Synthesis and micellar behavior of amphiphilic polystyrene - Poly[bis(methoxyethoxyethoxy)phosphazene] block copolymers

Harry R. Allcock, Eric S. Powell, Youngkyu Chang, Chulhee Kim

Research output: Contribution to journalArticle

57 Scopus citations

Abstract

Amphiphilic diblock copolymers with varying compositions of hydrophilic poly[bis(methoxyethoxyethoxy)phosphazene] and Hydrophobic polystyrene were synthesized via the living, cationic polymerization of Cl 3P= NSiMe 3, using a polystyrenyl - phosphoranimine as a macroterminator. The self-association behavior of the block copolymers in aqueous media was investigated using fluorescence spectroscopy, transmission electron microscopy, and dynamic light scattering. The critical micelle concentrations of PS-MEEP block copolymers with molar block ratios of 1:0.37, 1:0.58, 1:0.70, and 1:0.86 were determined to be 1.8, 2.3, 10.0, and 13.6 mg/L, respectively. The mean diameters of micelles of these block copolymers were measured as 167, 168, 179, and 173 nm through dynamic light scattering. The equilibrium constants of pyrene in these micelles ranged from 5.75 × 10 5 to 7.31 × 10 4.

Original languageEnglish (US)
Pages (from-to)7163-7167
Number of pages5
JournalMacromolecules
Volume37
Issue number19
DOIs
StatePublished - Sep 21 2004

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Synthesis and micellar behavior of amphiphilic polystyrene - Poly[bis(methoxyethoxyethoxy)phosphazene] block copolymers'. Together they form a unique fingerprint.

  • Cite this