Hybrid materials based composites

Inorganic Hybrid Materials Based on Mesoporous Silica Composites for Humidity Sensing Applications... 

Several techniques can be used to produce composite or hybrid materials based on the hydrophobic-hydrophilic mixtures with water or other liquids (de Gennes et al. 2004, Eshtiaghi et al. 2009, Boissiere et al. 2011). For instance, a mixture of hydrophilic nanosilica A-300 and hydrophobic nanosilica R812 was dispersed in a Schiff-base-type liquid crystal (LC), / -ethoxy(ben zylidene)-p-n-butylaniline, and analyzed using deuterium NMR spectroscopy (Milette et al. 2008)... 

Recentiy, a new class of organic-inorganic hybrid materials based on the ultra incorporation of nano-sized fillers (nanofillers) into a polymer matrix has been investigated. Nanotechnology is the aptitude to work on a scale of about 1-100 nm in order to understand, create, characterize and use material structure, devices, and system with unique properties derived from their base on the nanostructures. Nanocomposites could exhibit exclusive modifications in their properties, compared with conventional composites in terms of physical properties, including gas barrier, flammability resistance, thermal and environmental stability, solvent uptake, and rate of biodegradability of biodegradable (Chivrac et al. 2009). 

He, T., Yao, J. (2006). Photochromism in composite and hybrid materials based on transition-metal oxides and polyoxometalates. Progress in Materials Science, 51, 810-879. http //dx.doi.Org/10.1016/j.pmatsci.2005.12.001. 

For more efficient utilization of MOFs sorbents, several hybrid systems based on MOFs with other solid sorbents have been investigated in the literature. The objective of having hybrid materials is to utilize the synergism between the two sorbents and therefore ultimately improve the overall performance in C02 separation. Moreover, sorbents such as activated carbons, graphenes, and CNTs provide the added feature of high surface area and easily functionalized sites which contribute to the tuning of the final properties of the composite... 

This chapter presents an overview of these composites with a variety of material combinations, as well as their architectures. The major objectives of this chapter are the following (a) to briefly discuss the history and main concepts of FMs in section 1.2 (b) to address the experimental ways to prepare these composites, including coextrusion, microfabrication by coextrusion, and hybrid extrusion and dip-coating, in section 1.3 (c) to demonstrate the various types of FMs in the form of oxide-based or nonoxide-based composites, as well as their various architectures in section 1.4 ... 

The hybrid materials having silica content below 50 wt% were composed of polyimide matrix with finely dispersed silica particles, and their hardness values were very close to that of the matrix polyimide. On the other hand, the hybrid materials having a silica content over 50 wt% were very hard and tough, and their hardness values increased with increasing silica content. In the latter hybrid materials, the silica formed a continuous phase with polyimide as the minor phase that probably acts as binder. This is a new type of polyimide-based composite, and may be referred to as polyimide-reinforced silica glass , al-... 

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