@article {,
title = {Small-angle neutron scattering from deuterated polystyrene in dioctyl phthalate solution under shear},
journal = {Macromolecules},
volume = {25},
number = {11},
year = {1992},
pages = {2903-6},
abstract = {Small-angle neutron scattering of high-mol.-wt. (1.95 x 106) polystyrene in dioctyl phthalate solns. was measured at low concn. (3\% wt. fraction) under steady shear with rates ranging from the quiescent condition (0 s-1) to 1100 s-1 at room temp. (22.degree.). The scattered intensity increased dramatically beyond a characteristic shear rate (.gamma.c = 57 s-1) similar to the increase following a temp. drop from the one-phase region (ambient temp.) to the two-phase region in this upper crit. soln. temp. system. The RPA approach (the Zimm inverse scattering formula) was used along with a swollen radius of gyration in the Debye function to analyze the data and ext. a statistical segment length b and a polymer-solvent interaction parameter .CHI.ps. The segment length increased slightly, indicating a slight increase in chain vol. beyond .gamma.c, while the interaction parameter showed a dramatic increase up to the spinodal value .gamma.s = 280 s-1 where the RPA breaks down, therefore giving nonreliable values.},
author = {Hammouda, B. and Nakatani, A. I. and Waldow, Dean and Han, C. C.}
}