Study of the melting latent heat of semi crystalline PVDF applied to high gamma dose dosimetry

4^th International Conference and Exhibition on Materials Science & Engineering

September 14-16, 2015 Orlando, USA

Adriana S M Batista1, Maritza R Gual2, Cl�¡ubia P B Lima1 and Luiz O Faria2

1Universidade Federal de Minas Gerais, Brazil 2Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Brazil

Posters-Accepted Abstracts: J Material Sci Eng

Abstract :

Poly(vinylidene fluoride) homopolymers [PVDF] homopolymers were irradiated with gamma doses ranging from 0.5 to 2.75 MGy. Differential scanning calorimetry (DSC) and FTIR spectrometry were used in order to study the effects of gamma radiation in the amorphous and crystalline polymer structures. The FTIR data revealed absorption bands at 1730 and 1853 cm-1 which were attributed to the stretch of C=O bonds, at 1715 and 1754 cm-1 which were attributed to the C=C stretching and at 3518, 3585 and 3673 cm-1 which were associated with NH stretch of NH2 and OH. The melting latent heat (LM) measured by DSC was used to construct an unambiguous relationship with the delivered dose. Regression analyses revealed that the best mathematical function that fits the experimental calibration curve is a 4-degree polynomial function, with an adjusted R-square of 0.99817.

Biography :

Email: adriananuclear@yahoo.com.br