Effects of SEBS-g-MA copolymer on non-isothermal crystallization kinetics of polypropylene |
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Authors: | Rishi Sharma Saurindra Nath Maiti |
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Affiliation: | 1. Centre for Polymer Science and Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
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Abstract: | The non-isothermal crystallization kinetics of pure PP and PP/SEBS-g-MA blends up to volume fraction, Φ d (0–0.50) was studied by differential scanning calorimetry at four different cooling rates. Crystallization parameters were analyzed by Ozawa and Liu models. The Ozawa model fits in the PP/SEBS-g-MA blends and indicates the effect of SEBS-g-MA copolymer on the crystallization process of polypropylene. Augis–Bennet model has been used to calculate activation energy, ?E, during non-isothermal crystallization process. The value of ?E decreased with SEBS-g-MA due to flexibility of SEBS-g-MA by which movements of chains of PP become easier. |
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