Electrostatic spinning

Other monomeric precursors similar to 6-hexynyl-decaborane such as 6-norbornenyl-decaborane (129) and 6-cyclooctenyl-decaborane (131) (Fig. 75) underwent ROMP in the presence of either first- or second-generation Grubbs catalysts to produce the corresponding poly(norbornenyl-decaborane) (130) (Fig. 75) and poly(cyclooctenyl-decaborane) (132) (Fig. 75) with Mn > 30 kDa and polydis-persities between 1.1 and 1.8.152 Electrostatic spinning and pyrolysis of poly (norbomenyl-decaborane) was discovered to produce nanoscale, free-standing porous boron-carbide/carbon, ceramic fiber matrices.153... 

Figure 1. Energy levels due to electrostatic, spin-orbit and crystal field interactions in Pr " ...

Baumgarten PK (1971) Electrostatic spinning of acrylic microfibers. J Colloid Interface Sci 36(l) 71-79... 

There have been several attempts to produce fibers without the use of the conventional extruding and spinneret devices. In electrostatic spinning, for example, an electrostatic field is used to form the polymer into fiber strands (33). This method holds promise, but will require significant development before commercial application can be achieved. 

Verreck, G., Chun, 1., Peeters, J., Rosenblatt, J., Brewster, M.E., 2003. Preparation and characterization of nanofibres containing amorphous drug dispersions generated by electrostatic spinning. Pharmaceutical Research 20, 810—817. 

S-Y Jang, V. Seshadri, M-S. Khil, A. Kumar, M. Marquez, P. T. Mather, and G. A. Sotzing, Welded electrochromic conductive pol3mier nanofibers by electrostatic spinning, Adv. Mater., 17, 2177-2180 (2005). 

Microporous polyether urethane-urea membranes were prepared from DMAc and methylethylketone solutions by electrostatic spinning method [77], The membranes were functionalized using isocyanate agents and further activated... 

Bornat, A. 1982. Electrostatic spinning of tubular products. US Patent 4,323,525. 

Yang KS, Edie DD, Lim DY, Kim YM, Choi YO (2003) Preparation of carbon fiber web from electrostatic spinning of PMDA-ODA poly(amic acid) solution. Carbon 41 2039-2046... 

Nanofiber mats are produced by the process of electrostatic spinning [17]. These mats show a marked increase in water contact angle to values in the range of 150-160° (Fig. 1). Relafively simple equipment is employed for laboratory scale nanofiber fabrication. It consists of a hypodermic syringe, the plunger of which can be driven by a syringe pump. The metal needle of the syringe is pointed to-... 

In recent calculations, the agreement between theory and experiment was further improved by including in the calculations additional interactions, namely, the spin-dependent spin-spin, spin-other-orbit and effective electrostatic-spin-orbit (effective EL-SO) interactions. 

Verreck G, Chun I, Peeters J, Rosenblatt J and Brewster M E (2003), Preparation and characterization of nanoflbers containing amorphous drug dispersions generated by electrostatic spinning , Pharm Res, 20(5), 810-817. DOI 10.1023/A 1023450006281. 

Figure 20.3 Electrochromic device based on electrospun conducting polymer nanofibers. The neutral state (a) and oxidized state (b) are shown. The precursor polymer becomes conjugated and electrochromic by the scheme shown in (c). From S. Jang, V. Seshadri, M. Khil, A. Kumar, M. Marquez, P. T. Mather, G. A. Sotzing, Welded electrochromic conductive polymer nanofibers by electrostatic spinning, Adv. Mater. 17, 2177 (2005). Copyright Wiley-VCH Verlag GmbH Co. KGaA. Reproduced with permission...

MikeS, I. P. Physical principles of electrostatic spinning, in Physical engineering. Teehnieal University in Liberec, Liberee p. 122 (2011). 

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