Molecular Weight Dependence of Polymersome Membrane Structure , Elasticity , and Stability

  title={Molecular Weight Dependence of Polymersome Membrane Structure , Elasticity , and Stability},
  author={Harry Bermudez and Aaron K. Brannan and Daniel A. Hammer and Frank S Bates and Dennis E Discher},
Vesicles prepared in water from a series of diblock copolymers “polymersomes” are physically characterized and compared to lipid vesicles. With increasing molecular weight M̄n, the hydrophobic core thickness d for the self-assembled bilayers of poly(ethylene oxide)-polybutadiene (PEO-PBD) increases up to ≃20 nm considerably greater than any previously studied lipid system. The mechanical responses of these membranes, specifically, the area elastic modulus Ka and maximal areal strain αc are… CONTINUE READING


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