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Evidences of the crystalline memory and recrystallisation capacity of bisphenol-A polycarbonate

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Abstract

Bisphenol-A polycarbonate (BAPC) was crystallised by exposure to acetone vapours for a period of 9 h; it developed a 20% crystallinity according to WAXS measurements. The samples of semi-crystalline BAPC were then submitted to a series of thermal treatments including annealing, self-nucleation and subsequent isothermal crystallizations. The results showed that the polymer possesses a remarkable crystalline memory and a much faster recrystallization and reorganization capacity (lamellar thickening) than its very low thermal crystallization rate. This peculiar crystallization behaviour probably stems from its rigid backbone molecular structure.

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Authors and Affiliations

  1. Grupo de Polímeros USB, Departamento de Ciencia de los Materiales, Univesidad Simón Bolívar, Apartado 89000, 1080-A, Caracas, Venezuela

    G. Mendez & A. J. Müller

Authors
  1. G. Mendez
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  2. A. J. Müller
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Additional information

We acknowledge the financial support of the ‘Consejo Venezolano de Investigaciones Científicas y Tecnológicas’ (CONICIT) through Grant NM-43 (Proyecto Nuevas Tecnologías-BID). We would also like to acknowledge fruitful discussions with E. Laredo and M. Grimau.

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Mendez, G., Müller, A.J. Evidences of the crystalline memory and recrystallisation capacity of bisphenol-A polycarbonate. Journal of Thermal Analysis 50, 593–602 (1997). https://doi.org/10.1007/BF01979031

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  • DOI: https://doi.org/10.1007/BF01979031

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