Due to escalating power densities in electronics, information, communication, energy storage, aerospace, and automobile technologies, heat dissipation has become immensely essential for the efficient performance and reliability of photonic, electronics, optoelectronics, and other devices in order to proactively prevent premature failure due to overheating. The functionalization and synergistic inclusion of thermally conducting nanoparticles such as carbon derivatives and metallic and ceramic fillers into polymer matrices have resulted in development of thermally conducting polymer nanocomposites. This has enlarged the scope of application of these materials in areas hitherto restricted due to poor thermal conductivity and, therefore, opened broad windows of opportunities for polymer nanocomposites as emerging alternative replacements for metal components in various applications where effective heat dissipation is compulsory for device performance. Thus, this paper critically discusses globally emerging technologies applied in the development of thermally conductive polymer nanocomposites for various industrial applications.

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Nowadays, there exists a global challenge confronting efficient management of municipal solid wastes. Varying degrees of environmental challenges including regular release of greenhouse gases and scarcity of available space for waste disposal have been caused by escalating accumulation of these wastes' materials resulting in inappropriate waste management. These challenges have aroused alarming public concerns, resulting in political legislation aimed at minimizing the amount of wastes getting into the environment. These activities attempt to offer solution which will enhance sustainable waste management, while promoting MSW recycling, and efficient conversion of waste materials to energy, and other valuable chemicals. These conversion procedures can be achieved through use of either biological processes such as anaerobic digestion or thermochemical procedures such as pyrolysis. Thus, the current review elucidates novel routes effectively utilized in converting MSW to energy and other valuable chemicals. Graphic abstract

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Recent sustainable advancement in carbon nanotechnology has further broadened the scope of application of carbon based materials, especially graphene based polymer nanocomposites, in emerging applications. This paper mainly focuses on recently emerging trends in synthesis and properties of graphene based polymer nanocomposites, in addition to brief discussion of some selected carbon based nanocomposites for application in electromagnetic interference shielding efficiency, terahertz shielding efficiency, electrostatic dissipation, thermal interface materials, sensors, and energy storage. Finally, an overview of recently emerging trends in sustainability, economies of scale, and emerging commercial market share of these materials is also presented.