ductility

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The ductile-brittle transition temperature (DBTT) of nylon 11 blends with an MAN graft ratio over 0.
Below this temperature, known as the ductile-brittle transition temperature (DBTT), the material breaks in a brittle (usually low impact energy) manner; above this temperature, the material breaks in a ductile (usually high impact energy) fashion.
With these blends, the impact strength was not markedly affected by the presence of a weld line, above or below the ductile-brittle transition temperature of PP.