Abstract
Effects of adding a small amount of a block copolymer to polymer blends composed of the same constituent polymers as the block copolymer on the kinetics of later-stage spinodal decomposition (SD) were investigated by a time-resolved light scattering at three different temperatures in a deep quench condition. Changes in the scaled structure factors F(x)= q m (t;T,O) 3 I(x,t;T,O) with x= q/q m (t;T,O) as a function of the composition of the block copolymer O were analyzed at various temperatures T, where q m (t;T,O) appears. Itwas found that the scaled structure factor obtained for each blend was almost identical, independent of the amount of the block copolymer
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