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Studies on the thermal stability and film irradiation effect of poly(vinylalcohol)/kraft lignin blends

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Summary

Samples of commercial alkyd resin varnish were spread in a film form on slides, dried at room temperature and exposed to solar radiation from one day up to seven months. Thermogravimetric measurements have been done. Based on the TG data, the Flynn-Wall isoconversional method was applied. The activation energy varied between 176-154 kJ mol<Superscript>-1</Superscript> and log<Emphasis Type=”Italic”>A</Emphasis> was between 15.5-12.9 min<Superscript>-1</Superscript> for A, B and C samples at 95&percnt; confidence level.

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Authors and Affiliations

  1. Dpto. de Qu&#237;mica, Universidade Estadual de Maring&#225;, 87020-900 Maring&#225; PR, Brazil

    P. R. S. Bittencourt

  2. Dpto. de Qu&#237;mica, Universidade Estadual de Maring&#225;, 87020-900 Maring&#225; PR, Brazil

    G. L. dos Santos

  3. Dpto. de Qu&#237;mica, Universidade Estadual de Maring&#225;, 87020-900 Maring&#225; PR, Brazil

    E. A. G&#243;mez Pineda

  4. Dpto. de Qu&#237;mica, Universidade Estadual de Maring&#225;, 87020-900 Maring&#225; PR, Brazil

    A. A. Winkler Hechenleitner

Authors
  1. P. R. S. Bittencourt
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  2. G. L. dos Santos
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  3. E. A. G&#243;mez Pineda
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  4. A. A. Winkler Hechenleitner
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Bittencourt, P., dos Santos, G., G&#243;mez Pineda, E. et al. Studies on the thermal stability and film irradiation effect of poly(vinylalcohol)/kraft lignin blends. J Therm Anal Calorim 79, 371–374 (2005). https://doi.org/10.1007/s10973-005-0067-1

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  • DOI: https://doi.org/10.1007/s10973-005-0067-1

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