The Influence of Copolymerization Condition on Rheology, Morphology and Thermal Behavior of Polypropylene Heterophasic Copolymers

Effect of the matrix modification technique (MMT) on the composition, microstructure, morphology, interfacial interaction and mechanical properties of polypropylene reactor alloys

“…Numerous attempts have been made to produce various grades of polypropylene reactor alloys due to their enhanced properties and the possibility of balancing between stiffness and toughness. 4,10,11 The mechanical properties of PP reactor alloys can be improved either chemically, by modifying the catalyst, 12 cocatalyst 13 and external electron donors, 14 or by changing physical parameters [15][16][17] such as temperature, pressure and the monomer feed ratio. The rubber phase content and its interfacial interactions with the iPP matrix are two main concerns of the impact properties of heterophasic block copolymers.…”