Nanofibers properties

Response surface methodology (RSM) is a combination of rrtathematical and statistical techniques used to evalirate the relationship between a set of corrtrollable experimental factors and observed results. This optimization process is used in situations where several input variables influence some output variables of the system. The main goal of RSM is to optimize the response, which is influenced by several independent variables, with minimum number of experiments [9,10]. Therefore, the application of RSM in electrospinning process will be helpful in effort to find and optimize the elec-trospun nanofibers properties. 

In this technique water-polymer emulsion is formed which is thermodynamically unstable. At low gelation temperature, nanoscale fibers network is formed, whereas high gelation temperature leads to the formation of platelet-like structure. Uniform nanofiber can be produced as the cooling rate is increased. Polymer concentration has a significant effect on the nanofiber properties, as polymer concentration is increased porosity of fiber decreased and mechanical properties of fiber are increased. The final product obtained is mainly porous in nature but due to controlling the key parameters we can obtain a fibrous structure (Figure 9.29). The key parameters involved are as follows [36]. 

The coverage of applications in the different fields as arising from peculiar polymer nanofiber properties (surface-related, meehanieal, electric, optoelectronic, and biological) complete the book, whose single Chapters 4-7 can be... 

All these effects are classical ones yet have major impact on nanofiber properties and applications. These examples show that nanofibers and nonwovens composed of them display unique properties of functions already based on classical phenomena. This suggests that such fibers/non-wovens can be used with great benefits in various types of applications. The spectrum of applications that can be envisioned for electrospun nanofibers is extremely broad due to their unique intrinsic stmcture, surface properties and functions [67]. 

Hsiao HY, Hutuig CM, Liu YY, Kuo YC, Chen H (2012) Effect of air blowing on the morphology tind nanofiber properties of blowing-assisted electrosprm polycarbonates. J Appl Polym Sci 124(6) 4904-4914. doi 10.1002/app.35599... 

Effect of oxidative treatments on catalytic property of carbon nanofiber composite... 

The formation of carbon over Ni, Fe, and Co has been extensively studied, both for catalytic applications " and for dusting or dry corrosion, the problem of pitting when steels are exposed to hydrocarbons at high temperatures. Recently, the properties of Ni for forming carbon have even been proposed for use in the manufacture of carbon nanofibers. The mechanism on each of these metals, shown diagrammatically in Figure 8a, involves deposition of a carbon source onto the metal surface, dissolution of the carbon into the bulk of the metal, and finally precipitation of carbon as a fiber... 

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