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Synthesis and Self-association Behavior of Poly[bis(2-(2-methoxyethoxy)ethoxy)phosphazene]-b-poly(propyleneglycol) Triblock Copolymers by Youngkyu Chang; Song Yun Cho; Lee B. Steely; Harry R. Allcock is a Materials Science article available to read on EtoBox.

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## Abstract Amphilic triblock copolymers with varying ratios of hydrophilic poly[bis (methoxyethoxyethoxy)phosphazene] (MEEP) and relatively hydrophobic poly(propylene glycol) (PPG) blocks were synthesized via the controlled cationic‐induced living polymerization of a phosphoranimine (Cl~3~PNSiMe~3~) at ambient temperature. A PPG block can function as either a classical hydrophobic block or a less hydrophobic component by varying the nature of a phosphazene block. The aqueous phase behavior of MEEP‐PPG‐MEEP block copolymers was investigated using fluorescence techniques, TEM, and dynamic light scattering (DLS). The critical micelle concentrations (cmcs) of MEEP‐PPG‐MEEP block copolymers were determined to be in the range of 3.7–16.8 mg/L. The mean diameters of MEEP‐PPG‐MEEP polymeric micelles, measured by DLS, were between 31 and 44 nm. The equilibrium constants of pyrene in these micelles ranged from 4.7 × 10^4^ to 9.6 × 10^4^. © 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 692–699, 2009

Who reads Synthesis and Self-association Behavior of Poly[bis(2-(2-methoxyethoxy)ethoxy)phosphazene]-b-poly(propyleneglycol) Triblock Copolymers?

Author

Youngkyu Chang; Song Yun Cho; Lee B. Steely; Harry R. Allcock

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0887-624X)

Published

2008

Language

EN

Field

Materials Science (Physical Sciences)