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Generation of nanocomposites based on polystyrene-grafted CdSe nanoparticles by grafting through and block copolymer

Abstract

Continuing with our previous work, in which CdSe nanoparticles were functionalized with polystyrene (PS) brushes (CdSe-PS) by the grafting through method, nanocomposites were prepared by adding them to a poly(styrene-b-butadiene-b-styrene) (SBS) triblock copolymer. After characterizing CdSe-PS nanoparticles obtained at different polymerization times of 3, 5, and 8 h by means of thermogravimetric analysis and gel permeation chromatography, CdSe-PS nanoparticles obtained after 5 h of polymerization (CdSe-PS(5h)) were chosen as the most adequate for the generation of nanocomposites. Atomic force microscopy (AFM) was used for morphological characterization of SBS/CdSe-PS(5h) nanocomposites. AFM images showed a good dispersion of the nanoparticles in the block copolymer, with the placement of the nanoparticles in the PS domains due to the improved affinity obtained by their functionalization with PS brushes.

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Acknowledgments

Financial support from the Basque Country Government (NanoIker IE11-304, SAIOTEK2012-S-PE12UN106) and Grupos Consolidados (IT-776-13) and from the Ministry of Education and Innovation (MAT 2009–06331 and MAT2012-31675) is gratefully acknowledged. H. Etxeberria thanks University of Basque Country (UPV/EHU) for the grant “Ayudas para la Contratación de Doctores Recientes hasta su Integración en Programas de Formación Postdoctoral”. Technical and human support provided by SGIker (UPV/EHU, MICINN, GV/EJ, ERDF, and ESF) is also acknowledged. In memoriam, this study is dedicated to Dr. Iñaki Mondragon Egaña.

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Correspondence to Galder Kortaberria.

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Etxeberria, H., Zalakain, I., Mondragon, I. et al. Generation of nanocomposites based on polystyrene-grafted CdSe nanoparticles by grafting through and block copolymer. Colloid Polym Sci 291, 1881–1886 (2013). https://doi.org/10.1007/s00396-013-2927-8

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Keywords

  • Grafting through
  • CdSe nanoparticles
  • Block copolymer
  • Nanocomposite