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Crystallization and melting behavior of PP/nano-CaCO3 composites with different interfacial interaction

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Abstract

The effect of different interfacial interaction on the crystallization and melting behavior of PP/nano-CaCO3 composites was investigated using differential scanning calorimetry, X-ray diffraction and polarized optical microscope. The results indicated that nano-CaCO3 acted as heterogeneous nuclei for PP crystallization. There existed a synergistic effect of heterogeneous nucleation between nano-CaCO3 and compatibilizer for PP crystallization, which was proved by increasing the crystallization rate and decreasing the fold surface free energy as well as favoring the formation of β-crystal of PP. However, this synergistic effect was dependent on the interfacial interaction between PP and compatibilizer. The increased miscibility between compatibilizer and PP favored this synergistic effect.

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Acknowledgements

The project was supported by Natural Science Foundation of China (Grant No. 50873115), Doctoral Fund of Ministry of Education of China and Project of Science and Technology of Guangdong Province, China (Grant No. 0711020600002).

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Authors and Affiliations

  1. Key Laboratory of Polymeric Composites and Functional Materials, the Ministry of Education, Materials Science Institute, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, People’s Republic of China

    Yuhai Wang, Hao Shen, Gu Li & Kancheng Mai

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  1. Yuhai Wang
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  2. Hao Shen
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  3. Gu Li
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  4. Kancheng Mai
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Correspondence to Kancheng Mai.

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Wang, Y., Shen, H., Li, G. et al. Crystallization and melting behavior of PP/nano-CaCO3 composites with different interfacial interaction. J Therm Anal Calorim 99, 399–407 (2010). https://doi.org/10.1007/s10973-009-0130-4

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  • DOI: https://doi.org/10.1007/s10973-009-0130-4

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