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Journal of Polymer Research

, 25:216 | Cite as

Morphology rearrangement of PEO and PG blocks of amphiphilic copolymer particles in solution affected by FeCl3/acidified water addition

  • Emi Haladjova
  • Pavletta Shestakova
  • Christo B. Tsvetanov
  • Christo P. Novakov
ORIGINAL PAPER
  • 37 Downloads

Abstract

The present contribution describes the preparation of nanosized aggregates by dissolving diblock copolymers consisting of hydrophobic polystyrene (PS) with randomly distributed short diene (D) moieties and hydrophilic polyether (polyethylene oxide (PEO) or polyglycidol (PG)) blocks in selective solvents. Inducing structural and/or size changes of the aggregates by addition of FeCl3/acidified H2O to the system is experimented. Dynamic light scattering (DLS) and size exclusion chromatography (SEC) measurements reveal resizing of the particles whilst adding FeCl3/acidified H2O. Further the structure and size of P(SD-EO/G) block copolymer corе-shell particles are determined by Diffusion Ordered NMR Spectroscopy (DOSY) which indicates a partial reversal of the core-shell structure upon the addition of FeCl3/acidified H2O. Transmission electron microscopy provides a more detailed insight on the morphology, shape and size distribution of the aggregates. For comparison, the change in the particle size under identical conditions for species of preliminary stabilized core-shell morphology is monitored as well.

Keywords

Amphiphilic block copolymers Hydrophilic poly(ethylene oxide)/polyglycidol block Acidifying addition Morphology rearrangement 

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Copyright information

© Springer Nature B.V. 2018

Authors and Affiliations

  • Emi Haladjova
    • 1
  • Pavletta Shestakova
    • 2
  • Christo B. Tsvetanov
    • 1
  • Christo P. Novakov
    • 1
  1. 1.Institute of PolymersBulgarian Academy of SciencesSofiaBulgaria
  2. 2.Institute of Organic Chemistry with Centre of PhytochemistryBulgarian Academy of SciencesSofiaBulgaria

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