Solution mixing nanocomposites synthesis

Figure 2.2. Schematic of synthesis of CNT polycarbonate nanocomposites by solution mixing approach. Reproduced from reference 19 with permission from American Chemical Society.

Manchado et al. [127] described the synthesis of layered sUicate/natural rubber nanocomposites by mechanical and solution mixing. It was found that the filler and the polymer show good compatibility by solution blending. Addition of a coupling agent, namely bis(triethoxysilylpropyl)tetrasulfane (TESPT), could improve the adhesion between the filler and elastomer. 

Polyimide-clay nanocomposites constitute another example of the synthesis of nanocomposite from polymer solution [70-76]. Polyimide-clay nanocomposite films were produced via polymerization of 4,4 -diaminodiphenyl ether and pyromellitic dianhydride in dimethylacetamide (DMAC) solvent, followed by mixing of the poly(amic acid) solution with organoclay dispersed in DMAC. Synthetic mica and MMT produced primarily exfoliated nanocomposites, while saponite and hectorite led to only monolayer intercalation in the clay galleries [71]. Dramatic improvements in barrier properties, thermal stability, and modulus were observed for these nanocomposites. Polyimide-clay nanocomposites containing only a small fraction of clay exhibited a several-fold reduction in the... 

More recently. Ye et al. proposed a new sol—gel method combined with a supercritical drying technique for the synthesis of nanocomposite electrocatalysts for ORR. They claimed that their method had a structure-preserving ability and favored a nanoscale mixing of the constituents, and then could produce a remarkably homogeneous solution. The chemical, physical, and morphological properties of catalysts produced using this sol—gel... 

The possibility of obtaining new materials with improved properties by mixing two or more polymers represents an advantageous economical and technical solution more appropriate than the design and synthesis of new polymers. In recent decades, theoretical and experimental scientific research has been directed towards the development of new classes of polymers, especially for biomaterial applications. Polymers and nanocomposites appear as classes of biomaterials with a special applicative potential capable... 

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