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Associative and segregative phase separations of poly(N-tert-butylacrylamide)/poly(acrylic acid) mixtures. Effect of solvent

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Abstract

Poly(N-tert-butylacrylamide) (PNtBAm) and poly(acrylic acid) (PAA) form interpolymer complexes in 1- and 2-propanol, blend in ethanol, whereas a segregative phase separation is observed when using methanol as solvent as shown by Fourier transform infrared (FTIR) spectrometry and elemental analysis studies. The composition of PNtBAm/PAA complexes has been determined. Thermal studies demonstrated that all complexes show unique glass transition temperatures, higher than those of the polymer components. Complexation of PAA with PNtBAm results in an improvement of its thermal stability. Solvent effects and specific interactions in the system PNtBAm/PAA have been studied by FTIR, revealing that differences in the polymer–solvent interactions are a decisive factor governing complex formation in solution.

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Acknowledgements

Financial support provided by the Gobierno Vasco (Actimat, Etortek project) is gratefully acknowledged.

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Authors and Affiliations

  1. Laboratorio de Química Macromolecular (Labquimac), Universidad del País Vasco (UPV/EHU), Barrio Sarriena s/n, 48940, Leioa, Spain

    M. Teresa Garay, Leire Ruiz, J. Manuel Laza, Matilde Rodriguez & Luis M. León

  2. Centro Tecnológico Gaiker, Zamudio, Bizkaia, Spain

    J. Ramón Marín

Authors
  1. M. Teresa Garay
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  2. Leire Ruiz
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  3. J. Ramón Marín
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  4. J. Manuel Laza
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  5. Matilde Rodriguez
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  6. Luis M. León
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Correspondence to M. Teresa Garay.

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Garay, M.T., Ruiz, L., Marín, J.R. et al. Associative and segregative phase separations of poly(N-tert-butylacrylamide)/poly(acrylic acid) mixtures. Effect of solvent. Colloid Polym Sci 288, 1593–1599 (2010). https://doi.org/10.1007/s00396-010-2301-z

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  • DOI: https://doi.org/10.1007/s00396-010-2301-z

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