Nanofibers encapsulation

The vapor transport properties of nanofiber encapsulated composite membranes are listed in Table 4. Nucrel membrane, which is a random copolymer of polyethylene and 10 % polymethacrylic acid, has a low water vapor transmission rate and poor selectivity. Higher selectivity and high water... 

Figure 5. SEM image of (a) Nucref membrane (bl) PAA electrospun nanofiber mat (b2-bS) PAA nanofiber encapsulated Nucref membrane (cl) polysulfone (PS) electrospun nanofiber mat (c2) PAMPS-g-PS electrospun nanofiber mat (c3) PS nanofiber encapsulated Nucref membrane (c4) PAMPS-g-PS nanofiber encapsulated Nucref membrane.

Dhandayuthapani B, Poulose AC, Nagaoka Y, Hasumura T, Yoshida Y, Maekawa T, Kumar DS (2012) Biomimetic smart nanocomposite in vitro biological evaluation of zein electrospun fluorescent nanofiber encapsulated CdS quantum dots. Biofabrication 4 025008... 

Zheng G, Yang Y, Cha JJ, Hong SS, Cui Y (2011) Hollow carbrui nanofiber-encapsulated suUhr cathodes for high specific capacity rechargeable lithium batteries. Nano Lett 11 4462-4467... 

Sone EDS, Samuel I. Semiconductor-encapsulated peptide-amphiphile nanofibers. J Am Chem Soc 2004 126 12756-12757. 

Stupp, S.I., and Kessler, J.A. Self-Assembling Peptide Amphiphiles Generating Nanofiber Scaffolds for Encapsulation, Growth and Differentiation of Neurons for Therapeutic Uses, 2006-US2354 2006079036 (2006). 

Yu Y, Gu L, Wang C, Dhanabalan A, Van Aken PA, Maier J. Encapsulation of Sn carbon nanoparticles in bamboo-like hollow carbon nanofibers as an anode material in lithium-based batteries. Angew Chem Int Ed. 2009 48 6485-9. 

Su Y et al (2009) Poly(L-lactide-co-epsilon-caprolactone) electrospun nanofibers for encapsulating and sustained releasing proteins. Polymer 5O(I7) 4212-4219... 

This area of research is also denoted as nanobiocatalysis. A range of possible ways to stabilize enzymes in these nanostructures has been developed. Figure 2.23 reports, as an example, a cartoon of the encapsulation of an enzyme inside a silica shell (single enzyme nanoparticles, SENs) [185], and its support over (i) conductive materials (carbon or oxide semiconductor nanofibers or nanotubes) to realize biosensors or electrodes for biofuel cells and (ii) mesoporous materials (e.g., SBA-15, or MCM-41) to develop robust biocatalysts for bioremediation or chemical applications. 

Metal nanoparticles can be easily introduced into the carbon nanotubes tubule or onto the surface of carbon nanotubes and SiC nanotubes/nanofibers by a simple wetness impregnation followed by classical thermal treatments. It is thought that such new nanoscopic encapsulated materials will display unusual properties as compared to those of their unfilled counterparts and could open new opportunities in the catalysis field. 

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