ¥6Ú59vªhl.1¿Èâî¤8»°å¥•Y,[ªùž¥L²Ti‚BÁ,ŒûªüÈâ8»°å•Yi‚A÷.Bd^:’·A@Àµsž eÅH,“FÈâQ˜¥^P·AV¨´ g*¥ ï,yN,÷Ú¥ÈâP¤÷¥·AV¨´ g*,V7P¤8»°åµî9F.V6BZë Ÿª,Èâ¥9FP¤@î{¥È€9F,öP¤ o ï¥9F7F Gî,Á@ ˜%9F,V7¤ž÷%¥8».YL,îF¥Èâ*¥ †þÉ„@ ˜%ûµ•Y,’ †þÉ¥•Y¹öH,Û"Èâ6Ú,8»°å9v;’Gî•Y¹öH,ÈâÚ¥H©8»°åöµîhl.'Ó¥ùî%ç·A@Î,¤ž¥²‚^Èâ8»°å¥•Y1 ¯,‚NV†B¥t].Âm4îU¹ÈâsY¹15, 20, 25 kVHîa¥8»¥SEMm,Èâ¹20 kVH,îaÅ¥636 ê¿vÐÐ(1– SÐñ)»35 m4 ‚]Èâ/îa¥,Ü8»SEMmËFig. 4 SEM photos of the nanofibers of differentapplied voltage8»°åKY.Ð8»°åB",a´ë¥MÄ]"‚A÷,vÁt]^:V10 kVž20 kV,Û"Èâ9v,a´ëhl,ªüGîhl,yN¤ Y¥8»;V20 kVž25 kV,Û"Èâ¥ÉB„9v,a´ë9v,ªüGîMv,yN¤ %¥8».1. 4. 4 溶液流速的影响%ç¤l  Ö20 cmaPEOÉs”5%aŒh=å1. 0 mmaÈâ10 kV,sY·A@ι0. 3,0. 5, 0. 7 mL /h¥Hq/a´,L²TÂV4îU.VV4 V[ A,Û" †þ·A@Î¥9F,8»°åµî9F,ŒMÄ‚A÷,a´ë¥MÄ9‚üA,Û"@Î¥9F7{µîhl.PEO8»ÜVa´¥d×ç¥GîîVñª,·4áÎè?,®¿±ÿ,ó·A9F,è?Hq‚M,·4è?MÄ‚v,ƒ"8»V4 ‚]·A@Îî¤a´ë„°åTable 4 The mat areas and fiber average diameterswith different solution flow rate@Î/( mL # h- 1)a´ë/cm2Ü (°å/nm0. 3 82. 4 1130. 5 79. 8 1190. 7 81. 4 123Ï·É„·4û9F,î[8»°åFv;N“,·A@Î9F,È€áhl,ÈÆ ïl,P¤8»°å9F.a´ë¥hlªü8»¥Gî–µîhl,V7¤ Y¥8».@ÎVvH,a´ëµî9F, V?^y¹’Œh)µA¯¥H©,ü À¥ÊÂöÛ"A¯¥‚]7µî¿M,î[´¥¨Z_9ö?3MÄ,V7Pa´ëµî9F.Âm5îU¹ †þ·A@ÎsY¹0. 3,m5 ‚]·A@Î/îa¤ž,Ü。