For the P(2EHA-AA-VAc)/P(VDF-HFA)/THF ternary system, the phase separation process during solution casting was examined via Rayleigh scattering measurement. The scattered intensity of the scattering vector q at various times for the P(2EHA-AA-VAc)/P(VDF-HFA) 30/70 blend having a gradient domain morphology revealed that the gradient structure formed according to both spinodal decomposition (SD) and nucleation growth (NG) mechanisms.
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Kano et al. (1999) studied this question.
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