This review article is a comprehensive study of different approaches utilized by various researchers for UV-cure epoxy composites through the cationic route in the form of transparent or colored composites either in thin films or thick dimensions. Generally UV curing is applied on thin and transparent materials, yet attempts are being made to cure intensely colored and thick composite samples. In recent times, thick sample UV-curing has been actively explored to decrease the processing and fabrication expenses of complex assemblies. In this article, data has been reviewed about epoxy curing with methodological trends, not only in thin films but also in thick samples.

Carbon Nanotubes (CNT) are important fillers and reinforcing agents, frequently used in polymeric composites. CNT agglomerate and entangle with each other due to the presence of strong van der Waal forces between them. This agglomeration not only results in decreased product quality but also in lower conductance of composite than expected. Deagglomeration of CNT bundles is necessary for a better dispersion either through chemical functionalization (covalent or non-covalent) or by mechanical methods (stirring, calendering and ultrasonication). This review contains different methods for chemical surface modification of CNT, which not only decrease CNT-matrix interface resistance by providing a soft interface between filler and matrix but also increases CNT dispersion in different types of matrices.