90plus 纳米粒度仪应用案例-18
90plus纳米粒度仪应用案例
文献名：electrospinningandsolutionpropertiesofnafionandpoly(acrylicacid)
作者：hongchen,joshuad.snyder,andyossefa.elabd*
departmentofchemicalandbiologicalengineering,drexeluniversity,philadelphia,pennsylvania19104
摘要：inthisstudy,theelectrospinningperformanceandsolutionpropertiesofnafionanditsblendwithanotherpolyelectrolyte,poly(acrylicacid)(paa),wereinvestigated.attemptstoelectrospinpurenafionatvariouspolymerconcentrations(5−35wt%),solvents,neutralization,andelectrospinningconditionsresultedinelectrosprayingratherthanelectrospinning.however,apolymersolutionblend(5wt%)ofnafionandpaaresultedinbeadedfibersat8wt%paaandsmoothelectrospinningabove12%paa.fibersizesoftheblendincreasedfrom90to600nmwithincreasingpaacontent.dynamiclightscatteringonpurenafionsolutionsinvarioussolventsrevealslargeaggregates(i.e.,dispersion)ofvarioussizesduetopolymerbackboneandionicinteractions.thelackofsufficientpolymerchainentanglementevidencedbylowviscosityandaggregateformationinnafionsolutionsprohibitsfiberformationduringelectrospinning.theadditionofpaatonafionmodifiestheionicstrengthofthesolventresultinginsuppressedaggregateformation,increasedviscosity,andsubsequentlyenhancedpolymerchainentanglement.coincidentally,theonsetofsuppressedaggregateformationintheblendsolutioncoincideswiththeelectrospraying−electrospinningtransition(8%paa).inaddition,thermaltreatmentenhanceswaterstabilityoftheelectrospunblendfibers.
蠕动泵软管厂家满足您相对严格的要求
果汁饮料自动化生产线
涡街流量计在电厂测量蒸汽的应用
玉见匠心 坎门机床亮相第二十届玉环机床展
钛包铜复合棒的应用特点及加工技术
90plus 纳米粒度仪应用案例-18
如何选择钢丝绳使用标准
现货ATOS防爆电磁阀DHA-0713/M/7 24DC工作原理
橡胶垫片宜作热机械中的密封衬垫
说说好氧池潜水搅拌机的检修要点
三亚臭氧消毒水箱自洁消毒器机的安装流程
电磁流量计应当如何进行校准
氧气呼吸器校验仪德国 德尔格RZ7000
大米加工机械生产过程中出现温度升高的原因是什么?
滚珠丝杠的故障诊断与维修
电磁兼容标准及测试项目-声音和电视广播接收机
廊坊华克斯橡塑保温板全国
螺旋输送机要喷一层防锈漆
通风机综合参数测试仪
快速工装夹具工装基准的确立
文献名：electrospinningandsolutionpropertiesofnafionandpoly(acrylicacid)
作者：hongchen,joshuad.snyder,andyossefa.elabd*
departmentofchemicalandbiologicalengineering,drexeluniversity,philadelphia,pennsylvania19104
摘要：inthisstudy,theelectrospinningperformanceandsolutionpropertiesofnafionanditsblendwithanotherpolyelectrolyte,poly(acrylicacid)(paa),wereinvestigated.attemptstoelectrospinpurenafionatvariouspolymerconcentrations(5−35wt%),solvents,neutralization,andelectrospinningconditionsresultedinelectrosprayingratherthanelectrospinning.however,apolymersolutionblend(5wt%)ofnafionandpaaresultedinbeadedfibersat8wt%paaandsmoothelectrospinningabove12%paa.fibersizesoftheblendincreasedfrom90to600nmwithincreasingpaacontent.dynamiclightscatteringonpurenafionsolutionsinvarioussolventsrevealslargeaggregates(i.e.,dispersion)ofvarioussizesduetopolymerbackboneandionicinteractions.thelackofsufficientpolymerchainentanglementevidencedbylowviscosityandaggregateformationinnafionsolutionsprohibitsfiberformationduringelectrospinning.theadditionofpaatonafionmodifiestheionicstrengthofthesolventresultinginsuppressedaggregateformation,increasedviscosity,andsubsequentlyenhancedpolymerchainentanglement.coincidentally,theonsetofsuppressedaggregateformationintheblendsolutioncoincideswiththeelectrospraying−electrospinningtransition(8%paa).inaddition,thermaltreatmentenhanceswaterstabilityoftheelectrospunblendfibers.
蠕动泵软管厂家满足您相对严格的要求
果汁饮料自动化生产线
涡街流量计在电厂测量蒸汽的应用
玉见匠心 坎门机床亮相第二十届玉环机床展
钛包铜复合棒的应用特点及加工技术
90plus 纳米粒度仪应用案例-18
如何选择钢丝绳使用标准
现货ATOS防爆电磁阀DHA-0713/M/7 24DC工作原理
橡胶垫片宜作热机械中的密封衬垫
说说好氧池潜水搅拌机的检修要点
三亚臭氧消毒水箱自洁消毒器机的安装流程
电磁流量计应当如何进行校准
氧气呼吸器校验仪德国 德尔格RZ7000
大米加工机械生产过程中出现温度升高的原因是什么?
滚珠丝杠的故障诊断与维修
电磁兼容标准及测试项目-声音和电视广播接收机
廊坊华克斯橡塑保温板全国
螺旋输送机要喷一层防锈漆
通风机综合参数测试仪
快速工装夹具工装基准的确立