Nanocomposites concept

Cross-fertilization Advanced nanoengineered devices by integration of catalysis, membranes, biotech materials, porous solids, and nanocomposites concepts... 

Carbon-based nanocomposite concepts have been successfully developed to limit or reduce these adverse effects and at the same time enhance the electron or ion transport [8]. CNT is an ideal building block in the carbon-inorganic composite/hybrid due to its mechanical, physical, chemical properties as mentioned above. CNTs are apparently superior to other carbonaceous materials such as graphite or amorphous carbon and are more adaptable to the homogeneous dispersion of nanoparticles than other carbonaceous materials [36],... 

P. Anadao, Polymer/Clay Nanocomposites Concepts, Researches, Apphcations and Trends for the Future. In Nanocomposites - New Trends and Developments E Ebrahimi, Ed. InTech, 2012. 

The nanocomposite concept appears to have its origin in pioneering research conducted in Japan by Unitika, Ltd. in the 1970s [1] and separatdy by Toyota Central Research and Development Laboratories in the late 1980s [2]. The theory was that if nanodays could be fully dispersed or exfohated to high aspect ratio platelets into polymers at relatively low levels (2-5 wt%), a number of mechanical and barrier properties would be enhanced. The original work at both Unitika and Toyota CRDL... 

A variety of potential host systems induding polyamides, polyolefins, PVC, TPU, PLA, EVA, ionomers, rubber, recycled streams, and polymer blends have been evaluated for nanodays. Although exfoliation has been achieved in many polymers, it has not led to significantly improved mechanical properties other than modulus. The high degree of interest in the nanocomposite concept has not yet resulted in a... 

Anadao P., 2012. Polymer/clay nanocomposites Concepts, researches, applications and trends for the future. In Nanocomposites New Trends and Developments, ed. F. Ebrahimi, 1-16. Rijeka InTech. 

It is now widely assumed that the nanocomposite approach is the most promising in developing electrode materials for practical purposes. The validity of this assumption and of the nanocomposite concept is supported by two convincing examples. One is given by the tin-carbon (Sn-C) composite, whose morphology is shown by the TEM pictures reported in Figure 3.16 [15]. The... 

Scheme 1. The concept of polyfunctionality of a nanocomposite obtained from a nanostructured metal (0) and a cross-linked functional polymer.

There are four main concepts involved in the synthesis and processing of nanocomposites exfoliation, orientation, compatibility and re-aggregation. 

Highly structured, 3-D nanoparticle-polymer nanocomposites possess unique magnetic, electronic, and optical properties that differ from individual entities, providing new systems for the creation of nanodevices and biosensors (Murray et al. 2000 Shipway et al. 2000). The choice of assembly interactions is a key issue in order to obtain complete control over the thermodynamics of the assembled system. The introduction of reversible hydrogen bonding and flexible linear polymers into the bricks and mortar concept gave rise to system formation in near-equilibrium conditions, providing well-defined stmctures. 

The formation of polymer-filler nanocomposite affects the thermal behavior of the matrix because the well-dispersed nanofillers lead to modification of the degradation pathways [165-168]. This concept was first introduced by researchers from Toyota [169] who discovered the possibility to build nanocomposites from nylon-6... 

Niihara, K. New design concept of structural ceramics - ceramic nanocomposites , J. Ceram. Soc. Japan 99 (1991) 974—982. 

In this chapter, we have discussed recent developments of intumescent flame-retarded materials in terms of reaction and resistance to fire. Research work in intumescence is very active. New molecules (commercial molecules and new concepts) have appeared. Nanocomposites are a relatively new technology in the held of flame retardancy. This technology gives the best results combined with conventional FRs and leads to synergistic effects with intumescent systems. Very promising developments in the synergy aspects are then expected and efforts should be continued in this way. 

Marosi, G., Keszei, S., Matko, S., and Bertalan, G. 2006. Effect of interfaces in metal hydroxide-type and intumescent flame retarded nanocomposites. In Fire and Polymers TV Materials and Concepts for Hazard Prevention, Vol. 922, eds. Wilkie, C. and Nelson, G. Washington, DC ACS, pp. 117-30. 

Morgan, A.B., Whaley, P.D., Lin, T.S., and Cogen, J.M., The effects of inorganic-organic cations on EVA-magadiite nanocomposite flammability in ACS Symposium Series 922, Fire and Polymers IV -Materials and Concepts for Hazard Prevention, Wilkie, C.A. and Nelson, G., (Eds.), American Chemical Society, Washington D.C., 2006, Chapter 5, 48-60. 

Jeong, Byeong-Heon, Eric M.V. Hoek, Yushan Yan, Arun Subramani, Xiaofei Huang, Gil Hurwitz, Asim K. Ghosh, and Anna Jawor, "Interfacial Polymerization of Thin Film Nanocomposites A New Concept for Reverse Osmosis Membranes," Journal of Membrane Science, 294,2007. 

K. Nihara, New Design Concept of Structural Ceramics—Ceramic Nanocomposites, The Centen. Memor. Iss. of the Ceram. Soc. Japan, 99[10], 974 (1991). 

In 1992, researchers of the Mobil Oil Company introduced a new concept in the synthesis of mesoporous materials. They used supramolecular arrays of surfactant molecules as templating agents in order to obtain mesostructured silicates or alumosilicates which retain after calcination an ordered arrangement of pores with diameters between 2 and 10 nm and a narrow pore size distribution comparable to that of zeolites. These materials called M41S phases give access to the regime of the mesopores which is very interesting for different kinds of new size selective applications, e.g., molecular sieves, catalysis and nanocomposites [1]. 

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