Nanofiber electrospinning

The distribution of diameters of PEDOT-PSS/PVP nanofibers was insignificantly effected by the applied voltage. To compare PEDOT-PSS/PVP nanofibers with PVP nanofibers, electrospinning was performed under different conditions except the distance was constant between the tip and the collector (15 cm). PEDOT-PSS/PVP nanofib-ers were obtained while applyinga voltage of 11 and 18 kV and a flow rate of 0.2 mL/h and the average diameters were found to be 153 and 212 nm, respectively. By incorporating PEDOT-PSS in PVP, the electrical conductivity of composite nanofibers was improved. 

FIGURE 5.4.1 Fabrication method of nanofibers, electrospinning, self-assembly phase separation, and drawing. 

Key words nanofibers, electrospinning, tissue engineering, scaffolds, bicomponent, vascular grafts. 

Electrospinning parameters are the variables which can be controlled and adjusted in order to manipulate the morphology and feamres of the electrospun nanofibers. Electrospinning parameters are classified into three main categories which are (i) processing (controlled) variables, (ii) ambient (uncontrolled) variables, and (iii) the solution variables (Huang et al. 2003 Pham et al. 2006 Zander 2013). Electrospinning parameters are summarized in Table 1. 

Scheme 4.1 The basic materials and process variables involved in electrospinning of polymer nanofibers. Electrospinning schematic reproduced here with pennission from Hsu and Shivkumar (2004b). Copyright 2004. Springer Science and Business...

Ma Z, Chen F, Zhu YJ, Cui T, Liu XY. Amorphous calcium phosphate/poly(D,L-lactic acid) composite nanofibers electrospinning preparation and biomineralization. J Colloid Interface Sd 2011 359(2) 371-9. 

Kim SH, Nam YS, Lee TS, Park WH (2003) Silk Eibroin Nanofiber. Electrospinning Prop Struct Polym J 35 185-190... 

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