SANS Study of Poly(ethylene glycol) Solutions in D2O

G. Lancza, M.V. Avdeevb, V.I. Petrenkob, c, V.M. Garamusd, M. Konerackáa and P. Kopčanskýa aInstitute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, Slovakia bFrank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Joliot-Curie 6, 141980 Dubna, Moscow region, Russia cPhysics Department, Taras Shevchenko Kyiv National University, Volodymyrska 64, 01601 Kyiv, Ukraine dGKSS Research Centre, Max-Planck-Str. 1, 21502 Geesthacht, Germany

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Poly(ethylene glycol) is used for coating of colloidal particles and other surfaces for gaining biocompatibility. Particularly, it can be introduced into magnetic fluids. The aim of the current study was to reveal the structural characteristics of poly(ethylene glycol) in neat D2O using small-angle neutron scattering technique. Solutions of poly(ethylene glycol) (at temperature of 37°C) with different molecular weights in an interval of 400-20000 were investigated. It is concluded that at low concentrations (less than 2% of mass fraction) poly(ethylene glycol) molecules behave as Gaussian coils.

DOI: 10.12693/APhysPolA.118.980 PACS numbers: 36.20.-r, 61.05.fg