Abstract
Blending different polymers opens up a range of possibility for the development of novel materials with interesting properties. In most cases, however, the immiscibility of polymers results in the loss of mechanical properties due to their incompatibility. Therefore, an appropriate compatibilization of polymer blends is required to overcome this drawback. This chapter presents the compatibilization of polymer blends by means of reactive coupling agents, which can be considered as one of the most industrially viable solutions. Reactive coupling agents can be simply added into polymer blends during melt processing. Performant linkages between coupling agents and target polymers will be formed at elevated temperatures, leading to a high compatibilization effect. Although many coupling agents were intensively applied in the field of composite materials, this review summarizes only the applications of reactive coupling agents in binary and ternary polymer blends. In this study, coupling agents are presented according to the type of their reactive groups: silane, carbodiimide, isocyanate, bisoxazoline, biscaprolactam, epoxide, anhydride, as well as catalysts for interchange reactions. The mechanism and compatibilizing effect of coupling agents are discussed.
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