Separation method of responses from large scale motions and polymer chain motions are investigated for viscoelastic properties of symmetric poly(styrene-
b-2-vinylpyridine)s (SP) in the ordered state taking into account of the effects of flow history on the sample. Due to the almost same thermo-rheological properties of components, master curves of dynamic moduli for SP,
G*
SP are obtained and shown that the data well coincide with those of polystyrene homopolymers (hPS) at high frequency ω, while responses from large scale motions of lamellar structure, Δ
G*
grain are observed at low ω, which asymptote to Δ
G*
grain ∼ ω
0.5. After the pre-shear, magnitude of Δ
G*
grain became lower at the lower ω region. When the magnitude of
G*
SP are appropriately higher than Δ
G*
grain extended to higher ω, Δ
G*
grain and the responses of polymer chains, Δ
G*
chain, having Rouse like modes, are successfully obtained by subtraction, Δ
G*
chain =
G*
SP - Δ
G*
grain, irrespective of pre-shear. By combining thus obtained Δ
G*
grain, Δ
G*
chain, and the data for hPS, G*hPS at higher ω region,
G*
SP data can be well approximated in a whole frequency range of the measurement.
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