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ViewOnline/JournalHomepage/TableofContentsforthisissue PCCPDynamicArticleLinks Citethis:Phys.Chem.Chem.Phys.,2011,13,9969–9972 www.rsc.org/pccpCOMMUNICATION Electrospinningofchitosanderivativenanofiberswithstructuralstability inanaqueousenvironmentw AshleighCooper,aNarayanBhattarai,abForrestM.Kievit,aMichaelRossolaand MiqinZhang*a Received18thDecember2010,Accepted1stFebruary2011 DOI:10.1039/c0cp02909b Wereportasimplemethodtoproducestablechitosanderivativesolutionscanonlydissolveaverysmallamountofchitosan, nanofibersviaelectrospinning.Achitosansolutionwithlactatewhichdoesnotprovideasufficientviscosityorpolymerchain saltwaselectrospuntoproducenanofibers,followedbythermalentanglementrequiredforelectrospinning.9Consequently,a treatmenttoenhancefiberstability.Chemicalandmorphologicalsignificantfraction(e.g.greaterthan10wt%)ofanonionic analysesdemonstratedthattheresultingnanofiberswerepolymer,suchaspolyethyleneglycolorpolyethyleneoxide,is crosslinkedviaamidationbetweenchitosanandlactatesalt.requiredtorenderthesolutionelectrospinnablebydecreasing Thesefibersexhibitedsustainedmorphologicalandstructuralthesolutionviscosity.Inaddition,massproductionisdifficult stabilitiestoserveasascaffoldforbiomedicalapplications.astheelectrospinningrateforthesesolutionsisrelativelylow. Trifluoroaceticacid(TFA)hasbeenusedasanelectro- Polymericnanofibershavedrawnconsiderableattentionspinningsolventforchitosantoyieldarelativelyhigh becauseoftheirpotentialuseinabroadrangeofbiomedicalthroughput.However,thisapproachproduceschitosan applicationssuchasfiltrationdevices,drugdeliverysystems,nanofiberswithrelativelyinferiormorphology(non-uniformity, wounddressings,cosmeticskinmasks,andscaffoldsfortissuebeadedfibersandinterconnectivity)andembeddedammonium engineeringandregenerativemedicine.1,2Recently,therehassaltresiduethatdissolvesuponexposuretoaqueousmedia. beenagrowinginterestinthesynthesisofnanofibersmadeSeveralmethodssuchasneutralizationwithabaseorbasic ofchitosan,acationicpolysaccharidederivedfromthesaltsolu