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From cylindrical to spherical nanosized micelles by self-assembly of poly(dimethylsiloxane)-b-poly(acrylic acid) diblock copolymers

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Abstract

PDMS-b-PAA block copolymers were synthesized in a two-step procedure. The first step involves atom transfer radical polymerization (ATRP) of the protected ethoxyethyl acrylate (EEA) monomer initiated with α-bromopoly(dimethylsiloxane) (PDMS) (\( \bar{M}_{\text{n}} \) = 10,000 g/mol) macroinitiator. In the second step the synthesized poly(dimethylsiloxane)-b-poly(ethoxyethyl acrylate) (PDMS-b-PEEA) was deprotected by thermal treatment. The aggregation properties of the copolymers were investigated by atomic force microscopy (AFM) and dynamic light scattering (DLS). The influence of the polymer concentration, the length of the PAA block, the (mixed) solvent composition, and annealing on the size and the shape of the aggregates was evaluated. The results show that the aggregate size and morphology can be successfully controlled by tuning the experimental conditions. These copolymers might possibly be used in the preparation of adhesive materials.

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Acknowledgments

The work is supported by the ARC BIOMIME project (ARC AUWB-2008-08/12-UMH15), the Science Policy Office of the Belgian Federal Government (PAI 7/05 FS2), and FNRS-FRFC. Ph.L. is a senior research associate of FRS-FNRS (Belgium).

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Author notes

  1. Radostina Kalinova

    Present address: Institute of Polymers, Bulgarian Academy of Science, Acad. G. Bonchev Str., Block 103-A, 1113, Sofia, Bulgaria

  2. T. Chinh Ngo

    Present address: Institute of Research and Development, Duy Tan University, K7/25 Quang Trung, Da Nang, Vietnam

Authors and Affiliations

  1. Laboratory of Polymeric and Composite Materials, Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons (UMONS), 20 Place du Parc, 7000, Mons, Belgium

    Radostina Kalinova, Rosica Mincheva & Philippe Dubois

  2. Laboratory for Chemistry of Novel Materials, Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons (UMONS), 20 Place du Parc, 7000, Mons, Belgium

    T. Chinh Ngo, Roberto Lazzaroni & Philippe Leclère

Authors
  1. Radostina Kalinova
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  2. T. Chinh Ngo
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  3. Rosica Mincheva
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  4. Roberto Lazzaroni
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  5. Philippe Leclère
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  6. Philippe Dubois
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Correspondence to Rosica Mincheva or Philippe Dubois.

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Kalinova, R., Ngo, T.C., Mincheva, R. et al. From cylindrical to spherical nanosized micelles by self-assembly of poly(dimethylsiloxane)-b-poly(acrylic acid) diblock copolymers. Polym. Bull. 73, 2129–2146 (2016). https://doi.org/10.1007/s00289-016-1598-2

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  • DOI: https://doi.org/10.1007/s00289-016-1598-2

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