keratin-based nanofibres by electrospinning · funding and collaborations cariplo project “fibers...
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Keratin-basedNanofibres by
ElectrospinningCNR-ISMAC, Sede di BiellaC.so Giuseppe Pella, 16 – 13900 Biellawww.bi.ismac.cnr.it
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KeratinKeratin high sulphur content proteinCysteine content: 7-20% of the total amino acids
Wool and Hair
Keratin proteins are abundant in nature…….
Feather Horns, Nails
> 5.000.000 tons/year of keratin wastes fromBy-products of the textile industryPoor quality raw wool not fit for spinningHairs and feathers from butchery
KERATIN WASTES: KERATIN WASTES: RenewableRenewable SourceSource
Sede di Biella
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AIMAIMNanofibreNanofibre NonNon--WovensWovensKeratinKeratin fromfrom WoolWool
[1] P. Kar and M. Misra, J. Chem. Technol Biotechnol, 2004, 79, 1313-1319
[2] X. Huang, Y. J. Wang and Y. H. Di, Textile Research Journal, 2007, 77(12), 946-950
Properties of regeneratedwool keratin
Heavy metals binding [1]Formaldeyde absorption [2]
Nanofibre non-wovensproperties
High surface/volume ratioHigh porosity
Filtration System
Air Cleaning from VOC’s
Water depuration: especiallyremoval of ultrafine particles and
heavy metals
Sede di Biella
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NanofibresNanofibres byby electrospinningelectrospinning
Electrospinning plant in the ISMAC-Biella laboratory
Sede di Biella
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RegeneratedRegenerated KeratinKeratin::Poor mechanical properties
Non-Thermoplastic Common solvent use(volatile)
Polymer Blend
Electrospinning
NanofibreNanofibreNonNon--WovenWoven
Regenerated Keratinin Formic Acid
15% wt
++
Polyamide 6in Formic Acid
15% wt
BlendsBlends0/1000/10010/9010/9030/7030/7050/5050/5070/3070/3090/1090/10100/0100/0
Sede di Biella
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Blend solutiondecanted overnight Cryogenically fractured sections of blend films
Viscosity
Immiscibility betweenkeratin and polyamide 6
∑=i
iiT lnwln ηη
component i ofviscosity solutionitycosvis ltheoretica
component i the of fraction weightw
thi
T
thi
===
ηη
Additivity Rule
SolutionSolution PropertiesPropertiesSede di Biella
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NanofibreNanofibre MorfologyMorfology
Electrospinning Condition
Voltage 25kV, Flow rate 0.01ml/min, Electrode Distance 10 cm, Capillary 0.40mm
Beads
Sede di Biella
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DiameterDiameter SizeSize DistributionsDistributions of of BlendBlend NanofibresNanofibresSede di Biella
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Formaldehyde adsorptionFormaldehyde adsorption
(Cu(Cu2+2+))
mVCCq t
t)( 0 −=
AdsorbtionAdsorbtion capacity of metal ionscapacity of metal ions
qt (ppm): adsorption capacity at a given time
C0 and Ct : Cu2+ concentration (μg/l) initially and at a given time;
V: volume (l) of the Cu2+ solutions;
m:mass (g) of the nanofibrous mat.
Sede di Biella
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Multijet electrospinningHigh voltage supply
(300 W)
Collector(50 cm x 50 cm)
Multiple-tip spinneretsPressurisedsolution feed
Sede di Biella
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Research groupResearch group
Aluigi AnnalisaMazzuchetti GiorgioMontarsolo AlessioPatrucco AlessiaRombaldoni FabioTonetti CinziaTonin ClaudioVaresano AlessioVineis ClaudiaZoccola Marina
Sede di Biella
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Funding and collaborationsCariplo Project “Fibers on Demand”in collaboration with: Università di Genova,
Stazione Sperimentale per la Seta
FIRB (Fondo per gli Investimenti della Ricerca di Base), D.M. 21 febbraio 2007, prot. n. 234/Ric./2007, Cod. RBIP06HF8S.
LATT “Laboratorio di Alta Tecnologia Tessile” (Regione Piemonte)
HI-TEX (Regione Piemonte)
Industrial partners:Filatura Marchi SpACobarr Centro Ricerche SpASAATI SpAARA SpADe Martini SpANuova ROJ Electrotex S.r.l.Soft N.W. S.r.l.
Research partners:Politecnico di Torino, Department of Materials Science and Chemical Engineering
Sede di Biella
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Future WorkFuture WorkSimplify the keratin extraction method and improve the extraction yield
Increase the keratin content (in order to improve the adsorption performances);
Improve the mechanical properties of the keratin-based filters
Test keratin based nanofibres as scaffolds for cell growth
Study of the multijet electrospinning process to have data for the scale-up
Sede di Biella