Influence of β‐nucleation on polymorphism and properties in random copolymers and terpolymers of propylene |
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| Authors: | Rosario Benavente Susana Caveda Ernesto Pérez Enrique Blazquez Begoña Peña Rafael van Grieken Inmaculada Suárez |
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| Affiliation: | 1. Instituto de Ciencia y Tecnología de Polímeros, ICTP‐CSIC, Juan de la Cierva 3, 28006‐Madrid, Spain;2. CTR Repsol, Móstoles, 28935‐Madrid, Spain;3. Escuela Superior de Ciencias Experimentales y Tecnología, Universidad Rey Juan Carlos, 28933 Móstoles‐Madrid, Spain |
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| Abstract: | The competition between α, β, and γ polymorphs has been studied in several random copolymers and terpolymers of propylene, by performing X‐ray diffraction and differential scanning calorimetry experiments. Formation of β‐crystals, achieved by the addition of a β‐nucleating agent, was found to be highly dependent on comonomer type and crystallization conditions. Additionally, the mechanical properties have been evaluated from stress‐strain, microhardness and dynamic‐mechanical thermal analyses. POLYM. ENG. SCI., 2012. © 2012 Society of Plastics Engineers |
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