Electrospinning electrospun mats

Brunauer-Emmett-Teller Electrospinning Electrospun polylacticacid Nanofiber mats Nylon 6... 

As an alternative approach to blending, natural and synthetic polymers can be combined in fibrous scaffolds fabricated by core—shell techniques. Chen et al. (2010) prepared nanofibrous scaffolds by core—shell electrospinning based on a commercial thermoplastic PUR and collagen as the fibre core and shell, respectively. The collagen shell was cross-linked by glutaraldehyde vapours. The electrospun mats showed an intermediate mechanical behaviour as compared to the pure component electrospun membranes moreover, the core—shell electrospun membranes were found to support in vitro adhesion and proliferation of pig iliac endothelial cells. 

Concentration effects in electrospinning of triblock copolymer and polylactide on cell proliferation and hydrophiUcity of the electrospun mats, investigated. 

With the same idea of the previous works and taking into accoimt the advantages of electrospinning technique, a possible solution to problems concerning antibiotics elution from PMMA cement coatings could be the development of electrospun mats with a controllable porosity. The mat and fibers morphologies obtained from this technique can be tailored in order to fulfill the needed characteristics by choosing different processes and solution parameters [161]. 

Lee et al. explored the application of zinc oxide nanoparticles to polypropylene nonwoven fabrics via electrospinning as one approach to impart UV-protective properties. In addition, moisture and air vapor transport characteristics of layered clothing systems with various levels of electrospun mat area density are assessed to observe the consequence of electrospun web layers on thermal comfort level of the layered structures (Fig. 14.6c) [56]. Ultrafine cellulose fibers from natural cotton lines, whose degree of polymerization was above 10,000, were electrospun. The cellulose nanotibers treated with the hydrothermal incorporation of Ce02 nanoparticles into the nanofiber substrate surface showed good UV-shielding properties... 

In order to improve the properties and the spinnability, fibroin sometimes has been electrospun together with other natural or synthetic polymers (Jin et al., 2002 Park et al., 2004, 2006 Wang et al., 2004, 2006). For instance, Jin et al. (2002) developed an aqueous process for silk electrospinning in combination with PEO. More recently, Cao (2008) used PVA/Silk Fibroin (SF), Gelatin/SF, and Hydroxyapatite (HAP)/SF to produce double-layered (core-shell) nanofibers (mats) by coelectrospinning. 

Fig. 4 (a) Electrospinning setup with counter electrodes used to focus the area of fiber deposition, (b-e) Images of resultant nanofiber mats electrospun with (b) no auxiliary electrodes, (c) one auxiliary counter electrode, and (d, e) both counter and like electrodes with different separation distances between them [48]... 

The electrospinning of poly(s-caprolactone) (PCL) solutions have been reported by Reneker et al. [74]. They varied the PCL solution concentrations between 14 and 18 wt%. The instability in the electrospinning of PCL results in the contact and merging of segments in different loops of the electrospinning jet to form garlandlike fibrous structures [74]. Yoshimoto et al. [75] have studied the potential of electrospun PCL fiber mats for use in bone tissue engineering. They found that the... 

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