Abstract
The dynamics of concentration fluctuation in concentrated aqueous solutions of a poly(hexaethylene glycol monomethacrylate-co-acrylic acid/allyl glycidyl ether) copolymer were studied by means of the timeresolved low angle laser light scattering (LALLS). Concentrated aqueous solutions in the range 30–55% w/w showed a lower critical solution temperature behaviour (LCST). A peak was observed in the scattered light profile with time,I(q,t), when a temperature jump above the coexistence curve was performed. The peak shifted to lowerq values with time in a logarithmic mode. Only at lowq values and very short times did the solutions obeyed Cahn's linear spinodal decomposition kinetics, subsequently slowing down.
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