SYMMETRIC DIBLOCK COPOLYMERS UNDER LARGE AMPLITUDE OSCILLATORY SHEAR FLOW : DUAL FREQUENCY EXPERIMENTS
作者： Yuanming Zhang , Ulrich Wiesner
DOI: 10.1063/1.473795
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摘要: Conceptually new experiments are described in which the effects of superposition two large amplitude oscillatory shear components on morphology a lamellar PS-b-PI diblock copolymer low molecular weight close to TODT investigated. First results such dual frequency presented for coupling from lower and intermediate regimes I II viscosity leading parallel perpendicular orientation behavior, respectively, single experiments. The employed frequencies were separated by more than orders magnitude, rendering possible terms unimportant. Using two-dimensional small-angle x-ray scattering (2D-SAXS) measurements, it is shown that rim strain values mechanism completely governs behavior. In where applied component significantly reduced with respect component...
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