An Introduction to Electrospinning and Nanofibers by et al Seeram Ramakrishna

By et al Seeram Ramakrishna

The learn and improvement of nanofibers has received a lot prominence in recent times because of the heightened understanding of its capability functions within the clinical, engineering and safeguard fields. one of the so much profitable equipment for generating nanofibers is the electrospinning procedure. during this well timed booklet, the components of electrospinning and nanofibers are lined for the 1st time in one quantity. The ebook will be extensively divided into elements: the 1st includes descriptions of the electrospinning procedure and modeling to procure nanofibers whereas the second one describes the features and functions of nanofibers. the cloth is geared toward either beginners and skilled researchers within the region.

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2004); Ko et. al. (2003)]. Composite consisting of polymer matrix with ceramic particles can also be used to form two-phase piezoelectric composites [Tressler et. al. (1999)]. 3. Ceramics Unlike polymer, where there is usually no need for post-electrospinning process, ceramics nanofibers can be made from electrospinning of the ceramic precursors and followed by sintering of the electrospun fibers to derive ceramic fibers [Dai et. al. (2002); Madhugiri et. al. (2004); Shao et. al. (2004c)]. Ceramics are materials that composed of both metallic and non-metallic elements and commonly exist as compounds of oxides, nitrides and carbides.

5wt% Bognitzki et. al. (2001) Poly(vinyl chloride), 60% Tetrahydrofuran: 13wt% Lee et. al. (2003a) PVC 40% N,NDimethylformamide 75% Poly(vinyl chloride) 60% Tetrahydrofuran: 13wt% Lee et. al. 3(c). Electrospun polymer fibers. Synthetic Polymer Solvent 50% Poly(vinyl chloride) 60% Tetrahydrofuran: 50% Poly(urethane) blent 40% N,NDimethylformamide 25% Poly(vinyl chloride) 60% Tetrahydrofuran: 75% Poly(urethane) blenc 40% N,NDimethylformamide Poly(vinyl pyrrolidone) Ethanol 65%ethanol: 35% DMF Poly(vinylidene fluoride), N,N-Dimethylacetamide PVDF Poly(vinylidene fluoride- 70% Acetone: 30% co-hexafluoropropylene, DMAC P(VDF-HFP) I Concentration Reference 13wt% Lee et.

The reinforcing particles need not be equal sizes as in the case of concrete and the volume fraction of the particles can be higher than that of the matrix. The irregularly shaped particles provide strength through mechanical interlocking. Another form of aggregate composite is known as particulate composite. In this case, the volume fraction of the particles is much lower than that of the matrix. In conventional composites, the thermal expansion mismatch of the particle matrix material will result in high dislocation density in the matrix during cooling from the fabrication temperature.

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