@article{shankar_klossner_weaver_koga_zanten_krause_colina_tanaka_spontak_2009, title={Competitive hydrogen-bonding in polymer solutions with mixed solvents}, volume={5}, ISSN={["1744-683X"]}, DOI={10.1039/b808479c}, abstractNote={Poly(ethylene oxide) (PEO) coil size is investigated in a binary mixture of solvent molecules capable of cooperatively hydrogen-bonding with each other, as well as with the PEO chains. Viscometry reveals a minimum in zero shear rate solution viscosity at a molar ratio of ∼2:1 water:methanol. This viscosity coincides with a minimum in PEO gyration radius and occurs near the conditions where water/methanol mixtures deviate most markedly from ideal solution behavior. A minimum in polymer mean square end-to-end distance is predicted for polymer solutions composed of two hydrogen-bonding solvents.}, number={2}, journal={SOFT MATTER}, author={Shankar, Ravi and Klossner, Rebecca R. and Weaver, Juan T. and Koga, Tsuyoshi and Zanten, John H. and Krause, Wendy E. and Colina, Coray M. and Tanaka, Fumihiko and Spontak, Richard J.}, year={2009}, pages={304–307} }