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Comparative study of gamma-irradiated PP and PE polyolefins (part 2)
Polypropylene and polyethylene are among the most common polyolefins in the plastic worldwide production. Individually, they are used in a lot of diversified fields with applications owing to their particular mechanical properties and chemical inertness. Mixing them together offers many intermediate desirable properties even if they are not miscible that can be a limitation to the development of their blends.
Using gamma-irradiation during the process of immiscible polymer blends can be seen as an alternative in both polymers lightening and recycling. Indeed, the formation of reactive radical species favours the formation of bonds between both PE and PP phase in the blends. Thus the compatibility between PP and PE is improved without need of a ternary component. Such process might be considered as a universal way of reactive compatibilisation.
Comparative study of gamma-irradiated PP and PE polyolefins part 2: Properties of PP/PE blends obtained by reactive processing with radicals obtained by high shear or gamma-irradiation.
Elie Fel, Lhoussain Khrouz, Valérie Massardier, Phlippe Cassagnau, Laurent Bonneviot. Polymer 82 (2016) 217-227.