Polymer-like to soft colloid-like behavior of regular star polymers adsorbed on surfaces

Emmanouil Glynos, Alexandros Chremos, George Petekidis, Philip J. Camp, Vasileios Koutsos

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

We investigated systematically the structure and growth of monolayers of physisorbed polybutadiene (PB) starlike polymers on freshly cleaved mica after solvent evaporation using atomic force microscopy (AFM). We observed a strong dependence of the evolution of the average island height and surface coverage with increasing surface density on the functionality (number of arms) of the star polymers. We explain these structural phenomena in terms of the molecular and conformational properties of the different star polymers. Our study provides real space observations of the star polymer surface structures near the overlap surface density for the first time. The structural regimes are strongly affected by the change of the star polymer behavior from polymer-like to colloid-like when the arm functionality increases.

Original languageEnglish
Pages (from-to)6947-6958
Number of pages12
JournalMacromolecules
Volume40
Issue number19
DOIs
Publication statusPublished - 18 Sept 2007

Keywords / Materials (for Non-textual outputs)

  • SCANNING FORCE MICROSCOPY
  • MOLECULAR-DYNAMICS SIMULATION
  • POLYELECTROLYTE MOLECULES
  • CONCENTRATION-DEPENDENCE
  • MORPHOLOGY
  • MONOLAYERS
  • PARTICLES
  • POLYBUTADIENES
  • CONFORMATION
  • TRANSITION

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