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Melting behavior of lamellae of isotactic polypropylene studied using hot-stage atomic force microscopy

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Abstract

The α- and β-form lamellae of isotactic polypropylene were developed at different temperatures. The melting behaviors of the lamellae were observed in real time at elevated temperatures using a hot-stage atomic force microscopy. The melting behavior of the α-form lamellae was determined by the lamellar defects. For the α-form lamellae developed at different undercoolings, the larger the undercoolings, the relatively higher amount of defect in the lamellae was observed. The lamellae with defects were melted into lamellar segments, and recrystallization took place during the heating process. The β-form lamellae had lower thermal stability, and they melted firstly and separately from that of α-form.

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Acknowledgments

This work is supported by the Outstanding Youth Fund and the National Science Foundation of China (grant nos. 20325414, 20574083, and 50521302). We also thank Professor Jerold M. Schultz for his constructive comments.

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Correspondence to Jianjun Zhou.

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Wang, X., Hou, W., Zhou, J. et al. Melting behavior of lamellae of isotactic polypropylene studied using hot-stage atomic force microscopy. Colloid Polym Sci 285, 449–455 (2007). https://doi.org/10.1007/s00396-006-1586-4

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  • DOI: https://doi.org/10.1007/s00396-006-1586-4

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