Nanofibrous polyurethane

Kliil MS et al (2003) Electrospun nanofibrous polyurethane membrane as wound dressing. J Biomed Mater Res B Appl Biomater 67(2) 675-679... 

Turner KG, Ahmed N, Santerre JP, Kandel RA. Modulation of annulus fibrosus ceU alignment and function on oriented nanofibrous polyurethane scaffolds under tension. Spine J 2014 14 424-34. 

Meng J et al (2009) Enhancement of nanofibrous scaffold of multiwalled carbon nanotubes/ polyurethane composite to the fibroblasts growth and biosynthesis. J Biomed Mater Res A 88 (1) 105-116... 

Meng J et al (2010) Electrospun aligned nanofibrous composite of MWCNT/polyurethane to enhance vascular endothelium cells proliferation and function. J Biomed Mater Res A 95 (l) 312-320... 

Han ZZ et al (2008) Growing behavior of endothelial cells on electrospun aligned nanofibrous film of polyurethane. Chem J Chin Univer-Chin 29(5) 1070-1073... 

Other synthetic polymers that have been utilised in the development of biomedical nanofibrous structures include the nonbiodegradable polyurethane (KhU et al., 2003 Kim et al., 2009 Verreck et al., 2003) and biodegradable polydioxanone (Kalfa et al., 2010). 

Details of vegetable oil-based polymers conventional composites have been discussed in an earlier chapter. In this chapter, nanocomposites of vegetable oil-based polymers are discussed. Certain questions arise as to how much difference there is between these composites. The questions are significant when the same reinforcing agent is used in both cases. As an example, a vegetable oil-based polyurethane with alkali-treated chopped jute fibres in a conventional composite and cellulose nanofibres (obtained from jute fibres) in a vegetable oil-based polymer nanocomposite are discussed. The... 

Electrical properties such as conductivity, resistivity, I (current)-V (voltage) characteristics of vegetable oil-based polyurethane nanocomposites are sometimes influenced by nanocomposite formation with a suitable nanomaterial. BaTiOs superfine fibre-filled castor oil-modified polyure-thane/poly(methyl methacrylate) interpenetrating polymer network nanocomposites exhibit an increase in conductivity between insulator and semiconductor with an increase in nanofibre loading. ... 

Vascular TE Bioartificial blends of polyurethane and collagen, gelatin, fibrinogen, and bovine serum albumin Electrospun nanofibres with a size in the range of 245-275 nm Jia et al. (2013) and Wong et al. (2013)... 

Montini-Ballarin F, Caracciolo PC, Blotta E, Ballarin VL, Abraham GA. Optimization of poly(L-lactic acid)/segmented polyurethane electro spinning process for the production of bilayered small-diameter nanofibrous tubular structures. Mater Sci Eng C 2014 42 489-99. 

Han ZZ, Kong H, Meng J, Wang CY, Xie SS, Xu HY. Electrospun aligned nanofibrous scaffold of carbon nanotubes-polyurethane composite for endothelial cells. J Nanosci Nanotechnol 2009 9 1400-2. 

Shin JW, Lee YJ, Heo SJ, Park SA, Kim SH, Kim YJ, et al. Manufacturing of multilayered nanofibrous structures composed of polyurethane and poly(ethylene oxide) as potential blood vessel scaffolds. J Biomater Sci Polym Ed 2009 20 757-71. 

Another modified spinneret was designed with multiple single jets in order to enhance nanofibers spinning rate of PEO (Theron et al. 2005) or to prepare nanofibrous mats composed of two different and immiscible polymers such as PVA and cellulose acetate. A multiple jet composed of four tips was used in order to blend PVA and cellulose acetate nanofibers in different ratios (Pham et al. 2006). In another study, a collector moving transversely was used in front of a multiple jet composed of two tips in order to produce a mixture of electrospun PEO and polyurethane (PU) nanofibers and a uniform distribution of this mixture was achieved due to the motion of the collector (Kidoaki et al. 2005). 

The morphology of the membranes functionalized with MWNT is shown in Figure 13.13. Fibers show their typical random orientation. Interestingly, also the MWNT appears randomly distributed, deployed around the surface of the fibers. This web-like morphology also provides a high textile strength. Sen et al. [73] reported that SWCNT-reinforced nanofibrous membranes made by polystyrene and polyurethane (PU) have a tensile... 

Zeng et al. (2013) have demonstrated a fibre nanogenerator made from a PVDF-NaNbOs nanofibre non-woven web, which is capable of generating a peak open-circuit voltage of 3.4 V and a peak current of 4.4 pA in a cyclic compression test. The non-woven web was sandwiched between elastic-conducting knitted fabrics made from segmented polyurethane yams wrapped with silver-coated polyamide multifilament yams. The whole device was packaged between layers of poly dime thy Isi-loxane to enhance its mechanical robustness. 

Zhuo H.T., Hu J.L. and Chen S.J. (2008), Electrospun polyurethane nanofibres having shape memory effect. Materials Letters, 62(14) pp. 2074-2076. 

Zhuo H., Hu J. and Chen S. (2011), Study of the thermal properties of shape memory polyurethane nanofibrous Journal of Materials Science, 46 ... 

Han, Z., H. Kong, J. Meng, C. Wang, S. Xie, and H. Xu. 2009. Electrospun aUgned nanofibrous scaffold of carbon nanotubes-polyurethane composite for endotheUal cells. JNanosci Nanotechnol 9(2) 1400-2. 

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