The present work focuses on the determination of volume change accompanying deformation and Poisson's ratio for electrospun nanofibrous membranes. For this purpose, polyurethane (PU) is considered for the fabrication of electrospun nanofibrous membranes. Three different sample thicknesses are fabricated. Following this, surface morphology analysis and fibre orientation analysis are conducted to investigate the variation of properties between electrospun PU membranes of different thicknesses. Subsequently, PU specimens are subjected to uniaxial extension test where the changes in sample width and thickness are recorded as a function of applied strain. Volume changes are computed while further analysis on the relationship between transverse strains and axial strain provided the values of Poisson's ratio. For all three electrospun PU samples investigated, significant volume changes are observed while the in-plane Poisson's ratio is found to be around 0.55. However, the out-of-plane Poisson's ratio of electrospun PU membranes are not classical and remains undetermined.
De JongS, PostleR.An energy analysis of woven-fabric mechanics by means of optimal-control theory part I: tensile properties. J Text Inst. 1977;68:350–361. doi: 10.1080/00405007708631412
2.
LeafG, KandilK.The initial load–extension behaviour of plain-woven fabrics. J Text Inst. 1980;71:1–7. doi: 10.1080/00405008008631627
3.
BaoL, TakateraM, ShinoharaA.Error evaluation on measuring the apparent Poisson's ratios of textile fabrics by uniaxial tensile test. Sen'i Gakkaishi. 1997;53:20–26. doi: 10.2115/fiber.53.20
4.
SunH, PanN, PostleR.On the Poisson's ratios of a woven fabric. Compos Struct. 2005;68:505–510. doi: 10.1016/j.compstruct.2004.05.017
5.
Bais-SinghS, GoswamiBC.Theoretical determination of the mechanical response of Spun-bonded nonwovens. J Text Inst. 1995;86:271–288. doi: 10.1080/00405009508631333
6.
NarterMA, BatraSK, BuchananDR.Proceedings of the Royal Society of London A: Mathematical, Physical and Engineering Sciences Eds.), 3543, Year of Converence.
7.
SchulgasserK.The in-plane poisson ratio of paper. Fibre Sci Technol. 1983;19:297–309. doi: 10.1016/0015-0568(83)90015-5
8.
SzewczykW.Determination of Poisson's ratio in the plane of the paper.Fibres Text East Eur. 2008;4:117.
9.
SpivakA, DzenisY, RenekerD.A model of steady state jet in the electrospinning process. Mech Res Commun. 2000;27:37–42. doi: 10.1016/S0093-6413(00)00060-4
NerurkarNL, ElliottDM, MauckRL.Mechanics of oriented electrospun nanofibrous scaffolds for annulus fibrosus tissue engineering. J Orthop Res. 2007;25:1018–1028. doi: 10.1002/jor.20384
12.
SillTJ, von RecumHA.Electrospinning: applications in drug delivery and tissue engineering. Biomaterials. 2008;29:1989–2006. doi: 10.1016/j.biomaterials.2008.01.011
13.
HwangK, KwonB, ByunH.Preparation of PVdF nanofiber membranes by electrospinning and their use as secondary battery separators. J Memb Sci. 2011;378:111–116. doi: 10.1016/j.memsci.2011.06.005
14.
LiaoY, WangR, TianM, Fabrication of polyvinylidene fluoride (PVDF) nanofiber membranes by electro-spinning for direct contact membrane distillation. J Memb Sci. 2013;425-426:30–39. doi: 10.1016/j.memsci.2012.09.023
15.
PillayV, DottC, ChoonaraYE, A review of the effect of processing variables on the fabrication ofelectrospun nanofibers for drug delivery applications. J Nanomater. 2013;2013:22. doi: 10.1155/2013/789289
16.
TranT, HamidZ, CheongK.In Journal of Physics: Conference Series” Ed. Eds.), 012080, Year of Converence.
17.
BružauskaitėI, BironaitėD, BagdonasE, Scaffolds and cells for tissue regeneration: different scaffold pore sizes—different cell effects. Cytotechnology. 2016;68:355–369. doi: 10.1007/s10616-015-9895-4
18.
KhilMS, ChaDI, KimHY, Electrospun nanofibrous polyurethane membrane as wound dressing. J Biomed Mater Res Part B Appl Biomater. 2003;67:675–679. doi: 10.1002/jbm.b.10058
19.
LiangD, HsiaoBS, ChuB.Functional electrospun nanofibrous scaffolds for biomedical applications. Adv Drug Deliv Rev. 2007;59:1392–1412. doi: 10.1016/j.addr.2007.04.021
20.
CarlbergB, AxellMZ, NannmarkU, Electrospun polyurethane scaffolds for proliferation and neuronal differentiation of human embryonic stem cells. Biomed Mater. 2009;4:045004. doi: 10.1088/1748-6041/4/4/045004
21.
CatalaniLH, CollinsG, JaffeM.Evidence for molecular orientation and residual charge in the electrospinning of poly(butylene terephthalate) nanofibers. Macromolecules. 2007;40:1693–1697. doi: 10.1021/ma061342d
22.
ChoBM, NamYS, CheonJY, Residual charge and filtration efficiency of polycarbonate fibrous membranes prepared by electrospinning.J Appl Polym Sci. 2015;132:n–a. doi: 10.1002/app.41340
23.
Schreuder-GibsonHL, GibsonP, TsaiP.Cooperative charging effects of fibers from electrospinning of electrically dissimilar polymers.Int Nonwovens J. 2005;13:39–45.
24.
TanCJ, LeeJJL, AngBC, Design of polyurethane fibers: Relation between the spinning technique and the resulting fiber topology.J Appl Polym Sci. 2019;136:47706. doi: 10.1002/app.47706
25.
HuanS, LiuG, HanG, Effect of experimental parameters on morphological, mechanical and hydrophobic properties of electrospun polystyrene fibers. Materials (Basel). 2015;8:2718–2734. doi: 10.3390/ma8052718
26.
LeeJJL, AndriyanaA, AngBC, Electrospun PMMA polymer blend nanofibrous membrane: electrospinability, surface morphology and mechanical response. Mater Res Express. 2018;5:065311. doi: 10.1088/2053-1591/aac87b
TanE, GohC, SowC, Tensile test of a single nanofiber using an atomic force microscope tip. Appl Phys Lett. 2005;86:073115. doi: 10.1063/1.1862337
29.
WongS-C, BajiA, LengS.Effect of fiber diameter on tensile properties of electrospun poly(ϵ-caprolactone). Polymer (Guildf). 2008;49:4713–4722. doi: 10.1016/j.polymer.2008.08.022
30.
BajiA, MaiY-W, WongS-C, Electrospinning of polymer nanofibers: effects on oriented morphology, structures and tensile properties. Compos Sci Technol. 2010;70:703–718. doi: 10.1016/j.compscitech.2010.01.010
31.
WarfieldR, BarnetFR.“Elastic constants of bulk polymers”, NAVAL ORDNANCE LAB WHITE OAK MD, 1972.
32.
GreavesGN, GreerA, LakesR, Poisson's ratio and modern materials. Nat Mater. 2011;10:823–837. doi: 10.1038/nmat3134
33.
DonescuS, ChiroiuV, MunteanuL.On the Young's modulus of a auxetic composite structure. Mech Res Commun. 2009;36:294–301. doi: 10.1016/j.mechrescom.2008.10.006
34.
LiY, ZengC.On the successful fabrication of auxetic polyurethane foams: materials requirement, processing strategy and conversion mechanism. Polymer (Guildf). 2016;87:98–107. doi: 10.1016/j.polymer.2016.01.076
35.
WongD, AndriyanaA, AngBC, Surface morphology and mechanical response of randomly oriented electrospun nanofibrous membrane. Polym Test. 2016;53:108–115. doi: 10.1016/j.polymertesting.2016.05.020
