Polymeric nanofibers characterization

Xu, H. and D. H. Reneker (2006). Characterization of electrospinning jets using interference color technique. In Polymeric Nanofibers. ACS Symposium Series 918. Edited by D. H. Reneker and H. Fong. Oxford University Press (USA), pp. 21-33. 

Naraghi M, Chasiotis I, Kahn H, Wen Y, Dzenis Y (2007) Novel method for mechanical characterization of polymeric nanofibers. Rev Sci Instrum 78 085108... 

Normal transmission IRLD can also be used to characterize polymeric fibers, although scattering can induce sloping baselines. Raman spectroscopy then becomes a convenient alternative. Rutledge et al. have recently probed the orientation in electrospun nanofibers composed of a core of Bombyx mori fibroin and an outer shell of poly (ethylene oxide) [24], The orientation values were low, less than 0.1, as is often the case in electrospun fibers. 

G.M. do Nascimento, P.Y.G. Kobata, and M.L.A. Temperini, Structural and vibrational characterization of polyaniUne nanofibers prepared from interfacial polymerization, J. Phys. Chem. B, 112, 11551-11557 (2008). 

The chemical polymerization of Py by CAN in PU solutions leads to the formation of PU/PPy composites. The composites were characterized by Fourier transform infrared spectrophotometry-attenuated total reflectance (FTIR-ATR], dynamic mechanical analysis (DMA], thermal gravimetric analysis (TGA], differential scanning calorimetry (DSC], X-ray photoelectron spectroscopy (XPS], and SEM measurements. The absorbances of the disordered H-bonded urethane carbonyl decrease with increasing Py concentration. The fraction of the hydrogen-bonded carbonyls is increased and the melting point increases with the increase of PPy content. These indicate the incorporation of PPy into PU may cause the complex due to the intermolecular interaction between the PPy and PU. SEM images of composite nanofibers show good distribution of the second component and the composite solution is proper to form conductive composite nanofibers. 

This siloxane-substituted polyCp-xylylene) exhibits an enhanced solubility. Therefore, the characterization with common techniques is possible, as well as processing electrospinning to get nanofibers. High molecular weights at moderate polydispersities were established by Gel permeation Chromatography (GPC) characterization which is unusual in the case of a vapor phase deposition polymerization technique. 

Nanofibers in Conventional Polyaniline Morphological Evolution of Polyaniline during Chemical Polymerization Suppressing Secondary Growth to Make Pure Nanofibers Effect of Solvents on the Intrinsic Morphology of Polyaniline Polyaniline Nanofibers Obtained by Solvent Exchange Processing and Characterization of Polyaniline Nanofibers... 

Electrochemical polymerization results in the synthesis of a thin film on the electrode that is used for further electrochemical and optical characterization. Since this process is very simple and all the standard electrochemical studies can be carried out using minimum amounts of monomer, this is a method of choice when the final polymer is insoluble or the monomer synthesis is tedious or expensive. The solvent for electropolymerization is chosen in such a way that the monomer is soluble, whereas the polymer is insoluble. The electrode surface, nature of the electrolyte and other polymerization conditions play a significant role in the morphology of the polymeric film. It is possible to synthesize various nanostructures including nanofibers, nanodots, nanonetwork, and nano- to microsize tubes of functionalized PEDOTs and PProDOTs. Oxy-thiophenes can be electropolymerized more easily due to their low oxidation potential as compared to alkylthiophenes. ... 

Dhandayuthapani B, Krishnan UM, Sethuraman S (2010) Fabrication and characterization of chitosan-gelatin blend nanofibers for skin tissue engineering. J Biomed Mater Res B Appl Biomater 94(l) 264-272. doi 10.1002/jbm.b.31651 Dhandayuthapani B, Yoshida Y, Maekawa T, Kumar DS (2011) Polymeric scaffolds in tissue engineering application a review, 2011(ii). doi 10.1155/2011/290602 Duan B, Dong C, Yuan X, Yao K (2004) Electrospinning of chitosan solutions in acetic acid with poly(ethylene oxide). J Biomater Sci Polym Ed 15(6) 797-811. doi 10.1163/... 

Xu L R, Bhamidipati V, Zhong W-H, Li J, Lukehart C M, LararCurzio E, Liu K C and Lance M J (2004) Mechanical property characterization of a polymeric nanocomposite reinforced by graphitic nanofibers with reactive linkers, J Compos Mater 38 1563-1582. 

Feng C, Khulbe KC, Matsuura T (2010) Recent progress in the preparation, characterization, and applications of nanofibers and nanofiber membranes via electrospinning/interfacial polymerization. J Appl Polym Sci 115 756-776... 

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