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Dynamic melt viscosities of neat nylon 6 (■) and modified nylon 6 (approximate ratio between amine and epoxy groups: (●) 1:0.2, (▰) 1:0.4, (▼) 1:0.6, (⧫) 1:1, (◪) 1:1.25, (Black Lower Right Triangle) 1:2, and (Black Lower Left Triangle) 1:2.25 measured at 250 °C).
