Journal
MACROMOLECULAR SYMPOSIA
Volume 335, Issue 1, Pages 20-23Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/masy.201200117
Keywords
interacting Gaussian coil; magnetic fluids; poly(ethylene glycol) (PEG) solutions; small-angle neutron scattering; virial coefficient
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Behavior of low molecular mass poly(ethylene glycol) (PEG) polymer, i.e. molar masses M-n - 400 and 1000, in heavy water is studied by small-angle neutron scattering (SANS). Some part of the polymer molecules in concentrated solutions is found to form aggregates with size exceeding 30 nm. The form-factor of Gaussian coil is used to describe low concentrated PEG solutions. Virial coefficients are obtained from approximation of experimental SANS data for PEG solutions with concentration higher than 3% where the interparticle interaction effect is well observed.
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