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Thermal characterization of lamellar titanes

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Summary

Sugar cane bagasse lignin (SCBL) was extracted with formic acid (FA) from a sugar and alcohol factory residue, and used for blends preparation with polyvinylpyrrolidone (PVP). Casting from DMSO and FA solutions were used as preparation procedure. PVP and PVP/SCBL blends were also irradiated with ultraviolet light (Hg lamp). Blend formation and irradiation effects were examined through thermogravimetric analysis (TG) and infrared spectroscopy (FTIR). Results suggest a greater interaction between PVP and SCBL chains in PVP/SCBL 95/5 cast from DMSO and in the 95/5 and 90/10 blends cast from FA. Pure PVP shows a thermal stability decrease due to irradiation and this effect is minimized in the PVP/SCBL blends. The initial stage of the thermal decomposition of PVP is anticipated by the SCBL incorporation.

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Authors and Affiliations

  1. Departamento de Química, CCEN, Universidade Federal da Paraíba, Campus I, 58059-900, Joăo Pessoa, PB, Brazil

    V. A. Cardoso

  2. Departamento de Química, CCEN, Universidade Federal da Paraíba, Campus I, 58059-900, Joăo Pessoa, PB, Brazil

    L. M. Nunes

  3. Departamento de Química, CCT, Universidade Estadual da Paraíba, Campus I, Bodocongó, 58109-790, Campina Grande, PB, Brazil

    J. C. O. Santos

  4. Departamento de Química, CCEN, Universidade Federal da Paraíba, Campus I, 58059-900, Joăo Pessoa, PB, Brazil

    I. M. G. Santos

  5. Departamento de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, 59072-970, Natal, RN, Brazil

    M. M. Conceiçăo

  6. Departamento de Química, Universidade Federal do Piauí, Teresina, PI, Brazil

    J. R. Santos Jr.

  7. Departamento de Química, CCEN, Universidade Federal da Paraíba, Campus I, 58059-900, Joăo Pessoa, PB, Brazil

    A. G. Souza

Authors
  1. V. A. Cardoso
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  2. L. M. Nunes
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  3. J. C. O. Santos
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  4. I. M. G. Santos
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  5. M. M. Conceiçăo
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  6. J. R. Santos Jr.
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  7. A. G. Souza
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Cardoso, V., Nunes, L., Santos, J. et al. Thermal characterization of lamellar titanes. J Therm Anal Calorim 79, 361–365 (2005). https://doi.org/10.1007/s10973-005-0065-3

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  • DOI: https://doi.org/10.1007/s10973-005-0065-3

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