Abstract
Preparation methods and thermal preconditions of formation of the β-modification of isotactic polypropylene (β-IPP) are rewieved. The existence of theoretical upper and lower limit temperature (T(βα) and T(αβ) respectively) of β-IPP formation is demonstrated. Essential characteristics of crystallization, melting and recrystallization of β-IPP are also summarized. In this respect, the attention is called to some new and peculiar phenomena, including the βα- and αβ-bifurcation of growth on the growing crystal fronts as well as the melting and annealing memory effects. Filled systems (composites) and polymer blends based on β-IPP are also covered. An interpretation to polymorphism of IPP is attempted on the basis of enantiotropy.
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Varga, J. (1993). β-Modification of Polypropylene and Its Two-Component Systems. In: Dosière, M. (eds) Crystallization of Polymers. NATO ASI Series, vol 405. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1950-4_63
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DOI: https://doi.org/10.1007/978-94-011-1950-4_63
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