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- W2322372959 endingPage "4890" @default.
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- W2322372959 abstract "Vesicle response to osmotic shock provides insight into membrane permeability, a highly relevant value for applications ranging from nanoreactor experimentation to drug delivery. The osmotic shock approach has been employed extensively to elucidate the properties of phospholipid vesicles (liposomes) and of varieties of polymer vesicles (polymersomes). This study seeks to compare the membrane response for two varieties of polymersomes, a comb-type siloxane surfactant, poly(dimethylsiloxane)-g-poly(ethylene oxide) (PDMS-g-PEO), and a diblock copolymer, polybutadiene-b-poly(ethylene oxide) (PBut-b-PEO). Despite similar molecular weights and the same hydrophilic block (PEO), the two copolymers possess different hydrophobic blocks (PBut and PDMS) and corresponding glass transition temperatures (−31 and −123 °C, respectively). Dramatic variations in membrane response are observed during exposure to osmotic pressure differences, and values for polymer membrane permeability to water are extracted. We propose an explanation for the observed phenomena based on the respective properties of the PBut-b-PEO and PDMS-g-PEO membranes in terms of cohesion, thickness, and fluidity." @default.
- W2322372959 created "2016-06-24" @default.
- W2322372959 creator A5015280878 @default.
- W2322372959 creator A5034910440 @default.
- W2322372959 creator A5061442672 @default.
- W2322372959 creator A5089947211 @default.
- W2322372959 date "2011-03-15" @default.
- W2322372959 modified "2023-09-26" @default.
- W2322372959 title "Block Copolymer Vesicle Permeability Measured by Osmotic Swelling and Shrinking" @default.
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- W2322372959 doi "https://doi.org/10.1021/la105045m" @default.
- W2322372959 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/21405067" @default.
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